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5e3934b1 |
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24-Nov-2023 |
Warner Losh <imp@FreeBSD.org> |
usr.bin: Automated cleanup of cdefs and other formatting Apply the following automated changes to try to eliminate no-longer-needed sys/cdefs.h includes as well as now-empty blank lines in a row. Remove /^#if.*\n#endif.*\n#include\s+<sys/cdefs.h>.*\n/ Remove /\n+#include\s+<sys/cdefs.h>.*\n+#if.*\n#endif.*\n+/ Remove /\n+#if.*\n#endif.*\n+/ Remove /^#if.*\n#endif.*\n/ Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/types.h>/ Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/param.h>/ Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/capsicum.h>/ Sponsored by: Netflix
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#
bdcbfde3 |
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23-Nov-2023 |
Warner Losh <imp@FreeBSD.org> |
usr.bin: Remove ancient SCCS tags. Remove ancient SCCS tags from the tree, automated scripting, with two minor fixup to keep things compiling. All the common forms in the tree were removed with a perl script. Sponsored by: Netflix
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1d386b48 |
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16-Aug-2023 |
Warner Losh <imp@FreeBSD.org> |
Remove $FreeBSD$: one-line .c pattern Remove /^[\s*]*__FBSDID\("\$FreeBSD\$"\);?\s*\n/
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df57947f |
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18-Nov-2017 |
Pedro F. Giffuni <pfg@FreeBSD.org> |
spdx: initial adoption of licensing ID tags. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts. Special thanks to Wind River for providing access to "The Duke of Highlander" tool: an older (2014) run over FreeBSD tree was useful as a starting point. Initially, only tag files that use BSD 4-Clause "Original" license. RelNotes: yes Differential Revision: https://reviews.freebsd.org/D13133
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5dba303d |
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17-Nov-2016 |
Gleb Smirnoff <glebius@FreeBSD.org> |
Use bogus_page to properly reduce number of I/Os in sendfile(2). The new sendfile_swapin() loop works this way: - Find first invalid page in the request. - Do vm_pager_has_page() and get count of pages, that can be taken in single I/O. - Trim valid pages from the end of the request. - Cycle through the request and substitute to bogus_page all valid pages that are in the middle of the request. - After I/O launched (pager copies array of pages into buf(9), it is important to restore proper page pointers with help vm_page_lookup(). Count bogus pages used and report them in sendfile stats.
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2bab0c55 |
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08-Jan-2016 |
Gleb Smirnoff <glebius@FreeBSD.org> |
New sendfile(2) syscall. A joint effort of NGINX and Netflix from 2013 and up to now. The new sendfile is the code that Netflix uses to send their multiple tens of gigabits of data per second. The new implementation features asynchronous I/O, when I/O operations are launched, but not awaited to be complete. An explanation of why such behavior is beneficial compared to old one is going to be too long for a commit message, so we will skip it here. Additional features of new syscall are extra flags, which provide an application more control over data sent. The SF_NOCACHE flag tells kernel that data shouldn't be cached after it was sent. The SF_READAHEAD() macro allows to specify readahead size in pages. The new syscalls is a drop in replacement. No modifications are required to applications. One can take nginx binary for stable/10 and run it successfully on head. Although SF_NODISKIO lost its original sense, as now sendfile doesn't block, and now means something completely different (tm), using the new sendfile the old way is absolutely safe. Celebrates: Netflix global launch! Sponsored by: Nginx, Inc. Sponsored by: Netflix Relnotes: yes
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9eddb899 |
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10-Sep-2015 |
Mark Johnston <markj@FreeBSD.org> |
Use a common subroutine to fetch and zero protocol stats instead of duplicating roughly similar code for each protocol. MFC after: 2 weeks
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ade9ccfe |
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21-Feb-2015 |
Marcel Moolenaar <marcel@FreeBSD.org> |
Convert netstat to use libxo. Obtained from: Phil Shafer <phil@juniper.net> Ported to -current by: alfred@ (mostly), Kim Shrier Formatting: marcel@ Sponsored by: Juniper Networks, Inc.
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d35acb50 |
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15-Oct-2013 |
Gleb Smirnoff <glebius@FreeBSD.org> |
Remove obtained, but never used data. Found by: gcc
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05d1f5bc |
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15-Jul-2013 |
Andrey V. Elsukov <ae@FreeBSD.org> |
Introduce new structure sfstat for collecting sendfile's statistics and remove corresponding fields from struct mbstat. Use PCPU counters and SFSTAT_INC() macro for update these statistics. Discussed with: glebius
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504a74fa |
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24-Oct-2012 |
Alfred Perlstein <alfred@FreeBSD.org> |
Show the number of times we block waiting for mbufs. Machines can stall out because mbufs are low, however sometimes we won't see "requests denied", instead we see user land processes or kernel threads blocking waiting for mbufs because they set M_WAIT. These consumers do not see errors, only stalling. Unfortunately until now, netstat did not export this information so you could have experienced an mbuf shortage and have no way of seeing it unless you happen to run netstat at the exact time of the shortage and see "in use" = "max". By exporting the number of times processes are blocked, we can effectively see how often non-interrupt context threads are effectively "denied". MFC after: 2 weeks
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a7d5f7eb |
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19-Oct-2010 |
Jamie Gritton <jamie@FreeBSD.org> |
A new jail(8) with a configuration file, to replace the work currently done by /etc/rc.d/jail.
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fe0506d7 |
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09-Mar-2010 |
Marcel Moolenaar <marcel@FreeBSD.org> |
Create the altix project branch. The altix project will add support for the SGI Altix 350 to FreeBSD/ia64. The hardware used for porting is a two-module system, consisting of a base compute module and a CPU expansion module. SGI's NUMAFlex architecture can be an excellent platform to test CPU affinity and NUMA-aware features in FreeBSD.
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821df508 |
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12-Dec-2009 |
Xin LI <delphij@FreeBSD.org> |
Revert most part of 200420 as requested, as more review and polish is needed.
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6f2d3221 |
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11-Dec-2009 |
Xin LI <delphij@FreeBSD.org> |
Remove unneeded header includes from usr.bin/ except contributed code. Tested with: make universe
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d7f03759 |
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19-Oct-2008 |
Ulf Lilleengen <lulf@FreeBSD.org> |
- Import the HEAD csup code which is the basis for the cvsmode work.
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65475bc8 |
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02-Jan-2008 |
David E. O'Brien <obrien@FreeBSD.org> |
style(9) + kread is not a boolean, so check it as such + fix $FreeBSD$ Ids + denote copyrights with /*- + misc whitespace changes.
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feda1a43 |
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16-Jul-2007 |
John Baldwin <jhb@FreeBSD.org> |
Restore netstat -M functionality for most statistics on core dumps. In general, when support was added to netstat for fetching data using sysctl, no provision was left for fetching equivalent data from a core dump, and in fact, netstat would _always_ fetch data from the live kernel using sysctl even when -M was specified resulting in the user believing they were getting data from coredumps when they actually weren't. Some specific changes: - Add a global 'live' variable that is true if netstat is running against the live kernel and false if -M has been specified. - Stop abusing the sysctl flag in the protocol tables to hold the protocol number. Instead, the protocol is now its own field in the tables, and it is passed as a separate parameter to the PCB and stat routines rather than overloading the KVM offset parameter. - Don't run PCB or stats functions who don't have a namelist offset if we are being run against a crash dump (!live). - For the inet and unix PCB routines, we generate the same buffer from KVM that the sysctl usually generates complete with the header and trailer. - Don't run bpf stats for !live (before it would just silently always run live). - kread() no longer trashes memory when opening the buffer if there is an error on open and the passed in buffer is smaller than _POSIX2_LINE_MAX. - The multicast routing code doesn't fallback to kvm on live kernels if the sysctl fails. Keeping this made the code rather hairy, and netstat is already tied to the kernel ABI anyway (even when using sysctl's since things like xinpcb contain an inpcb) so any kernels this is run against that have the multicast routing stuff should have the sysctls. - Don't try to dig around in the kernel linker in the netgraph PCB routine for core dumps. Other notes: - sctp's PCB routine only works on live kernels, it looked rather complicated to generate all the same stuff via KVM. Someone can always add it later if desired though. - Fix the ipsec removal bug where N_xxx for IPSEC stats weren't renumbered. - Use sysctlbyname() everywhere rather than hardcoded mib values. MFC after: 1 week Approved by: re (rwatson)
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7b95a1eb |
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28-Jul-2006 |
Yaroslav Tykhiy <ytykhiy@gmail.com> |
Achieve WARNS=2 by using uintmax_t to pass around 64-bit quantities, including to printf(). Using uintmax_t is also robust to further extensions in both the C language and the bitwidth of kernel counters. Tested on: i386 amd64 ia64
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4b969aa5 |
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18-Feb-2006 |
Andre Oppermann <andre@FreeBSD.org> |
Improved description for packet zone statistics. Sponsored by: TCP/IP Optimization Fundraise 2005 MFC after: 3 days
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#
1434cbd6 |
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18-Feb-2006 |
Andre Oppermann <andre@FreeBSD.org> |
Print statistics on mbuf+clusters in packet zone. Sponsored by: TCP/IP Optimization Fundraise 2005 MFC after: 3 days
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#
2b22cf9c |
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18-Feb-2006 |
Andre Oppermann <andre@FreeBSD.org> |
Print statistics on jumbo mbuf clusters. Sponsored by: TCP/IP Optimization Fundraise 2005 MFC after: 3 days
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#
dd8dfa82 |
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11-Feb-2006 |
Robert Watson <rwatson@FreeBSD.org> |
Sort sfbuf allocation counters with other sfbuf information. MFC after: 3 days
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#
e446b850 |
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11-Feb-2006 |
Robert Watson <rwatson@FreeBSD.org> |
Un-#if 0 the printing of allocation failure counts for mbufs, clusters, and packets in netstat -m. MFC after: 3 days
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#
91978388 |
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28-Nov-2005 |
Robert Watson <rwatson@FreeBSD.org> |
Remove two lines of debugging output that accidentally snuck into the commit to fix up kvm support for netstat -m.
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#
d4426f28 |
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13-Nov-2005 |
Robert Watson <rwatson@FreeBSD.org> |
Modify netstat -mb to use libmemstat when accessing a core dump or live kernel memory and not using sysctl. Previously, libmemstat was used only for the live kernel via sysctl paths. This results in netstat output becoming both more consistent between core dumps and the live kernel, and also more information in the core dump case than previously (i.e., mbuf cache information). Statistics relating to sfbufs still rely on a kvm descriptor as they are not currently exposed via libmemstat. netstat -m operating on a core is still unable to print certain sfbuf stats available on the live kernel. MFC after: 1 week
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4f7ac59b |
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23-Jul-2005 |
Robert Watson <rwatson@FreeBSD.org> |
Since libmemstat(3) now supports its own error management mechanism, use that instead of trying to use errno, in order to produce a sensible error message. MFC after: 1 day
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#
c8e6b689 |
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18-Jul-2005 |
Robert Watson <rwatson@FreeBSD.org> |
Modify "netstat -mb" to use libmemstat(3) when acting on a live system, with a number of positive benefits: - Start using UMA(9) statistics for mbufs and clusters, which avoids using the mbuf allocator statistics which suffer from races under load on SMP. This should eliminate "negative" mbuf counts in netstat -mb. - We are now able to track cached (free) mbufs and clusters and count it towards memory allocated by the network stack. - We are now also able to track memory allocated to mbuf tags since libmemstat(3) can also query malloc(9). We don't print this except as part of the total (for now - #if 0). - We are now able to track mbuf/cluster/packet allocation failures, although they are not currently printed (#if 0). - Don't print out sfbuf statistics when running on a kernel core, as currently that code is able only to query sysctl for statistics. MFC after: 1 week
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#
6cc6f122 |
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26-Jul-2004 |
Philippe Charnier <charnier@FreeBSD.org> |
Add __FBSDID. Replace local variable sin by sockin to not conflict with sin(3). Use warnx() instead of warn() when error message is not of any interest. Add prototypes.
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#
099a0e58 |
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31-May-2004 |
Bosko Milekic <bmilekic@FreeBSD.org> |
Bring in mbuma to replace mballoc. mbuma is an Mbuf & Cluster allocator built on top of a number of extensions to the UMA framework, all included herein. Extensions to UMA worth noting: - Better layering between slab <-> zone caches; introduce Keg structure which splits off slab cache away from the zone structure and allows multiple zones to be stacked on top of a single Keg (single type of slab cache); perhaps we should look into defining a subset API on top of the Keg for special use by malloc(9), for example. - UMA_ZONE_REFCNT zones can now be added, and reference counters automagically allocated for them within the end of the associated slab structures. uma_find_refcnt() does a kextract to fetch the slab struct reference from the underlying page, and lookup the corresponding refcnt. mbuma things worth noting: - integrates mbuf & cluster allocations with extended UMA and provides caches for commonly-allocated items; defines several zones (two primary, one secondary) and two kegs. - change up certain code paths that always used to do: m_get() + m_clget() to instead just use m_getcl() and try to take advantage of the newly defined secondary Packet zone. - netstat(1) and systat(1) quickly hacked up to do basic stat reporting but additional stats work needs to be done once some other details within UMA have been taken care of and it becomes clearer to how stats will work within the modified framework. From the user perspective, one implication is that the NMBCLUSTERS compile-time option is no longer used. The maximum number of clusters is still capped off according to maxusers, but it can be made unlimited by setting the kern.ipc.nmbclusters boot-time tunable to zero. Work should be done to write an appropriate sysctl handler allowing dynamic tuning of kern.ipc.nmbclusters at runtime. Additional things worth noting/known issues (READ): - One report of 'ips' (ServeRAID) driver acting really slow in conjunction with mbuma. Need more data. Latest report is that ips is equally sucking with and without mbuma. - Giant leak in NFS code sometimes occurs, can't reproduce but currently analyzing; brueffer is able to reproduce but THIS IS NOT an mbuma-specific problem and currently occurs even WITHOUT mbuma. - Issues in network locking: there is at least one code path in the rip code where one or more locks are acquired and we end up in m_prepend() with M_WAITOK, which causes WITNESS to whine from within UMA. Current temporary solution: force all UMA allocations to be M_NOWAIT from within UMA for now to avoid deadlocks unless WITNESS is defined and we can determine with certainty that we're not holding any locks when we're M_WAITOK. - I've seen at least one weird socketbuffer empty-but- mbuf-still-attached panic. I don't believe this to be related to mbuma but please keep your eyes open, turn on debugging, and capture crash dumps. This change removes more code than it adds. A paper is available detailing the change and considering various performance issues, it was presented at BSDCan2004: http://www.unixdaemons.com/~bmilekic/netbuf_bmilekic.pdf Please read the paper for Future Work and implementation details, as well as credits. Testing and Debugging: rwatson, brueffer, Ketrien I. Saihr-Kesenchedra, ... Reviewed by: Lots of people (for different parts)
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00925a8e |
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11-Mar-2004 |
Bruce Evans <bde@FreeBSD.org> |
Fixed misspellings of 0 as NULL.
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#
9e53fb7d |
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29-Dec-2003 |
Bruce Evans <bde@FreeBSD.org> |
Use floating point instead of unsigned long longs in percentage calculations. Long longs should never be used, since they break compiling with C90 compilers and don't necessarily work any better than longs for avoiding overflow. Print percentages with another digit of precision since they can be small and this is easy to do now that the format is floating point. Restored some more of the old -m output: Print the percentage of allocated memory that is in use. This is the amount of memory in active mbufs and mbuf clusters relative to the total amount of memory soft-allocated for mbufs and mbuf clusters. Print the percentage of allocated memory that is wired (cached). The old mbuf allocator never freed memory so printing this value wasn't useful. A previous version of netstat for the new allocator printed the in-use amount as a percentage of the wired amount. Fixed some nearby style bugs (excessive parenthesization and a redundant return). Reviewed by: alfred
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6171a280 |
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28-Dec-2003 |
Mike Silbersack <silby@FreeBSD.org> |
Teach netstat about the new sendfile statistics.
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#
18258f6d |
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27-Dec-2003 |
Mike Silbersack <silby@FreeBSD.org> |
Clean up the style of the previous commit, and fix a few type mismatches as well. Suggested by: bde
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8db142fa |
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27-Dec-2003 |
Mike Silbersack <silby@FreeBSD.org> |
Teach netstat to read and display the new sfbuf statistics.
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#
1164d324 |
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26-Dec-2003 |
Alfred Perlstein <alfred@FreeBSD.org> |
Fix percentages by using long long to hold values for 'space', overflow was breaking a bunch of the stats, specifically the percentage displayed for wired memory. Fix the output for current/peak/max lines, I forgot to output the types. 161/320/51200 (current/peak/max): -to- 639/25696/51200 mbufs in use (current/peak/max):
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7a744a48 |
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23-Dec-2003 |
Alfred Perlstein <alfred@FreeBSD.org> |
I asked Bosko Milekic for help with 'peak' reporting, and he suggested using the old 'cached' value but reporting it as 'cached'. I've decided to report the 'cached' as 'peak', why? Well because it is the peak, the peak of what is actually allocated. 'cached' doesn't make sense to me as a user.
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#
dbe0253a |
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23-Dec-2003 |
Alfred Perlstein <alfred@FreeBSD.org> |
Restore old netstat -m output. A new flag '-c' can be used to ask for the cache stats.
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#
11583f6c |
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15-May-2003 |
Bosko Milekic <bmilekic@FreeBSD.org> |
Make the mb_alloc low-watermark sysctl-tunable read-only and make netstat(1) not display it for now because its effects are not yet completely implemented and we're about to cut 5.2-RELEASE. This is temporary. Approved by: re (scottl, rwatson)
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025b4be1 |
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19-Feb-2003 |
Bosko Milekic <bmilekic@FreeBSD.org> |
o Allow "buckets" in mb_alloc to be differently sized (according to compile-time constants). That is, a "bucket" now is not necessarily a page-worth of mbufs or clusters, but it is MBUF_BUCK_SZ, CLUS_BUCK_SZ worth of mbufs, clusters. o Rename {mbuf,clust}_limit to {mbuf,clust}_hiwm and introduce {mbuf,clust}_lowm, which currently has no effect but will be used to set the low watermarks. o Fix netstat so that it can deal with the differently-sized buckets and teach it about the low watermarks too. o Make sure the per-cpu stats for an absent CPU has mb_active set to 0, explicitly. o Get rid of the allocate refcounts from mbuf map mess. Instead, just malloc() the refcounts in one shot from mbuf_init() o Clean up / update comments in subr_mbuf.c
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a01e3379 |
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05-Sep-2002 |
David Malone <dwmalone@FreeBSD.org> |
Warns cleanups for netstat: 1) Include arpa/inet.h for ntohs. 2) Constness fixes. 3) Fix shadowing except for "sin" which shouldn't be in scope. 4) Remove register keyword. 5) Add missing initialsers to user defined structs. 5) Make prototype of netname6 globally visable. 6) Use right macros for printing syncache stats (even though entrie isn't a word).
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70a61707 |
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29-Sep-2001 |
Bosko Milekic <bmilekic@FreeBSD.org> |
Re-enable mbtypes statistics in the mbuf allocator. I disabled these when I changed the allocator bits. This implements per-CPU mbtypes stats by keeping net number of decrements/increments of a given mbtype per-CPU and then summing all of the per-CPU mbtypes to produce the total net number of allocated mbufs of the given mbtype. Counters are carefully balanced to avoid/prevent underflows/overflows. mbtypes stats are re-enabled with the idea that we may occasionally (although very rarely) observe slight inconsistencies in the stat reporting. Most of the time, we should be fine, though. Also make appropriate modifications to netstat(1) and systat(1) to do the necessary reporting. Submitted by: Jiangyi Liu <jyliu@163.net>
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a8a35cdd |
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31-Jul-2001 |
Bosko Milekic <bmilekic@FreeBSD.org> |
Add a "X KBytes of wired memory reserved" metric that represents approximately the amount of memory allocated from the mbuf maps and sitting in the mbuf allocator's cache containers, and display in parantheses the percentage of said memory that is actually in use at the given time `netstat -m' is executed. Suggested by: mjacob
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49f854f9 |
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26-Jul-2001 |
Bosko Milekic <bmilekic@FreeBSD.org> |
- Do not handle the per-CPU containers in mbuf code as though the cpuids were indices in a dense array. The cpuids are a sparse set and treat them as such, setting up containers only for CPUs activated during mb_init(). - Fix netstat(1) and systat(1) to treat the per-CPU stats area as a sparse map, in accordance with the above. This allows us to properly boot with certain CPUs disactivated. However, if we later decide to re-activate said CPUs, we will barf until we decide to implement CPU spinon/spinoff callback hooks to allow for said CPUs' per-CPU containers to get configured on their activation. Reported by: mjacob Partially (sys/ diffs) Submitted by: mjacob
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f70f5dd3 |
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23-Jun-2001 |
Bosko Milekic <bmilekic@FreeBSD.org> |
- Fix space allocation for mbstat structure - Make sure to try hw.ncpu if kern.smp.cpus doesn't exist (i.e. on UP) to get number of CPUs.
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08442f8a |
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22-Jun-2001 |
Bosko Milekic <bmilekic@FreeBSD.org> |
Introduce numerous SMP friendly changes to the mbuf allocator. Namely, introduce a modified allocation mechanism for mbufs and mbuf clusters; one which can scale under SMP and which offers the possibility of resource reclamation to be implemented in the future. Notable advantages: o Reduce contention for SMP by offering per-CPU pools and locks. o Better use of data cache due to per-CPU pools. o Much less code cache pollution due to excessively large allocation macros. o Framework for `grouping' objects from same page together so as to be able to possibly free wired-down pages back to the system if they are no longer needed by the network stacks. Additional things changed with this addition: - Moved some mbuf specific declarations and initializations from sys/conf/param.c into mbuf-specific code where they belong. - m_getclr() has been renamed to m_get_clrd() because the old name is really confusing. m_getclr() HAS been preserved though and is defined to the new name. No tree sweep has been done "to change the interface," as the old name will continue to be supported and is not depracated. The change was merely done because m_getclr() sounds too much like "m_get a cluster." - TEMPORARILY disabled mbtypes statistics displaying in netstat(1) and systat(1) (see TODO below). - Fixed systat(1) to display number of "free mbufs" based on new per-CPU stat structures. - Fixed netstat(1) to display new per-CPU stats based on sysctl-exported per-CPU stat structures. All infos are fetched via sysctl. TODO (in order of priority): - Re-enable mbtypes statistics in both netstat(1) and systat(1) after introducing an SMP friendly way to collect the mbtypes stats under the already introduced per-CPU locks (i.e. hopefully don't use atomic() - it seems too costly for a mere stat update, especially when other locks are already present). - Optionally have systat(1) display not only "total free mbufs" but also "total free mbufs per CPU pool." - Fix minor length-fetching issues in netstat(1) related to recently re-enabled option to read mbuf stats from a core file. - Move reference counters at least for mbuf clusters into an unused portion of the cluster itself, to save space and need to allocate a counter. - Look into introducing resource freeing possibly from a kproc. Reviewed by (in parts): jlemon, jake, silby, terry Tested by: jlemon (Intel & Alpha), mjacob (Intel & Alpha) Preliminary performance measurements: jlemon (and me, obviously) URL: http://people.freebsd.org/~bmilekic/mb_alloc/
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5e051718 |
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15-Jun-2001 |
Assar Westerlund <assar@FreeBSD.org> |
remove K&R support
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e9370a2e |
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15-Jun-2001 |
Assar Westerlund <assar@FreeBSD.org> |
revert removal of warning and K&R support Requested by: bde
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af7a0a2d |
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14-Jun-2001 |
Assar Westerlund <assar@FreeBSD.org> |
remove most of the warnings
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#
d15c5f56 |
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14-Jun-2001 |
Ruslan Ermilov <ru@FreeBSD.org> |
Restore -M -N support for -m. PR: 20808
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#
a01db679 |
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15-Oct-2000 |
Bosko Milekic <bmilekic@FreeBSD.org> |
Change the "in use" percentage metric to actually display a real "in use" percentage. In other words, show how much of mb_map is in use.
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#
a5c4836d |
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19-Aug-2000 |
David Malone <dwmalone@FreeBSD.org> |
Replace the mbuf external reference counting code with something that should be better. The old code counted references to mbuf clusters by using the offset of the cluster from the start of memory allocated for mbufs and clusters as an index into an array of chars, which did the reference counting. If the external storage was not a cluster then reference counting had to be done by the code using that external storage. NetBSD's system of linked lists of mbufs was cosidered, but Alfred felt it would have locking issues when the kernel was made more SMP friendly. The system implimented uses a pool of unions to track external storage. The union contains an int for counting the references and a pointer for forming a free list. The reference counts are incremented and decremented atomically and so should be SMP friendly. This system can track reference counts for any sort of external storage. Access to the reference counting stuff is now through macros defined in mbuf.h, so it should be easier to make changes to the system in the future. The possibility of storing the reference count in one of the referencing mbufs was considered, but was rejected 'cos it would often leave extra mbufs allocated. Storing the reference count in the cluster was also considered, but because the external storage may not be a cluster this isn't an option. The size of the pool of reference counters is available in the stats provided by "netstat -m". PR: 19866 Submitted by: Bosko Milekic <bmilekic@dsuper.net> Reviewed by: alfred (glanced at by others on -net)
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af0e6bcd |
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15-Jul-2000 |
Alfred Perlstein <alfred@FreeBSD.org> |
Make mbstat.m_mtypes seperate and viewable via sysctl, also expand the size from short to ulong Submitted by: Ian Dowse <iedowse@maths.tcd.ie> PR: kern/19809
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8266cbec |
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27-Dec-1999 |
Mike Smith <msmith@FreeBSD.org> |
Add display of maximum allowed mbuf count to match mbuf cluster count. Submitted by: Bosko Milekic <bmilekic@dsuper.net>
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#
c3aac50f |
|
27-Aug-1999 |
Peter Wemm <peter@FreeBSD.org> |
$Id$ -> $FreeBSD$
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#
bca92d96 |
|
17-Jan-1999 |
Ollivier Robert <roberto@FreeBSD.org> |
Fix "make world" breakage because MT_RTABLE was still referenced here.
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ed9ff6dd |
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23-Aug-1998 |
Gary Palmer <gpalmer@FreeBSD.org> |
Quick hack to allow netstat to compile once more: ifdef out MT_SOOPTS
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fb5a5a81 |
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18-Aug-1998 |
John Birrell <jb@FreeBSD.org> |
Change a variable from int to size_t.
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22694eba |
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06-Jul-1998 |
Bruce Evans <bde@FreeBSD.org> |
Fixed printf format errors.
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4f81ef50 |
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15-May-1998 |
Garrett Wollman <wollman@FreeBSD.org> |
mbuf, inet, and unix modules no longer read kvm.
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ca67f458 |
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23-Apr-1998 |
David Greenman <dg@FreeBSD.org> |
Output mbuf clusters as current/peak/max. Requires new kern.ipc.nmbclusters sysctl variable (previously committed).
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881377bc |
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10-Nov-1997 |
Andrey A. Chernov <ache@FreeBSD.org> |
Add (unsigned) cast to prevent overflow in % Submitted by: "Alex G. Bulushev" <bag@demos.su>
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5cc5ba1d |
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17-Aug-1997 |
Peter Wemm <peter@FreeBSD.org> |
Bandaid to make this compile.. These old mbuf types should probably be ripped out.
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5d422d6a |
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29-Jul-1997 |
Philippe Charnier <charnier@FreeBSD.org> |
Remove prog, unused variables. Cosmetic in usage string.
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13ae2e2d |
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24-Feb-1997 |
Garrett Wollman <wollman@FreeBSD.org> |
Use the new sysctl(3) interface to mbuf statistics rather than groveling about in kmem.
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2fde9bd6 |
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12-Feb-1997 |
Garrett Wollman <wollman@FreeBSD.org> |
When the mbuf code was changed to use a private allocator instead of the kernel malloc, netstat was never updated to reflect the fact that there are once again allocated-but-free mbufs, just as there are clusters, and so the information presented about how much memory was allocated to the network was bogus. Fixed.
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7d56c0ee |
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02-Jun-1996 |
Alexander Langer <alex@FreeBSD.org> |
Code cleanup: remove unused variables, use correct *printf format specifiers (some unsigned values were printed as signed, some longs were printed as ints), and place parentheses around assignments in if statements.
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c585f97c |
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23-Feb-1995 |
David Greenman <dg@FreeBSD.org> |
Changed "mapped pages in use" to "mbuf clusters in use".
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51e7d42c |
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23-Jan-1995 |
Garrett Wollman <wollman@FreeBSD.org> |
Don't print protocol-cloned routes by default (enabled by -a flag). Print non-zero expiration timers. Use err(3) for error reporting.
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9b50d902 |
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26-May-1994 |
Rodney W. Grimes <rgrimes@FreeBSD.org> |
BSD 4.4 Lite Usr.bin Sources
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