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fdafd315 |
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24-Nov-2023 |
Warner Losh <imp@FreeBSD.org> |
sys: 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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685dc743 |
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16-Aug-2023 |
Warner Losh <imp@FreeBSD.org> |
sys: Remove $FreeBSD$: one-line .c pattern Remove /^[\s*]*__FBSDID\("\$FreeBSD\$"\);?\s*\n/
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4d846d26 |
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10-May-2023 |
Warner Losh <imp@FreeBSD.org> |
spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD The SPDX folks have obsoleted the BSD-2-Clause-FreeBSD identifier. Catch up to that fact and revert to their recommended match of BSD-2-Clause. Discussed with: pfg MFC After: 3 days Sponsored by: Netflix
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5b274055 |
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07-Jun-2018 |
Alan Cox <alc@FreeBSD.org> |
When pidctrl_daemon() is called multiple times within an interval, it should use the cumulative error to calculate the output.
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e768070c |
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06-Jun-2018 |
Alan Cox <alc@FreeBSD.org> |
pidctrl_daemon() implements a variation on the classical, discrete PID controller that tries to handle early invocations of the controller, in other words, invocations before the expected end of the interval. However, there were some calculation errors in this early invocation case. Notably, if an early invocation occurred while the error was negative, the derivative term was off by a large amount. One visible effect of this error was that processes were being killed by the virtual memory system's OOM killer when in fact there was plentiful free memory. Correct a couple minor errors in the sysctl descriptions, and apply some style fixes. Reviewed by: jeff, markj
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ae6be8e6 |
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18-May-2018 |
Matt Macy <mmacy@FreeBSD.org> |
pidctrl Actually use the variables that we assign to as seatbelts to prevent divide by zero Reviewed by: jeffr
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ea0939f0 |
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14-May-2018 |
Ed Maste <emaste@FreeBSD.org> |
subr_pidctrl: use standard 2-Clause FreeBSD license and disclaimer Approved by: jeff
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5f8cd1c0 |
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23-Feb-2018 |
Jeff Roberson <jeff@FreeBSD.org> |
Add a generic Proportional Integral Derivative (PID) controller algorithm and use it to regulate page daemon output. This provides much smoother and more responsive page daemon output, anticipating demand and avoiding pageout stalls by increasing the number of pages to match the workload. This is a reimplementation of work done by myself and mlaier at Isilon. Reviewed by: bsdimp Tested by: pho Sponsored by: Netflix, Dell/EMC Isilon Differential Revision: https://reviews.freebsd.org/D14402
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