| #
fdafd315 |
| 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.
Remov
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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Revision tags: release/14.0.0 |
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| #
685dc743 |
| 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 |
| 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spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD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
spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD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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Revision tags: release/13.2.0, release/12.4.0, release/13.1.0, release/12.3.0, release/13.0.0, release/12.2.0, release/11.4.0, release/12.1.0, release/11.3.0, release/12.0.0, release/11.2.0 |
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| #
5b274055 |
| 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 |
| 07-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
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 |
| 19-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 |
| 15-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 |
| 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
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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