Commit Graph

215 Commits

Author SHA1 Message Date
Ian Lepore
336ab722d2 Describe the value in the 're' column of vmstat(8) in terms of freebsd's vm
implementation.  The old description was left over from the 4.4 BSD Lite
import in 1994, and was a bit misleading (not all arches use simulated
reference bits, some implement reference tracking in hardware).
2020-07-26 18:33:29 +00:00
Ian Lepore
e9c003e51a Remove commented-out lines describing the old never-implemented -t option.
In 2018, r338094 removed the commented-out code for supporting the -t
command line option which had been present since the BSD 4.4 Lite import,
but was never implemented for freebsd.

This does the same for the man page.
2020-07-26 17:50:39 +00:00
Gordon Bergling
1d733bbc0d Add HISTORY sections to banner(6), basename(1), limits(1) and vmstat(8)
Reviewed by:	bcr (mentor)
Approved by:	bcr (mentor)
MFC after:	7 days
Differential Revision:	https://reviews.freebsd.org/D25019
2020-06-18 13:19:56 +00:00
Edward Tomasz Napierala
dc04811c2c Move type casts into a single place. No functional changes.
MFC after:	2 weeks
2019-12-29 12:24:41 +00:00
Edward Tomasz Napierala
75ad2fd059 Humanize more columns in the vmstat(8) output and adjust widths.
The few columns that are not humanized are usually 0.  This makes
the output mostly aligned.

Reviewed by:	allanjude
MFC after:	2 weeks
Differential Revision:	https://reviews.freebsd.org/D22185
2019-11-08 11:09:50 +00:00
Edward Tomasz Napierala
5a84f74f5b Fix column title alignment.
MFC after:	2 weeks
2019-10-29 20:28:02 +00:00
Jeff Roberson
c168508655 Add two new kernel options to control memory locality on NUMA hardware.
- UMA_XDOMAIN enables an additional per-cpu bucket for freed memory that
   was freed on a different domain from where it was allocated.  This is
   only used for UMA_ZONE_NUMA (first-touch) zones.
 - UMA_FIRSTTOUCH sets the default UMA policy to be first-touch for all
   zones.  This tries to maintain locality for kernel memory.

Reviewed by:	gallatin, alc, kib
Tested by:	pho, gallatin
Sponsored by:	Netflix
Differential Revision:	https://reviews.freebsd.org/D20929
2019-08-06 21:50:34 +00:00
Mark Johnston
54a3a11421 Provide separate accounting for user-wired pages.
Historically we have not distinguished between kernel wirings and user
wirings for accounting purposes.  User wirings (via mlock(2)) were
subject to a global limit on the number of wired pages, so if large
swaths of physical memory were wired by the kernel, as happens with
the ZFS ARC among other things, the limit could be exceeded, causing
user wirings to fail.

The change adds a new counter, v_user_wire_count, which counts the
number of virtual pages wired by user processes via mlock(2) and
mlockall(2).  Only user-wired pages are subject to the system-wide
limit which helps provide some safety against deadlocks.  In
particular, while sources of kernel wirings typically support some
backpressure mechanism, there is no way to reclaim user-wired pages
shorting of killing the wiring process.  The limit is exported as
vm.max_user_wired, renamed from vm.max_wired, and changed from u_int
to u_long.

The choice to count virtual user-wired pages rather than physical
pages was done for simplicity.  There are mechanisms that can cause
user-wired mappings to be destroyed while maintaining a wiring of
the backing physical page; these make it difficult to accurately
track user wirings at the physical page layer.

The change also closes some holes which allowed user wirings to succeed
even when they would cause the system limit to be exceeded.  For
instance, mmap() may now fail with ENOMEM in a process that has called
mlockall(MCL_FUTURE) if the new mapping would cause the user wiring
limit to be exceeded.

Note that bhyve -S is subject to the user wiring limit, which defaults
to 1/3 of physical RAM.  Users that wish to exceed the limit must tune
vm.max_user_wired.

Reviewed by:	kib, ngie (mlock() test changes)
Tested by:	pho (earlier version)
MFC after:	45 days
Sponsored by:	Netflix
Differential Revision:	https://reviews.freebsd.org/D19908
2019-05-13 16:38:48 +00:00
John Baldwin
fd036deac1 Dynamically allocate IRQ ranges on x86.
Previously, x86 used static ranges of IRQ values for different types
of I/O interrupts.  Interrupt pins on I/O APICs and 8259A PICs used
IRQ values from 0 to 254.  MSI interrupts used a compile-time-defined
range starting at 256, and Xen event channels used a
compile-time-defined range after MSI.  Some recent systems have more
than 255 I/O APIC interrupt pins which resulted in those IRQ values
overflowing into the MSI range triggering an assertion failure.

Replace statically assigned ranges with dynamic ranges.  Do a single
pass computing the sizes of the IRQ ranges (PICs, MSI, Xen) to
determine the total number of IRQs required.  Allocate the interrupt
source and interrupt count arrays dynamically once this pass has
completed.  To minimize runtime complexity these arrays are only sized
once during bootup.  The PIC range is determined by the PICs present
in the system.  The MSI and Xen ranges continue to use a fixed size,
though this does make it possible to turn the MSI range size into a
tunable in the future.

As a result, various places are updated to use dynamic limits instead
of constants.  In addition, the vmstat(8) utility has been taught to
understand that some kernels may treat 'intrcnt' and 'intrnames' as
pointers rather than arrays when extracting interrupt stats from a
crashdump.  This is determined by the presence (vs absence) of a
global 'nintrcnt' symbol.

This change reverts r189404 which worked around a buggy BIOS which
enumerated an I/O APIC twice (using the same memory mapped address for
both entries but using an IRQ base of 256 for one entry and a valid
IRQ base for the second entry).  Making the "base" of MSI IRQ values
dynamic avoids the panic that r189404 worked around, and there may now
be valid I/O APICs with an IRQ base above 256 which this workaround
would incorrectly skip.

If in the future the issue reported in PR 130483 reoccurs, we will
have to add a pass over the I/O APIC entries in the MADT to detect
duplicates using the memory mapped address and use some strategy to
choose the "correct" one.

While here, reserve room in intrcnts for the Hyper-V counters.

PR:		229429, 130483
Reviewed by:	kib, royger, cem
Tested by:	royger (Xen), kib (DMAR)
Approved by:	re (gjb)
MFC after:	2 weeks
Differential Revision:	https://reviews.freebsd.org/D16861
2018-08-28 21:09:19 +00:00
John Baldwin
7b87f99aa8 Fully retire the unimplemented -t option from vmstat(8).
It was #ifdef'd out in the 4.4BSD import and hasn't been re-enabled
since then.

Reviewed by:	kib
MFC after:	2 weeks
Differential Revision:	https://reviews.freebsd.org/D16804
2018-08-20 09:29:21 +00:00
Eitan Adler
baab2cf821 vmstat(1): various nits
Continue my parade on introspection tools by fixing:
- failed to check for null after reallocf
- avoid the comma operator
- mark usage as dead
- correct size of len
2018-06-13 08:52:04 +00:00
Justin Hibbits
fb3d972447 Temporarily widen count for interrupt rate calculations on 32-bit archs
If the interrupt count is very high (greater than ~42M), notably on one-shot
execution on long running systems, the intermediate multiplication step in the
rate calculation will overflow the width of a 32-bit architecture long (32
bits), causing the rest of the calculation to calculate with a truncated value,
and report very low rates (sometimes 0).

MFC after:	2 weeks
2018-02-08 05:18:30 +00:00
John Baldwin
9a7a98a0dc Update various statements in vmstat(8) to match reality.
- The process stats are actually thread counts rather than process
  counts.
- Simplify various descriptions to remove mention of stats that are
  updated every 5 seconds (all VM related stats are now "instant",
  only the load average is updated every 5 seconds).
- Don't make any mention of special treatment for processes that have
  been active in the last 20 seconds.  We don't track that stat.
- Rework the description of active virtual memory.  Call it mapped
  virtual memory and explicitly point out it is not the same as the
  active page queue (which corresponds to "Active" in top(1)), and
  also hint at the possible bogusness of the value (e.g. if a process
  maps a single page out of a multiple GB file, the entire file's size
  is considered mapped).
- Simplify a few descriptions that implied their output was a value
  per interval.  All of the "rate" values are per-second rates scaled
  across the interval.
- Update a few comments for 'struct vmtotal' along similar lines.

Reported by:	mwlucas (indirectly)
Reviewed by:	kib
MFC after:	1 week
Differential Revision:	https://reviews.freebsd.org/D13905
2018-01-18 19:43:02 +00:00
Kyle Evans
12cea332f1 vmstat(8): Hook up NetBSD tests
The NetBSD tests for vmstat are basically just a smoke test, ensuring that
executing `vmstat` and `vmstat -s` exit successfully. This is more than we
test now, so go with it.
2018-01-11 16:04:04 +00:00
Mark Johnston
aea10f36da Re-add spaces lost in r326436.
X-MFC with:	r326436
2017-12-14 15:40:03 +00:00
Konstantin Belousov
b05a4a9db7 vmstat: fix style(9) violations and bump WARNS.
Based on the patch by:	Pawel Biernacki <pawel.biernacki@gmail.com>
Sponsored by:	Mysterious Code Ltd. (Pawel),
	  The FreeBSD Foundation (me)
MFC after:	1 week
Differential revision:	https://reviews.freebsd.org/D13228
2017-12-01 22:38:28 +00:00
Konstantin Belousov
72f406a92c vmstat: use 64-bit counters from struct vmtotal.
Consistently print counters using unsigned intmax type.

Submitted by:	Pawel Biernacki <pawel.biernacki@gmail.com>
Sponsored by:	Mysterious Code Ltd.
Differential revision:	https://reviews.freebsd.org/D13199
2017-11-23 19:10:09 +00:00
Konstantin Belousov
d5589c6c60 Use C standard spelling uint64_t for u_int64_t.
Submitted by:	Pawel Biernacki <pawel.biernacki@gmail.com>
Sponsored by:	Mysterious Code Ltd.
X-Differential revision:	https://reviews.freebsd.org/D13199
2017-11-23 19:06:44 +00:00
Pedro F. Giffuni
8a16b7a18f General further adoption of SPDX licensing ID tags.
Mainly focus on files that use BSD 3-Clause license.

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.
2017-11-20 19:49:47 +00:00
Allan Jude
125996b592 vmstat: fix duplicate key in libxo output
In the libxo output from vmstat, the number of pages that have been
paged out uses the same key name as the number of times pages have been
paged. Appears to have been a typo or copy-pasto.

PR:		222198
Submitted by:	Yavuz Tanriverdi <stemix@gmail.com>
Reviewed by:	phil, garga
Differential Revision:	https://reviews.freebsd.org/D12395
2017-11-11 14:02:21 +00:00
Bryan Drewery
ea825d0274 DIRDEPS_BUILD: Update dependencies.
Sponsored by:	Dell EMC Isilon
2017-10-31 00:07:04 +00:00
Emmanuel Vadot
d683d1a377 vmstat: Always emit a space after the free-memory column
When displaying in non-human form, if the free-memory number
is large (more than 7 digits), there is no space between it and
the page fault column.

PR:		221290
Submitted by:	Josuah Demangeon <mail@josuah.net> (Original version)
2017-08-08 12:18:11 +00:00
Mark Johnston
114e38325e Let vmstat -o recognize OBJT_MGTDEVICE objects.
MFC after:	1 week
2017-05-23 07:20:29 +00:00
Gleb Smirnoff
89aa578fde - When reading VM stats, provide proper size argument to sysctl.
- While here, remove unused arguments from mysysctl().
2017-04-21 00:00:23 +00:00
Gleb Smirnoff
83c9dea1ba - Remove 'struct vmmeter' from 'struct pcpu', leaving only global vmmeter
in place.  To do per-cpu stats, convert all fields that previously were
  maintained in the vmmeters that sit in pcpus to counter(9).
- Since some vmmeter stats may be touched at very early stages of boot,
  before we have set up UMA and we can do counter_u64_alloc(), provide an
  early counter mechanism:
  o Leave one spare uint64_t in struct pcpu, named pc_early_dummy_counter.
  o Point counter(9) fields of vmmeter to pcpu[0].pc_early_dummy_counter,
    so that at early stages of boot, before counters are allocated we already
    point to a counter that can be safely written to.
  o For sparc64 that required a whole dummy pcpu[MAXCPU] array.

Further related changes:
- Don't include vmmeter.h into pcpu.h.
- vm.stats.vm.v_swappgsout and vm.stats.vm.v_swappgsin changed to 64-bit,
  to match kernel representation.
- struct vmmeter hidden under _KERNEL, and only vmstat(1) is an exclusion.

This is based on benno@'s 4-year old patch:
https://lists.freebsd.org/pipermail/freebsd-arch/2013-July/014471.html

Reviewed by:	kib, gallatin, marius, lidl
Differential Revision:	https://reviews.freebsd.org/D10156
2017-04-17 17:34:47 +00:00
Marcelo Araujo
ee1acd865e Bring back the cast removed in my previous commit to allow us build vmstat
with WARNS 2. This cast was first introduced at r87690.

Reported by:	bde, pfg and ngie
MFC after:	3 weeks.
2017-03-11 04:36:15 +00:00
Marcelo Araujo
4e7ecee633 Use nitems() from sys/param.h and also remove the cast.
Reviewed by:	markj
MFC after:	3 weeks.
Differential Revision:	https://reviews.freebsd.org/D9937
2017-03-10 04:49:40 +00:00
Warner Losh
fbbd9655e5 Renumber copyright clause 4
Renumber cluase 4 to 3, per what everybody else did when BSD granted
them permission to remove clause 3. My insistance on keeping the same
numbering for legal reasons is too pedantic, so give up on that point.

Submitted by:	Jan Schaumann <jschauma@stevens.edu>
Pull Request:	https://github.com/freebsd/freebsd/pull/96
2017-02-28 23:42:47 +00:00
Mark Johnston
320ab9c026 Remove a lingering reference to cache pages from vmstat(8).
Reported by:	alc
2016-11-16 00:21:18 +00:00
Mark Johnston
cc59e3a79b Add the laundry page count to the displays of systat, top, and vmstat.
Reviewed by:	alc, kib
Differential Revision:	https://reviews.freebsd.org/D8467
2016-11-10 19:55:45 +00:00
Marcelo Araujo
ee03c16e64 Use MIN() macro from sys/param.h.
MFC after:	2 weeks.
2016-04-22 03:46:57 +00:00
Craig Rodrigues
77624aed80 Remove extraneous characters
Noticed by:     markj
Reviewed by:    allanjude
2015-12-23 07:28:48 +00:00
Allan Jude
3410663468 Some problems were introduced during the libxo-ification of vmstat, fix them
stop vmstat -i segfaulting
remove duplicate header from vmstat -i
do not pad the name of the interupt in encoded outputs
fix stray % and missing } in the header for vmstat -i
add outer container to vmstat -i
add missing xo_flush in vmstat -i (when run with an interval or delay)
add outer container to vmstat -m
do not pad the name of malloc areans
add outer container to vmstat -z
do not pad the name of memory zones

Reviewed by:	rodrigc
Approved by:	bapt (mentor)
Sponsored by:	ScaleEngine Inc.
Differential Revision:	https://reviews.freebsd.org/D4263
2015-12-01 16:31:07 +00:00
Bryan Drewery
cf990407e1 Update dependencies after r291406 added libelf to libkvm.
Unfortunately filemon/meta mode tracks all indirect dependencies here
since ld(1) is reading libelf when linking in libkvm.  Churn would be
reduced if this was able to be limited to direct dependencies.

Sponsored by:	EMC / Isilon Storage Division
2015-12-01 05:18:48 +00:00
Mark Johnston
f226507c00 Add a missing brace to fix vmstat -s output. 2015-11-21 23:04:12 +00:00
Craig Rodrigues
0e51ea9106 Convert vmstat to use libxo.
This patch was based on this patch:
https://github.com/Juniper/libxo/blob/master/patches/vmstat.patch

by Phil Shafer at Juniper Networks, but updated to the latest
vmstat code.

Reviewed by:           allanjude
Differential Revision: https://reviews.freebsd.org/D3935
2015-11-20 05:15:34 +00:00
Mark Johnston
d73ce4c698 Remove the v_cache_min and v_cache_max sysctls. They are unused and have
no effect.

Reviewed by:	alc
Sponsored by:	EMC / Isilon Storage Division
2015-09-11 03:00:20 +00:00
Simon J. Gerraty
ccfb965433 Add META_MODE support.
Off by default, build behaves normally.
WITH_META_MODE we get auto objdir creation, the ability to
start build from anywhere in the tree.

Still need to add real targets under targets/ to build packages.

Differential Revision:       D2796
Reviewed by: brooks imp
2015-06-13 19:20:56 +00:00
Simon J. Gerraty
44d314f704 dirdeps.mk now sets DEP_RELDIR 2015-06-08 23:35:17 +00:00
John Baldwin
696bb6cedf Trim spurious colon. 2015-05-27 19:49:33 +00:00
John Baldwin
ff87ae350e Export a list of VM objects in the system via a sysctl. The list can be
examined via 'vmstat -o'.  It can be used to determine which files are
using physical pages of memory and how much each is using.

Differential Revision:	https://reviews.freebsd.org/D2277
Reviewed by:	alc, kib
MFC after:	2 weeks
Sponsored by:	Norse Corp, Inc. (forward porting to HEAD/10)
2015-05-27 18:11:05 +00:00
Simon J. Gerraty
98e0ffaefb Merge sync of head 2015-05-27 01:19:58 +00:00
Will Andrews
d0fde85e65 Use clock_gettime to measure the time that we spent asleep during
"vmstat -i" instead of assuming it's what we asked for.

Submitted by:	asomers
MFC after:	1 week
Sponsored by:	Spectra Logic
MFSpectraBSD:	1066751 on 2014/06/04
2015-01-23 16:21:31 +00:00
Will Andrews
157b158ea9 Use CLOCK_UPTIME to get the uptime instead of CLOCK_MONOTONIC.
Submitted by:	asomers
MFC after:	1 week
Sponsored by:	Spectra Logic
MFSpectraBSD:	1066740 on 2014/06/04
2015-01-23 16:18:39 +00:00
Will Andrews
961a5dae5c Make "vmstat -i" respect the -c <count> and -i <interval> options together.
Submitted by:	asomers
MFC after:	1 week
Sponsored by:	Spectra Logic
MFSpectraBSD:	1066735 on 2014/06/04
2015-01-23 16:15:55 +00:00
Baptiste Daroussin
3e11bd9e2a Convert to usr.bin/ to LIBADD
Reduce overlinking
2014-11-25 14:29:10 +00:00
Simon J. Gerraty
9268022b74 Merge from head@274682 2014-11-19 01:07:58 +00:00
Kirk McKusick
24244db06b Replace update from -r271410 accidentally lost in -r273575. 2014-10-26 20:48:26 +00:00
Kirk McKusick
bcc63e8586 Fix formatting of vmstat (1) so that it looks cleaner on standard 80
column displays. In particular it wraps far less often.

Submitted by: Andy Kosela <akosela@andykosela.com>
PR:           191976
2014-10-24 04:01:14 +00:00
Hiroki Sato
83a15ccf22 Fix header output when -P is specified and (ncpus - 1) != maxid.
Reported by:	Hiroaki Shimizu
PR:		152738
2014-09-10 22:34:08 +00:00