Commit Graph

238 Commits

Author SHA1 Message Date
Matt Macy
a72a9036d3 libpmc: add missed (uintmax_t) casts 2018-06-07 03:19:21 +00:00
Matt Macy
f992dd4b5c pmc: convert native to jsonl and track TSC value of samples
- add '-j' options to filter to enable converting native pmc
  log format to json lines format to enable the use of scripts
  and external tooling

% pmc filter -j pmc.log pmc.jsonl

- Record the tsc value in sampling interrupts as opposed to
  recording nanotime when the sample is copied to a global log
  in hardclock - potentially many milliseconds later.

- At initialize record the tsc_freq and the time of day to give
  us an offset for translating the tsc values in callchain records
2018-06-07 02:03:22 +00:00
Matt Macy
1b000b505b libpmc: simplify lookup by idx 2018-06-07 00:55:17 +00:00
Matt Macy
b2ca2e50b9 hwpmc: add summary command and further metadata extensions
metadata changes:
- log pmc sample rate with pmcallocate
- log proc flags with thread / process logging
  to identify user vs kernel threads

fixes:
- use log cpuid to translate event id to event name

Implement rudimentary summary command to track sample
counts by thread and process name within a pmc log.

% make -j4 buildkernel >& /dev/null &
% sudo pmcstat -S unhalted_core_cycles -S llc-misses -O foo sleep 15
% pmc summary foo
cpu_clk_unhalted.thread_p_any:
        idle: 138108207162
        clang-6.0: 105336158004
        sh: 72340108510
        make: 8642012963
        kernel: 7754011631
longest_lat_cache.miss:
        clang-6.0: 87502625
        sh: 40901227
        make: 5500165
        kernel: 3300099
        awk: 2000060

%  pmc summary -f ~/foo
idx: 278 name: cpu_clk_unhalted.thread_p_any rate: 2000003
idle: 69054
clang-6.0: 52668
sh: 36170
make: 4321
kernel: 3877
hwpmc: proc(7445): 3319
awk: 1289
xargs: 357
rand_harvestq: 181
mtree: 102
intr: 53
zfskern: 31
usb: 7
pagedaemon: 4
ntpd: 3
syslogd: 1
acpi_thermal: 1
logger: 1
syncer: 1
snmptrapd: 1
sleep: 1
idx: 17 name: longest_lat_cache.miss rate: 100003
clang-6.0: 875
sh: 409
make: 55
kernel: 33
awk: 20
hwpmc: proc(7445): 14
xargs: 9
idle: 8
intr: 3
zfskern: 2
2018-06-06 02:48:09 +00:00
Matt Macy
ebfaf69cc0 hwpmc: log name->pid, name->tid mappings
By logging all threads and processes 'pmc filter'
can now filter on process or thread name, relieving
the user of the burden of determining which tid or
pid was which when the sample was taken.

% pmc filter -T if_io_tqg -P nginx pmc.log pmc-iflib.log

% pmc filter -x -T idle pmc.log pmc-noidle.log
2018-06-05 04:26:40 +00:00
Matt Macy
12193215c2 libpmc: improve arg checking 2018-06-04 21:17:46 +00:00
Matt Macy
ee62e0b419 libpmc / stat: use westmere supported counter 2018-06-04 21:17:42 +00:00
Matt Macy
ce6fc9d779 update pmc_pmu_idx_get_by_event signature for !x86 2018-06-04 05:04:40 +00:00
Matt Macy
bfb46e2ba8 pmc: add filter command
pmc filter allows the user to select event types, threads, and processes from
a sample.

% pmcstat -S unhalted_core_cycles -S llc-misses -S -S  resource_stalls.any -O pmc.log
% pmc filter -e llc-misses pmc.log pmc-llc-misses.log
% pmc filter -e unhalted_core_cycles -t 100339  pmc.log pmc-core-cycles.log
etc...
% pmcstat -R pmc-core-cycles.log -G pmc-core-cycles.stacks
2018-06-04 04:59:48 +00:00
Matt Macy
07d80fd8dc hwpmc: ABI fixes
- increase pmc cpuid field from 8 to 12 bits
- add cpuid version string to initialize entry in the log
  so that filter can identify which counter index an
  event name maps to
- GC unused config flags
- make fixed counter assignment more robust as well as the
  changes needed to be properly identified for filter
2018-06-04 02:05:48 +00:00
Matt Macy
fbf962e6bb libpmc: allow substring for list and add function for printing event details 2018-06-01 00:45:53 +00:00
Matt Macy
cfb0dfa3c2 libpmc: Intel doesn't require runtime counter table init 2018-06-01 00:45:48 +00:00
Matt Macy
96cbd26a24 libpmc/pmu: update aliases table 2018-06-01 00:45:43 +00:00
Matt Macy
e92a1350b5 hwpmc: remove unused pre-table driven bits for intel
Intel now provides comprehensive tables for all performance counters
and the various valid configuration permutations as text .json files.
Libpmc has been converted to use these and hwpmc_core has been greatly
simplified by moving to passthrough of the table values.

The one gotcha is that said tables don't support pentium pro and and pentium
IV. There's very few users of hwpmc on _amd64_ kernels on new hardware. It is
unlikely that anyone is doing low level optimization on 15 year old Intel
hardware. Nonetheless, if someone feels strongly enough to populate the
corresponding tables for p4 and ppro I will reinstate the files in to the
build.

Code for the K8 counters and !x86 architectures remains unchanged.
2018-05-31 22:41:07 +00:00
Matt Macy
7d1c2b74a0 libpmc/pmu: enable for i386 as well 2018-05-31 22:26:55 +00:00
Matt Macy
785dd70da8 libpmc: add pmu support for uncore events 2018-05-31 22:26:50 +00:00
Matt Macy
8ffdc5df52 libpmc: squelch valgrind warnings 2018-05-30 04:12:51 +00:00
Matt Macy
8b20f97570 libpmc: bring pmu_util closer in line with style(9) 2018-05-30 03:40:02 +00:00
Matt Macy
8bed125da7 libpmc: silence scan-build warnings 2018-05-29 21:02:13 +00:00
Eric van Gyzen
4f9b4ac4c2 pmc_annotate: adhere to the API
If the 'mode' parameter was invalid, pmc_annotate() would
return EINVAL instead of setting errno and returning -1.

Sponsored by:	Dell EMC
2018-05-29 20:30:46 +00:00
Matt Macy
1a32aa0ff7 libpmc: don't return -1 on success in pmc_allocate 2018-05-29 20:09:35 +00:00
Matt Macy
ed50b91880 libpmc: don't leak string in error case either
Reported by:	vangyzen@
2018-05-29 19:07:00 +00:00
Matt Macy
c53c63f67e libpmc: remove fixed counter diagnostic 2018-05-29 18:30:37 +00:00
Matt Macy
731ca83529 libpmc: free allocated string on return from pmc_allocate
Reported by:	Coverity
CID: 1391359
2018-05-29 18:26:12 +00:00
Matt Macy
a191ed2d9f libpmc: add support for using fixed function counters 2018-05-29 04:23:21 +00:00
Matt Macy
78beed2f81 libpmc: export names of counters for stat mode, make get_by_idx name consistent with others 2018-05-29 04:23:16 +00:00
Matt Macy
959826ca1b pmc(3)/hwpmc(4): update supported Intel processors to rely fully on the
vendor provided pmu-events tables and sundry cleanups.

The vendor pmu-events tables provide counter descriptions, default
sample rates, event, umask, and flag values for all the counter
configuration permutations. Using this gives us:

- much simpler kernel code for the MD component
- helpful long and short event descriptions
- simpler user code
- sample rates that won't overload the system

Update man page with newer sample types and remove unused sample type.
2018-05-26 19:29:19 +00:00
Matt Macy
5506ceb87f Revert r334242 "pmc(3)/hwpmc(4): update supported Intel processors to rely fully on the"
because of squash commit messages
2018-05-26 19:26:19 +00:00
Matt Macy
4928135658 pmc(3)/hwpmc(4): update supported Intel processors to rely fully on the
vendor provided pmu-events tables and sundry cleanups.

The vendor pmu-events tables provide counter descriptions, default
sample rates, event, umask, and flag values for all the counter
configuration permutations. Using this gives us:

- much simpler kernel code for the MD component
- helpful long and short event descriptions
- simpler user code
- sample rates that won't overload the system

Update man page with newer sample types and remove unused sample type.

Squashed commit of the following:

commit 4459d43eff815bec08ccc5533dbe5de846f03128
Author: Matt Macy <mmacy@mattmacy.io>
Date:   Sat May 26 00:06:31 2018 -0700

    libpmc: fix pmu function signatures for non amd64

commit a2cb8bbc586c65d41f9b291430a2261ec67b59fe
Author: Matt Macy <mmacy@mattmacy.io>
Date:   Fri May 25 22:38:11 2018 -0700

    pmcstat: fix indentation of usage

commit f686954b15ff56a833ac80404898977cb80a265b
Author: Matt Macy <mmacy@mattmacy.io>
Date:   Fri May 25 22:19:49 2018 -0700

    pmclog(3): add callchain and pmcallocatedyn, remove pcsample

commit 73e13a0d2e9498c81c150d14d022050cee7511bb
Author: Matt Macy <mmacy@mattmacy.io>
Date:   Fri May 25 22:19:00 2018 -0700

    pmclog.h: GC pcsample field

commit 3e93ffd65da641fa657539dad3c48e281f8b5798
Author: Matt Macy <mmacy@mattmacy.io>
Date:   Fri May 25 22:05:57 2018 -0700

    hwpmc: make Intel core CPUs use external event tables

commit 634f5fae1e1644ac324003136c66cd9c619d1c93
Author: Matt Macy <mmacy@mattmacy.io>
Date:   Fri May 25 22:00:06 2018 -0700

    pmclog: update log record types, bump PMC_MAJOR
    - explicitly make log record types a multiple of 8 bytes
    - hook in pmu event types for pmc_allocate records
    - remove references to no longer PCSAMPLE record

commit 83d84fcd2d65bdf6ddcb2e155a22f0cfa2a9c225
Author: Matt Macy <mmacy@mattmacy.io>
Date:   Fri May 25 21:52:10 2018 -0700

    libpmc: add support for having vendor table driven pmc_allocate

commit 9e6ad63c40c2fce8404847ace5078ca6cb33a736
Author: Matt Macy <mmacy@mattmacy.io>
Date:   Fri May 25 19:11:33 2018 -0700

    hwpmc_core: add accessors for EVSEL & UMASK, make IAP_UMASK useful to user

commit 859dceb93daa6419a48c794db99b6758e5b041c9
Author: Matt Macy <mmacy@mattmacy.io>
Date:   Fri May 25 19:09:45 2018 -0700

    pmcstat: update usage and man page as well as make -L consistent with pmccontrol

commit 79c7d8597e28c2eb13f5f9113e65ec2792ca57b1
Author: Matt Macy <mmacy@mattmacy.io>
Date:   Fri May 25 18:07:03 2018 -0700

    pmu_util: add support for all current intel event keywords

commit d8089c7f6a6c8527f38324252b1ffb47004694c6
Author: Matt Macy <mmacy@mattmacy.io>
Date:   Fri May 25 17:45:00 2018 -0700

    add description for new arguments

commit 058336740bab53c62ec88a3a026ea848cf3878c6
Author: Matt Macy <mmacy@mattmacy.io>
Date:   Fri May 25 17:38:15 2018 -0700

    libpmc: move pmu_events table and pmu_utils out of libpmcstat so that they can be used by pmc_allocate

commit 049b66b382e2f833c3f47bc8df9e750cb265709f
Author: Matt Macy <mmacy@mattmacy.io>
Date:   Fri May 25 16:12:41 2018 -0700

    pmcstat: hook pmu_events counter description utility routines in

commit f5e01e7b37a691dc045e1aa16b3ebdd162515de8
Author: Matt Macy <mmacy@mattmacy.io>
Date:   Fri May 25 16:11:59 2018 -0700

    pmu_events: add utility routines for listing counters and their descriptions

commit cba4d4f8907f772279f86f18f915e0d74d33ac56
Author: Matt Macy <mmacy@mattmacy.io>
Date:   Fri May 25 16:09:50 2018 -0700

    pmu-events: expand out skylake regex to simplify string matches
2018-05-26 18:12:50 +00:00
Matt Macy
0b5dc7f64f hwpmc: add thread id field to callchain and context switch records to allow filtering
on thread in post-processing.

To generate stacks for just ${THREADID}:

pmcstat -R ${PREFIX}.pmcstat -L ${THREADID} -z100 -G ${PREFIX}.stacks

Sponsored by:	Limelight Networks
2018-05-23 17:25:00 +00:00
Fabien Thomas
9f4f1d4d1f Fix pmcstat exit from kernel introduced by r325275.
pmcstat request for close will generate a close event.
This event will be in turn received by pmcstat to close the file.

Reviewed by:	kib
Tested by:	pho
MFC after:	1 week
Sponsored by: Stormshield
2018-01-17 16:41:22 +00:00
Justin Hibbits
b83aeb5c6b Replace the PMC class struct copy with an explicit memcpy()
This should be effectively a nop for all archs, but for some reason the codegen
difference on the PowerPC 970 is such that the struct assignment doesn't work
(unless a printf() using one of the elements in the copied struct follows it),
while the memcpy() succeeds.  On all archs the memcpy() should be expanded to an
inline copy, since the copy is bounded to ~16 bytes.

MFC after:	3 weeks
2018-01-13 04:53:04 +00:00
Pedro F. Giffuni
5e53a4f90f lib: further adoption of SPDX licensing ID tags.
Mainly focus on files that use BSD 2-Clause license, however the tool I
was using mis-identified many licenses so this was mostly a manual - error
prone - task.

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.
2017-11-26 02:00:33 +00:00
Bryan Drewery
ea825d0274 DIRDEPS_BUILD: Update dependencies.
Sponsored by:	Dell EMC Isilon
2017-10-31 00:07:04 +00:00
Konstantin Belousov
b99b705d9c Skylake server core PMC support for hwpmc(4).
Reviewed by:	emaste
Sponsored by:	The FreeBSD Foundation
Hardware provided by:	Intel
MFC after:	2 weeks
Differential revision:	https://reviews.freebsd.org/D12221
2017-09-06 17:19:48 +00:00
Konstantin Belousov
9491ba7593 Minor style changes to make forthcoming code stand out less.
Reviewed by:	emaste
Sponsored by:	The FreeBSD Foundation
MFC after:	2 weeks
X-Differential revision:	https://reviews.freebsd.org/D12221
2017-09-06 17:14:23 +00:00
Edward Tomasz Napierala
a9a393b390 Don't end up manpage titles with a full stop.
MFC after:	2 weeks
2017-05-24 21:02:53 +00:00
Enji Cooper
79a9c323e0 pmc_read(3): fix manlint error
Remove spurious trailing comma from last .Nm entry in NAME section.

MFC after:	2 months
Sponsored by:	Dell EMC Isilon
2017-04-07 06:06:55 +00:00
Enji Cooper
15cfc11d85 pmc.atomsilvermont(3): fix manlint warnings
Start new sentences on new lines.

Sentences affected by the change are wrapped at <80 columns. Other
potentially offending lines have been left alone to reduce churn.

MFC after:	2 months
Sponsored by:	Dell EMC Isilon
2017-04-07 06:00:19 +00:00
Enji Cooper
7a40330b95 pmc(3): add additional references for libpmc functions in the SEE ALSO section
These functions are already referenced throughout the manpage -- this makes their
presence more apparent.

MFC after:	2 months
Sponsored by:	Dell EMC Isilon
2017-04-07 05:46:45 +00:00
Edward Tomasz Napierala
ab38e32db6 Fix typo.
MFC after:	2 weeks
Sponsored by:	DARPA, AFRL
2017-04-03 20:35:17 +00:00
Pedro F. Giffuni
75f46cf6c8 lib: minor spelling fixes in comments.
No functional change.
2016-05-01 19:37:33 +00:00
Glen Barber
52259a98ad MFH
Sponsored by:	The FreeBSD Foundation
2016-03-02 16:14:46 +00:00
Edward Tomasz Napierala
aa5f002475 Connect pmc.haswellxeon(3) to the build; looks like it was missed in r279829.
MFC after:	1 month
Sponsored by:	The FreeBSD Foundation
2016-03-01 11:34:44 +00:00
Glen Barber
a70cba9582 First pass through library packaging.
Sponsored by:	The FreeBSD Foundation
2016-02-04 21:16:35 +00:00
Randall Stewart
f19bae413c Add support for Intel Skylake and Intel Broadwell PMC's. The Broadwell PMC's have been
tested on the Broadwell-Xeon with a hacked up version of pmcstudy -T. I still need
to circle back and add in to pmcstudy all the new tests from the Broadwell Vtune
guide (for the hacked up version I just made it so I could run the -T option). The
Skylake CPU is not yet available (even though Intel is advertising it .. imagine that).
The Skylake PMC's will need to be tested once we can get a sample skylake CPU :-)

Sponsored by: Netflix Inc.
2015-11-30 17:35:49 +00:00
Bryan Drewery
7b3ea376a2 META MODE: Prefer INSTALL=tools/install.sh to lessen the need for xinstall.host.
This both avoids some dependencies on xinstall.host and allows
bootstrapping on older releases to work due to lack of at least 'install -l'
support.

Sponsored by:	EMC / Isilon Storage Division
2015-11-25 19:10:28 +00:00
Jonathan T. Looney
e64ba55dd2 Change the driver stats to what they really are: unsigned values.
When pmcstat exits after some samples were dropped, give the user an
idea of how many were lost. (Granted, these are global numbers, but
they may still help quantify the scope of the loss.)

Differential Revision:	https://reviews.freebsd.org/D4123
Approved by:	gnn (mentor)
MFC after:	1 month
Sponsored by:	Juniper Networks
2015-11-16 15:16:09 +00:00
Bjoern A. Zeeb
3ed01392b6 For the Cortex-A8 use the a8 and not the a9 events table.
MFC after:		2 weeks
Sponsored by:		DARPA/AFRL
Differential Revision:	https://reviews.freebsd.org/D3882
2015-10-14 16:56:25 +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