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  1. 30 5月, 2013 6 次提交
  3. 29 5月, 2013 11 次提交
  5. 28 5月, 2013 6 次提交
  7. 01 4月, 2013 3 次提交
  9. 18 3月, 2013 1 次提交
  11. 16 3月, 2013 4 次提交
  13. 14 3月, 2013 1 次提交
  15. 15 2月, 2013 3 次提交
  17. 07 2月, 2013 1 次提交
  19. 30 1月, 2013 2 次提交
    • P
      perf tools: Make numa benchmark optional · 79d824e3
      由 Peter Hurley 提交于 
      Commit "perf: Add 'perf bench numa mem'..." added a NUMA performance
benchmark to perf. Make this optional and test for required
dependencies.
Signed-off-by: NPeter Hurley <peter@hurleysoftware.com>
Acked-by: NIngo Molnar <mingo@kernel.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1359337882-21821-1-git-send-email-peter@hurleysoftware.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      79d824e3
    • I
      perf: Add 'perf bench numa mem' NUMA performance measurement suite · 1c13f3c9
      由 Ingo Molnar 提交于 
      Add a suite of NUMA performance benchmarks.

The goal was simulate the behavior and access patterns of real NUMA
workloads, via a wide range of parameters, so this tool goes well
beyond simple bzero() measurements that most NUMA micro-benchmarks use:

 - It processes the data and creates a chain of data dependencies,
   like a real workload would. Neither the compiler, nor the
   kernel (via KSM and other optimizations) nor the CPU can
   eliminate parts of the workload.

 - It randomizes the initial state and also randomizes the target
   addresses of the processing - it's not a simple forward scan
   of addresses.

 - It provides flexible options to set process, thread and memory
   relationship information: -G sets "global" memory shared between
   all test processes, -P sets "process" memory shared by all
   threads of a process and -T sets "thread" private memory.

 - There's a NUMA convergence monitoring and convergence latency
   measurement option via -c and -m.

 - Micro-sleeps and synchronization can be injected to provoke lock
   contention and scheduling, via the -u and -S options. This simulates
   IO and contention.

 - The -x option instructs the workload to 'perturb' itself artificially
   every N seconds, by moving to the first and last CPU of the system
   periodically. This way the stability of convergence equilibrium and
   the number of steps taken for the scheduler to reach equilibrium again
   can be measured.

 - The amount of work can be specified via the -l loop count, and/or
   via a -s seconds-timeout value.

 - CPU and node memory binding options, to test hard binding scenarios.
   THP can be turned on and off via madvise() calls.

 - Live reporting of convergence progress in an 'at glance' output format.
   Printing of convergence and deconvergence events.

The 'perf bench numa mem -a' option will start an array of about 30
individual tests that will each output such measurements:

 # Running  5x5-bw-thread, "perf bench numa mem -p 5 -t 5 -P 512 -s 20 -zZ0q --thp  1"
  5x5-bw-thread,                         20.276, secs,           runtime-max/thread
  5x5-bw-thread,                         20.004, secs,           runtime-min/thread
  5x5-bw-thread,                         20.155, secs,           runtime-avg/thread
  5x5-bw-thread,                          0.671, %,              spread-runtime/thread
  5x5-bw-thread,                         21.153, GB,             data/thread
  5x5-bw-thread,                        528.818, GB,             data-total
  5x5-bw-thread,                          0.959, nsecs,          runtime/byte/thread
  5x5-bw-thread,                          1.043, GB/sec,         thread-speed
  5x5-bw-thread,                         26.081, GB/sec,         total-speed

See the help text and the code for more details.

Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Hugh Dickins <hughd@google.com>
Signed-off-by: NIngo Molnar <mingo@kernel.org>
      1c13f3c9
  21. 25 1月, 2013 2 次提交
    • N
      perf tools: Do not include PERF-VERSION-FILE to Makefile · 3cecaa20
      由 Namhyung Kim 提交于 
      When make runs it tries to update the Makefile rules by reading all of
included Makefiles.  During the perf build it checks PERF-VERSION-FILE
to get the current version number.  But it triggers Makefile update so
that make runs again with the update Makefile and, in turn, users will
see duplicate CHK message on the second path.

Running make with -d option for debugging tells me this:

GNU Make 3.82
Built for x86_64-redhat-linux-gnu
Copyright (C) 2010  Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Reading makefiles...
Reading makefile `Makefile'...
Reading makefile `../scripts/Makefile.include' (search path) (no ~ expansion)...
Reading makefile `config/utilities.mak' (search path) (no ~ expansion)...
Reading makefile `PERF-VERSION-FILE' (search path) (don't care) (no ~ expansion)...
Reading makefile `config/feature-tests.mak' (search path) (don't care) (no ~ expansion)...
    CHK -fstack-protector-all
    CHK -Wstack-protector
    CHK -Wvolatile-register-var
...
Updating makefiles....
 Considering target file `PERF-VERSION-FILE'.
 Must remake target `PERF-VERSION-FILE'.
Invoking recipe from Makefile:52 to update target `PERF-VERSION-FILE'.
Putting child 0x14037a0 (PERF-VERSION-FILE) PID 31925 on the chain.
Live child 0x14037a0 (PERF-VERSION-FILE) PID 31925
PERF_VERSION = 3.8.rc3.gf751db6
Reaping winning child 0x14037a0 PID 31925
Removing child 0x14037a0 PID 31925 from chain.
 Successfully remade target file `PERF-VERSION-FILE'.
...
Re-executing[1]: make -d                       <------------ here
GNU Make 3.82
Built for x86_64-redhat-linux-gnu
Copyright (C) 2010  Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Reading makefiles...
Reading makefile `Makefile'...
Reading makefile `../scripts/Makefile.include' (search path) (no ~ expansion)...
Reading makefile `config/utilities.mak' (search path) (no ~ expansion)...
Reading makefile `PERF-VERSION-FILE' (search path) (don't care) (no ~ expansion)...
Reading makefile `config/feature-tests.mak' (search path) (don't care) (no ~ expansion)...
    CHK -fstack-protector-all
    CHK -Wstack-protector
    CHK -Wvolatile-register-var
...

Actually PERF-VERSION-FILE is used only for perf.c to #define
PERF_VERSION macro.  So make it like a C header file and include it
during compiling the perf.c file will remove the need of being
included into Makefile.  Hench no need to update the Makefile and no
CHK lines anymore.
Signed-off-by: NNamhyung Kim <namhyung@kernel.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1358337594-10916-1-git-send-email-namhyung@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      3cecaa20
    • N
      perf tools: Get rid of unused include of config.mak · 1aa3d178
      由 Namhyung Kim 提交于 
      These lines are came from GIT Makefile and never used for perf.

I found it from make -d output during working on previous patch.

Updating makefiles....
 Considering target file `arch/x86/Makefile'.
 No need to remake target `arch/x86/Makefile'.
 Considering target file `config.mak'.
  File `config.mak' does not exist.
 Must remake target `config.mak'.
 Failed to remake target file `config.mak'.
 Considering target file `config.mak.autogen'.
  File `config.mak.autogen' does not exist.
 Must remake target `config.mak.autogen'.
 Failed to remake target file `config.mak.autogen'.
Signed-off-by: NNamhyung Kim <namhyung@kernel.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1358337594-10916-2-git-send-email-namhyung@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      1aa3d178