linux/tools
Jiri Olsa f61ff6c06d perf session: Do not fail on processing out of order event
Linus reported perf report command being interrupted due to processing
of 'out of order' event, with following error:

  Timestamp below last timeslice flush
  0x5733a8 [0x28]: failed to process type: 3

I could reproduce the issue and in my case it was caused by one CPU
(mmap) being behind during record and userspace mmap reader seeing the
data after other CPUs data were already stored.

This is expected under some circumstances because we need to limit the
number of events that we queue for reordering when we receive a
PERF_RECORD_FINISHED_ROUND or when we force flush due to memory
pressure.

Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: Ingo Molnar <mingo@kernel.org>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Matt Fleming <matt.fleming@intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1417016371-30249-1-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2014-11-28 18:19:37 -03:00
..
cgroup
firewire
hv Tools: hv: fix file overwriting of hv_fcopy_daemon 2014-07-09 14:21:26 -07:00
include tools: add more endian.h macros 2014-09-26 11:03:01 +02:00
lguest
lib tools lib fd array: Allow associating an integer cookie with each entry 2014-09-25 16:46:55 -03:00
net tools: bpf_jit_disasm: increase image buffer size 2014-05-16 16:44:08 -04:00
nfsd
perf perf session: Do not fail on processing out of order event 2014-11-28 18:19:37 -03:00
power ACPICA: acpiexec: Do not put STDIN into raw mode unless it is a terminal. 2014-10-21 00:39:40 +02:00
scripts
testing Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2014-11-13 17:54:08 -08:00
thermal/tmon tmon: set umask to a reasonable value 2014-07-01 22:00:51 +08:00
time tools: add script to test udelay 2014-07-23 10:16:38 -07:00
usb Linux 3.17-rc5 2014-09-16 09:53:59 -05:00
virtio tools: Consolidate types.h 2014-05-01 21:22:39 +02:00
vm mm/balloon_compaction: add vmstat counters and kpageflags bit 2014-10-09 22:26:01 -04:00
Makefile tools/liblockdep: Build liblockdep from tools/Makefile 2014-05-08 13:34:45 -04:00