Jiri Olsa 5a6ea81b8f perf stat record: Write stat events on record ... Writing stat events on 'perf stat record' at the time we read counter values from kernel. Committer note: After the patch: $ perf stat record usleep 1 Performance counter stats for 'usleep 1': 0.598006 task-clock (msec) # 0.484 CPUs utilized 1 context-switches # 0.002 M/sec 0 cpu-migrations # 0.000 K/sec 52 page-faults # 0.087 M/sec 882,744 cycles # 1.476 GHz 581,416 stalled-cycles-frontend # 65.86% frontend cycles idle <not supported> stalled-cycles-backend 636,479 instructions # 0.72 insns per cycle # 0.91 stalled cycles per insn 129,334 branches # 216.275 M/sec 7,512 branch-misses # 5.81% of all branches 0.001235157 seconds time elapsed $ oldperf evlist task-clock context-switches cpu-migrations page-faults cycles stalled-cycles-frontend stalled-cycles-backend instructions branches branch-misses $ oldperf report --stdio Error: The perf.data file has no samples! # To display the perf.data header info, please use --header/--header-only options. # $ perf report -D | grep PERF_RECORD 0x5b0 [0x28]: PERF_RECORD_THREAD_MAP nr: 1 thread: 5504 0x5d8 [0x12]: PERF_RECORD_CPU_MAP nr: 1 cpu: 65535 0x5ea [0x40]: PERF_RECORD_STAT_CONFIG 0x62a [0x30]: PERF_RECORD_STAT 0x65a [0x30]: PERF_RECORD_STAT 0x68a [0x30]: PERF_RECORD_STAT 0x6ba [0x30]: PERF_RECORD_STAT 0x6ea [0x30]: PERF_RECORD_STAT 0x71a [0x30]: PERF_RECORD_STAT 0x74a [0x30]: PERF_RECORD_STAT 0x77a [0x30]: PERF_RECORD_STAT 0x7aa [0x30]: PERF_RECORD_STAT -1 -1 0x7da [0x40]: PERF_RECORD_MMAP -1/0: [0xffffffff81000000(0x1f000000) @ 0xffffffff81000000]: x [kernel.kallsyms]_text $ Signed-off-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Kan Liang <kan.liang@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1446734469-11352-8-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>		2015-12-17 16:00:22 -03:00
..
arch	tools include: Add basic atomic.h implementation from the kernel sources	2015-05-08 16:11:05 -03:00
build	tools build: Fix feature Makefile issues with 'O='	2015-12-16 15:31:33 -03:00
cgroup
firewire
hv	tools: hv: add a python script lsvmbus to list VMBus devices	2015-08-05 11:44:29 -07:00
iio	iio: generic_buffer: be helpful about enabling channels	2015-08-16 10:51:26 +01:00
include	perf tools: Move strlcpy() from perf to tools/lib/string.c	2015-12-16 16:09:39 -03:00
laptop/freefall	Move freefall program from Documentation/ to tools/	2015-06-08 16:42:07 -06:00
lguest	tools/lguest: Clean up include dir	2015-08-26 06:12:35 +02:00
lib	tools subcmd: Rename subcmd header include guards	2015-12-17 14:27:14 -03:00
net	tools/net: Use include/uapi with __EXPORTED_HEADERS__	2015-11-15 17:24:33 -05:00
nfsd
perf	perf stat record: Write stat events on record	2015-12-17 16:00:22 -03:00
power	Merge branch 'pm-tools'	2015-11-16 22:57:02 +01:00
scripts
testing	nfit: Adjust for different _FIT and NFIT headers	2015-11-30 14:51:46 -08:00
thermal/tmon	tools/thermal: tmon: use pkg-config also for CFLAGS	2015-10-10 11:32:31 +08:00
time
usb	usb: patches for v4.4 merge window	2015-10-22 17:19:33 -07:00
virtio	tools/virtio: fix byteswap logic	2015-12-07 17:28:10 +02:00
vm	tools/vm/page-types.c: support KPF_IDLE	2015-11-20 16:17:32 -08:00
Makefile	tools: Fix selftests_install Makefile rule	2015-11-18 17:46:29 -03:00