Re: [PATCH 0/8] perf tools: Various updates

Arnaldo Carvalho de Melo
2012-08-17T16:18:54Z

Em Thu, Aug 16, 2012 at 09:10:16PM +0200, Robert Richter escreveu:
> This patch set contains various perf tools updates. Most patches deal
> with event naming. If the event name is unknown it is named like the
> command line string of it. This is esp. valueable for pmu events like
> for AMD IBS:
>
> $ perf report | grep '^#.*event'
> # event : name = ibs_op/cnt_ctl=1/GH, type = 7, config = 0x80000, config1 = 0x0, config2 = 0x0, excl_usr = 0, excl_kern = 0, excl_host = 0, excl_guest = 0, precise_ip = 0, id = {
> # event : name = ibs_fetch/config=0/, type = 6, config = 0x0, config1 = 0x0, config2 = 0x0, excl_usr = 0, excl_kern = 0, excl_host = 0, excl_guest = 1, precise_ip = 0, id = { 57,
> # Samples: 20K of event 'ibs_op/cnt_ctl=1/GH'
> # Samples: 4K of event 'ibs_fetch/config=0/'

There is a command for that pipe sequence:

[root@sandy ~]# perf record -e cache-misses:u,cycles:k,instructions usleep 1
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.020 MB perf.data (~861 samples) ]
[root@sandy ~]# perf evlist
cache-misses:u
cycles:k
instructions
[root@sandy ~]# perf evlist -v
cache-misses:u: sample_freq=4000, config: 3, size: 96, sample_type: 327, read_format: 7, disabled: 1, inherit: 1, exclude_kernel: 1, exclude_hv: 1, mmap: 1, comm: 1, freq: 1, enable_on_exec: 1, sample_id_all: 1
cycles:k: sample_freq=4000, size: 96, sample_type: 327, read_format: 7, disabled: 1, inherit: 1, exclude_user: 1, exclude_hv: 1, freq: 1, enable_on_exec: 1, sample_id_all: 1
instructions: sample_freq=4000, config: 1, size: 96, sample_type: 327, read_format: 7, disabled: 1, inherit: 1, freq: 1, enable_on_exec: 1, sample_id_all: 1, exclude_guest: 1
[root@sandy ~]#

- Arnaldo