Re: [RFC PATCH -tip 2/2 v2] add a scripts for pagecache usage perprocess

[Keiichi KII]

Hello,

(02/01/10 03:17), Tom Zanussi wrote:
> Here's one way, using the tracepoint filters - it does make a big
> difference in this case.
> 
> Before (using the new -P option, which includes perf in the trace
> data):  
> 
> root@tropicana:~# perf record -c 1 -f -a -M -R -e filemap:add_to_page_cache -e filemap:find_get_page -e filemap:remove_from_page_cache -P sleep 5
> [ perf record: Woken up 0 times to write data ]
> [ perf record: Captured and wrote 71.201 MB perf.data (~3110815 samples) ]
> 
> After (filters out events generated by perf):
> 
> root@tropicana:~# perf record -c 1 -f -a -M -R -e filemap:add_to_page_cache -e filemap:find_get_page -e filemap:remove_from_page_cache sleep 5
> [ perf record: Woken up 1 times to write data ]
> [ perf record: Captured and wrote 0.309 MB perf.data (~13479 samples) ]

I tried your patch.
It works well for me. Thank you.

Keiichi
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