[PATCH 13/32] perf callchain: Use global caching provided by libunwind

2014-10-28 Thread Arnaldo Carvalho de Melo
From: Namhyung Kim The libunwind provides two caching policy which are global and per-thread. As perf unwinds callchains in a single thread, it'd sufficient to use global caching. This speeds up my perf report from 14s to 7s on a ~260MB data file. Although the output sometimes contains a

[PATCH 13/32] perf callchain: Use global caching provided by libunwind

2014-10-28 Thread Arnaldo Carvalho de Melo
From: Namhyung Kim namhy...@kernel.org The libunwind provides two caching policy which are global and per-thread. As perf unwinds callchains in a single thread, it'd sufficient to use global caching. This speeds up my perf report from 14s to 7s on a ~260MB data file. Although the output