Hi, On Thu, Jun 3, 2010 at 2:23 PM, 袁立威 <xzfkil...@gmail.com> wrote: > Recently, I've been trying to use bts(branch trace store) in i7 with > libpfm4, it captures all control transfers which gives large overhead > and I try event filtering mechanism in i7. Following is how am I doing: > > Use rdmsrl to read MSR_LBR_SELECT(0x1c8), then set bits according to > Intel manual and write back using wrmsrl. > BTS and LBR are unrelated. MSR_LBR_SELECT filters LBR, not BTS.
There is not user level LBR support yet in perf_events. > Unfortunately, it doesn't work, still capture all control transfers. > > Can any body help? > > Thanks, > Liwei Yuan. > > ------------------------------------------------------------------------------ > ThinkGeek and WIRED's GeekDad team up for the Ultimate > GeekDad Father's Day Giveaway. ONE MASSIVE PRIZE to the > lucky parental unit. See the prize list and enter to win: > http://p.sf.net/sfu/thinkgeek-promo > _______________________________________________ > perfmon2-devel mailing list > perfmon2-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/perfmon2-devel > ------------------------------------------------------------------------------ ThinkGeek and WIRED's GeekDad team up for the Ultimate GeekDad Father's Day Giveaway. ONE MASSIVE PRIZE to the lucky parental unit. See the prize list and enter to win: http://p.sf.net/sfu/thinkgeek-promo _______________________________________________ perfmon2-devel mailing list perfmon2-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/perfmon2-devel
