Date: Fri, 3 Sep 2010 13:54:02 +0000 (UTC) From: Fabien Thomas <fabient@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r212176 - head/usr.sbin/pmcstat Message-ID: <201009031354.o83Ds3Tm050252@svn.freebsd.org>
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Author: fabient Date: Fri Sep 3 13:54:02 2010 New Revision: 212176 URL: http://svn.freebsd.org/changeset/base/212176 Log: When an asm location cannot be resolved to a function the cost will be spread as small value and then filtered by the threshold. As a first step solution display the number of event that cannot be resolved as a valid function location. MFC after: 1week Modified: head/usr.sbin/pmcstat/pmcpl_callgraph.c head/usr.sbin/pmcstat/pmcpl_calltree.c head/usr.sbin/pmcstat/pmcstat_log.c head/usr.sbin/pmcstat/pmcstat_log.h Modified: head/usr.sbin/pmcstat/pmcpl_callgraph.c ============================================================================== --- head/usr.sbin/pmcstat/pmcpl_callgraph.c Fri Sep 3 11:58:50 2010 (r212175) +++ head/usr.sbin/pmcstat/pmcpl_callgraph.c Fri Sep 3 13:54:02 2010 (r212176) @@ -149,6 +149,8 @@ pmcstat_cgnode_hash_lookup_pc(struct pmc */ if ((sym = pmcstat_symbol_search(image, pc)) != NULL) pc = sym->ps_start; + else + pmcstat_stats.ps_samples_unknown_function++; for (hash = i = 0; i < sizeof(uintfptr_t); i++) hash += (pc >> i) & 0xFF; Modified: head/usr.sbin/pmcstat/pmcpl_calltree.c ============================================================================== --- head/usr.sbin/pmcstat/pmcpl_calltree.c Fri Sep 3 11:58:50 2010 (r212175) +++ head/usr.sbin/pmcstat/pmcpl_calltree.c Fri Sep 3 13:54:02 2010 (r212176) @@ -615,6 +615,8 @@ pmcpl_ct_node_hash_lookup_pc(struct pmcp */ if ((sym = pmcstat_symbol_search(image, pc)) != NULL) pc = sym->ps_start; + else + pmcstat_stats.ps_samples_unknown_function++; for (hash = i = 0; i < (int)sizeof(uintfptr_t); i++) hash += (pc >> i) & 0xFF; Modified: head/usr.sbin/pmcstat/pmcstat_log.c ============================================================================== --- head/usr.sbin/pmcstat/pmcstat_log.c Fri Sep 3 11:58:50 2010 (r212175) +++ head/usr.sbin/pmcstat/pmcstat_log.c Fri Sep 3 13:54:02 2010 (r212176) @@ -2168,6 +2168,7 @@ pmcstat_shutdown_logging(void) PRINT("#samples/total", samples_total); PRINT("#samples/unclaimed", samples_unknown_offset); PRINT("#samples/unknown-object", samples_indeterminable); + PRINT("#samples/unknown-function", samples_unknown_function); PRINT("#callchain/dubious-frames", callchain_dubious_frames); } Modified: head/usr.sbin/pmcstat/pmcstat_log.h ============================================================================== --- head/usr.sbin/pmcstat/pmcstat_log.h Fri Sep 3 11:58:50 2010 (r212175) +++ head/usr.sbin/pmcstat/pmcstat_log.h Fri Sep 3 13:54:02 2010 (r212176) @@ -164,6 +164,7 @@ struct pmcstat_stats { int ps_samples_skipped; /* #samples filtered out for any reason */ int ps_samples_unknown_offset; /* #samples of rank 0 not in a map */ int ps_samples_indeterminable; /* #samples in indeterminable images */ + int ps_samples_unknown_function;/* #samples with unknown function at offset */ int ps_callchain_dubious_frames;/* #dubious frame pointers seen */ }; extern struct pmcstat_stats pmcstat_stats; /* statistics */
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