https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=200616
Bug ID: 200616
Summary: pmcstat runs out of buckets
Product: Base System
Version: 11.0-CURRENT
Hardware: Any
OS: Any
Status: New
Severity: Affects Only Me
Priority: ---
Component: kern
Assignee: freebsd-bugs@FreeBSD.org
Reporter: hsela...@freebsd.org
Hi,
It has been observed that pmcstat can run out of buckets leading to an assert,
when converting trace data into gprof compatible format. Applying the following
patch, temporarily solves the problem:
diff --git a/usr.sbin/pmcstat/pmcpl_gprof.c b/usr.sbin/pmcstat/pmcpl_gprof.c
index 9ff78e8..4a8849f 100644
--- a/usr.sbin/pmcstat/pmcpl_gprof.c
+++ b/usr.sbin/pmcstat/pmcpl_gprof.c
@@ -445,8 +445,8 @@ pmcpl_gmon_process(struct pmcstat_process *pp, struct
pmcstat_pmcrecord *pmcr,
image, pmcid);
pgf->pgf_pmcid = pmcid;
assert(image->pi_end > image->pi_start);
- pgf->pgf_nbuckets = (image->pi_end - image->pi_start) /
- FUNCTION_ALIGNMENT; /* see <machine/profile.h> */
+ pgf->pgf_nbuckets = (image->pi_end - image->pi_start); // /
+ // FUNCTION_ALIGNMENT; /* see <machine/profile.h> */
pgf->pgf_ndatabytes = sizeof(struct gmonhdr) +
pgf->pgf_nbuckets * sizeof(HISTCOUNTER);
pgf->pgf_nsamples = 0;
--HPS
--
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