https://bugs.kde.org/show_bug.cgi?id=366817
Bug ID: 366817
Summary: VALGRIND_MEMPOOL_CHANGE has a performance bug
Product: valgrind
Version: unspecified
Platform: Ubuntu Packages
OS: Linux
Status: UNCONFIRMED
Severity: normal
Priority: NOR
Component: memcheck
Assignee: [email protected]
Reporter: [email protected]
Using VALGRIND_MEMPOOL_CHANGE is prohibitively slow as it (twice) calls
check_mempool_sane().
Looking at r15577 of memcheck/mc_malloc_wrappers.c, I suggest adding "if
(MP_DETAILED_SANITY_CHECKS" before the two calls to check_mempool_sane() in
MC_(mempool_change).
This speeds up my application by more than a factor of 10 or so…
There are more unconditional calls to check_mempool_sane() in that file; maybe
some of them should be reconsidered as well?
Reproducible: Always
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