Hi James, Is it possible to get tcmalloc in trusty updated? See below.
Thanks! sage On Thu, 26 Mar 2015, Somnath Roy wrote: > Sage, > Here is the tcmalloc issue I was talking in the performance meeting. > > http://code.google.com/p/gperftools/issues/detail?id=585 > > The tcmalloc is consuming lot of cpus (and eventually slowing down the > performance) with the following perf top trace. > > 25.73% libtcmalloc.so.4.1.2 [.] tcmalloc::CentralFreeList::FetchFromSpans() > 12.52% libtcmalloc.so.4.1.2 [.] > tcmalloc::ThreadCache::ReleaseToCentralCache(tcmalloc::ThreadCache::FreeList*, > unsigned long, int) > 11.62% libtcmalloc.so.4.1.2 [.] > tcmalloc::CentralFreeList::ReleaseToSpans(void*) > 1.56% [kernel] [k] __copy_user_nocache > 1.44% libtcmalloc.so.4.1.2 [.] tcmalloc::CentralFreeList::RemoveRange(void*, > void*, int) > 1.39% libtcmalloc.so.4.1.2 [.] > tcmalloc::CentralFreeList::ReleaseListToSpans(void*) > 0.89% libtcmalloc.so.4.1.2 [.] operator new(unsigned long) > > > The TCMALLOC_MAX_TOTAL_THREAD_CACHE_BYTES is alleviating that but the env > variable setting for this is a noop in the binary we are having in Ubuntu > 14.04. It is fixed in gperftools-2.1.90 release. > See the following link. > > http://code.google.com/p/gperftools/ > > We can request Ubuntu guys to incorporate this version or the latest tcmalloc > version which is gperftools-2.4. > > It will be really helpful if you can push them to incorporate this in 14.04 > updates. > > Thanks & Regards > Somnath > > ________________________________ > > PLEASE NOTE: The information contained in this electronic mail message is > intended only for the use of the designated recipient(s) named above. If the > reader of this message is not the intended recipient, you are hereby notified > that you have received this message in error and that any review, > dissemination, distribution, or copying of this message is strictly > prohibited. If you have received this communication in error, please notify > the sender by telephone or e-mail (as shown above) immediately and destroy > any and all copies of this message in your possession (whether hard copies or > electronically stored copies). > > -- > To unsubscribe from this list: send the line "unsubscribe ceph-devel" in > the body of a message to [email protected] > More majordomo info at http://vger.kernel.org/majordomo-info.html > > -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
