> > mhm i installed librbd1-dbg and librados2-dbg - but the output still > looks useless to me. Should i upload it somewhere? >>Meh, if it's all just symbols it's probably not that helpful. Last Time I have done perf, even with all debug packages (ceph debug package, kernel debug, libc6 debug package,..) I have remaining unresolved symbols Sage Have run my perf report through c++filt, to have missing symbols. see here: http://article.gmane.org/gmane.comp.file-systems.ceph.devel/22089/match=client+cpu+usage+kbrd+vs+librbd+perf+report ----- Mail original ----- De: "Mark Nelson" <mnelson@xxxxxxxxxx> À: "Stefan Priebe" <s.priebe@xxxxxxxxxxxx>, "ceph-devel" <ceph-devel@xxxxxxxxxxxxxxx> Envoyé: Mardi 10 Février 2015 22:38:07 Objet: Re: speed decrease since firefly,giant,hammer the 2nd try On 02/10/2015 03:11 PM, Stefan Priebe wrote: > > mhm i installed librbd1-dbg and librados2-dbg - but the output still > looks useless to me. Should i upload it somewhere? Meh, if it's all just symbols it's probably not that helpful. I've summarized your results here: 1 concurrent 4k write (libaio, direct=1, iodepth=1) IOPS Latency wb on wb off wb on wb off dumpling 10870 536 ~100us ~2ms firefly 10350 525 ~100us ~2ms So in single op tests dumpling and firefly are far closer. Now let's see each of these cases with iodepth=32 (still 1 thread for now). Mark > > Stefan > -- > To unsubscribe from this list: send the line "unsubscribe ceph-devel" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > 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 majordomo@xxxxxxxxxxxxxxx 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 majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
