Hi Mark, I'm not available for today (Next week I'll finally have a microphone ;) But Here my progress about client side performance qemu scaling ------------ I'm finally able to scale inside 1 guest vm with iothreads + krbd + virtio disks I can reach now 90000iops in 1 guest vm (30000 iops by iothread) -object iothread,id=iothread0 -object iothread,id=iothread1 -object iothread,id=iothread2 -device virtio-blk-pci,....,iothread=iothread0 -drive file=/dev/rbd/test/test -device virtio-blk-pci,....,iothread=iothread1 -drive file=/dev/rbd/test/test -device virtio-blk-pci,....,iothread=iothread2 -drive file=/dev/rbd/test/test Currently It's not possible to bind multiple iothread on 1 virtio disk, but you can define multiple virtio disk with same rbd volume, and do some multipathing inside the guest vm. I think qemu plan to implement multiqueue + multi iothread for same disk next year krbd vs lirbd cpu usage ------------------------ Not to much progress, but fio-librbd or qemu-librbd, I see around 3-4x more cpu usage with librbd. That's really a bottleneck in qemu, I can't reach more than 25000iops with same iothread config. I have some perf reports for analysis if someone would help. Regards, Alexandre ----- Mail original ----- De: "Mark Nelson" <mark.nelson@xxxxxxxxxxx> À: ceph-devel@xxxxxxxxxxxxxxx Envoyé: Mardi 4 Novembre 2014 16:49:15 Objet: FIXED: 11/5/2014 Weekly Ceph Performance Meeting IS ON! Hi All, Got the date wrong the first time. 11/5/2014 is correct! 8AM PST as usual. We are going to try a little experiment and leave the Agenda blank for you guys to fill in. If you are planning on attending and have something you want to discuss, please add it! We've also added a projects and backlog section at the top of the etherpad for on-going efforts and the folks that are working on them. For any projects or names of people we've missed, please update! Here's the links: Etherpad URL: http://pad.ceph.com/p/performance_weekly To join the Meeting: https://bluejeans.com/268261044 To join via Browser: https://bluejeans.com/268261044/browser To join with Lync: https://bluejeans.com/268261044/lync To join via Room System: Video Conferencing System: bjn.vc -or- 199.48.152.152 Meeting ID: 268261044 To join via Phone: 1) Dial: +1 408 740 7256 +1 888 240 2560(US Toll Free) +1 408 317 9253(Alternate Number) (see all numbers - http://bluejeans.com/numbers) 2) Enter Conference ID: 268261044 Mark -- 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
