Am 27.06.2012 um 19:23 schrieb "Jim Schutt" <jaschut@xxxxxxxxxx>: > On 06/27/2012 09:19 AM, Stefan Priebe wrote: >> Am 27.06.2012 16:55, schrieb Jim Schutt: >>> This is my current best tuning for my hardware, which uses >>> 24 SAS drives/server, and 1 OSD/drive with a journal partition >>> on the outer tracks and btrfs for the data store. >> >> Which raid level do you use? > > No RAID. Each OSD directly accesses a single > disk, via a partition for the journal and a partition > for the btrfs file store for that OSD. So you have 24 threads x 24 osds 576 threads running? > The NICs are Chelsio T4, but I'm not using any of the > TCP stateful offload features for this testing. > I don't know if they have ntuple support, but the > ethtool version I'm using (2.6.33) doesn't mention it. > > For kernels I switch back and forth between latest development > kernel from Linus's tree, or latest stable kernel, depending > on where the kernel development cycle is. I usually switch > to the development kernel around -rc4 or so. > Crazy that this works for you. Btrfs is crashing to me in 20s while running full speed on ssd. 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
