Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
On 07/24/2012 11:46 AM, Phil Stricker wrote: > Hi! > > I think, I am seing two different Problems of which one is isolated: > > - Slow performance in a VM > The issue seams to be related to different OSs: In a Debian-VM, I am getting nearly full speed of the drbd-block-device , in a CentOS 5.8 VM, I can only see 10% of that speed. > You are using paravirtualized drivers in the VM? > - Slow overall performance of the raid-array: > I cannot reach more than 450 MB/s on the array (LSI 9260-4i, 8x Intel 320 160 GB SSD). I see 450 MB/s in a Raid10 setting and I see 450MB/s in a Raid0 test setting. That is crazy! > You already shared your drbd configuration? ... and the controller has a non-volatile cache? Regards, Andreas -- Need help with DRBD? http://www.hastexo.com/now > Did you ever see that behaviour? > > Best wishes, > Phil > > > >> -----Original Message----- >> From: ff at mpexnet.de [mailto:drbd-user-bounces at lists.linbit.com] On >> Behalf Of Felix Frank >> Sent: Tuesday, July 24, 2012 11:17 AM >> To: Christian Balzer >> Cc: drbd-user at lists.linbit.com >> Subject: Re: [DRBD-user] Slow Reads on VM - Xenserver and DRBD >> >> On 07/24/2012 11:11 AM, Christian Balzer wrote: >>> Yeah, I've read the same thing and am leaning towards KVM for a fully >>> virtualized system, though Vserver and (in the future) LXC work for >>> 90% of the requirements I have. >> >> Seconded. Linux vServer + DRBD make for a robust HA setup at very good >> performance. A vserver RA for pacemaker is floating through the web. >> _______________________________________________ >> drbd-user mailing list >> drbd-user at lists.linbit.com >> http://lists.linbit.com/mailman/listinfo/drbd-user > _______________________________________________ > drbd-user mailing list > drbd-user at lists.linbit.com > http://lists.linbit.com/mailman/listinfo/drbd-user > -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 222 bytes Desc: OpenPGP digital signature URL: <http://lists.linbit.com/pipermail/drbd-user/attachments/20120726/6c21a1cb/attachment.pgp>