Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
On 11/30/2011 08:57 PM, Arnold Krille wrote: > Hi again, > > public thanks to Andreas Kurz, who answered and helped in private (altough > only writing one email:). yeah ... sorry, wrong reply button > > According to his recommendation I updated both nodes to 8.3.12. That alone > didn't fix the performance problem. But setting "al-extents 3389;" (and getting > the parameter correctly) seems to fix the problem. good to hear. Regards, Andreas -- Need help with DRBD? http://www.hastexo.com/now > > Gotta see if it proves itself tomorrow when my colleagues want to do their > daily share of work. > > Have a good night, > > Arnold > > On Wednesday 30 November 2011 17:03:21 Arnold Krille wrote: >> I am a bit stumped currently. Our drbd setup seems to include "extra low >> performance" as a feature and I don't exactly know where the reason is. >> On thing the bothers bothers us is that the versions of the userspace tools >> and the kernel module differ (drbd8-utils v8.3.7 vs module v8.3.9). >> The newer kernel-module is a side-effect of the kernel from debian squeeze >> backports needed for the new network-cards. But the versions installed on >> both nodes are the same. >> Using latency- and throughput tests from the drbd documentation, the >> latency rises by a factor of ten and the throughput sinks by a factor of >> ~5 from the baccking devices to the drbd device. >> So here are my questions: >> - Could the mixed version be the reason for the performance penalty? >> - Would it be save to downgrade the kernel (and compile the network-driver >> by hand) or is the meta-data on the disk incompatible? >> - Or would you rather update the userspace tools to match the modules >> version? >> >> >> _______________________________________________ >> 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: 286 bytes Desc: OpenPGP digital signature URL: <http://lists.linbit.com/pipermail/drbd-user/attachments/20111130/29982f46/attachment.pgp>