Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
And you are perfectly certain you know what you're doing in setting use-bmbv? And you are also perfectly certain you want to set max-buffers != max-epoch-size? And you have a good reason to disable the sndbuf-size 512k you had already set? Just my €.02. Florian On Saturday 01 March 2008 06:49:30 Christian Balzer wrote: > Hello, > > I'm trying to build a HA cluster here. Each node has 8 2.66GHz cpu cores, > 24GB RAM and 8 1TB SATA drives behind a LSI (Fusion MPT) SAS 1068E > controller. Interconnection is via one of 4 1GE interfaces, directly. > Kernel is 2.6.22.18 and DRBD is 8.0.11, the storage device in question is > a 3TB MD RAID5 spread across all 8 drives. The native results for this > device using ext3 and bonnie for benchmarking are: > --- > Version 1.03 ------Sequential Output------ --Sequential Input- > --Random- -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks-- > Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec > %CP borg00a 50000M 120486 36 87998 17 535665 44 > 390.9 1 ------Sequential Create------ --------Random Create-------- > -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete-- files /sec %CP > /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP 128 74265 90 +++++ +++ > 83659 100 71540 88 +++++ +++ 81619 99 --- > > The same test done on the resulting (UpToDate) drbd device: > --- > Version 1.03 ------Sequential Output------ --Sequential Input- > --Random- -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks-- > Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec > %CP borg00a 50000M 41801 13 39659 11 413367 37 > 397.7 1 ------Sequential Create------ --------Random Create-------- > -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete-- files /sec %CP > /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP 128 78847 95 +++++ +++ > 86936 99 78722 95 +++++ +++ 63054 76 --- -- : Florian G. Haas : LINBIT Information Technologies GmbH : Vivenotgasse 48, A-1120 Vienna, Austria Please note: when replying, there is no need to CC my personal address. Replying to the list is fine. Thank you.