Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
On Aug 9, 2008, at 12:17 PM, Lars Ellenberg wrote: > familiarize yourself with the concept of the DRBD activity log. > the config parameter would be "al-extents". I have, but no matter whether I adjust it very high or very low, it seems to make no difference. > verify that your disk subsystem has a non-volatile write cache > enabled. Yep. Array write cache enabled when battery present, disk write caches disabled. > then add to DRBDs configuration no-disk-flushes and no-md-flushes. > > see if that helps. Very much so! I have to do some more testing before I'll have comparative numbers, but it's looking quite tolerable at the least. Will report back later with more info. Cheers, -- Casey Allen Shobe Database Architect, The Berkeley Electronic Press cshobe at bepress.com (email/jabber/aim/msn) http://www.bepress.com | +1 (510) 665-1200 x163