Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
Lars Ellenberg wrote: > > / 2004-10-05 17:59:08 +0200 > \ Bernd Schubert: > > On Tuesday 05 October 2004 17:13, Benoit.Ropartz at alcatel.fr wrote: > > > Ok i have tested writes speed during normal operation and i got sames > > > results > > > with two versions ~ 600 Ko/s. > > > > > > But why i find difference when syncing is active (30ko=>2ko) ??? > > > > Just read the changelog of 0.7.5, the write speed barrier of 30MB/s has gone > > with this version. Probably you are now syncing with the full speed of your > > hardware (check the logs or /proc/drbd during the synchronisation to get the > > sync speed) and with the previous version only at 30MB/s and so there was l > > more capacity left for normal writing operation. > > right. > thanks for answering those questions. Just did some looking on the net. What happened to sync-nice (from 0.6.x), does it have an upgrade (0.7.x) counterpart? The reason I ask is that with our setup I found setting sync-max to just under the max our hardware would support and sync-nice to 1, got a nice mix of fast syncing when everyone is at home, but a machine that responds reasonably fast even while syncing during the day. Oh, and understand like Bernd Schubert was saying sync group maters, if you have just one physical device. Although I have a box doing raid5 with 5 drives, the raid5 device is still a single physical device. Head seek to different partitions was trashing my sync speed. -- Todd Denniston Crane Division, Naval Surface Warfare Center (NSWC Crane) Harnessing the Power of Technology for the Warfighter