Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
On Wed, 2005-04-06 at 15:49 -0500, Nate Carlson wrote: > On Wed, 6 Apr 2005, Todd Denniston wrote: > > Ouch, that is one heck of a diffrence. However on thing 0.7 has over > > 0.6 is that even on a cold restart, once the devices have fully synced > > the first time, is that unless you force it to, 0.7 only has to sync > > what has changed. > > Yeah, but the slow write speed for normal operations won't be acceptable. > :( It's interesting that you should point that out. We have a RAID5 array with a 3ware 7500-4 in one machine and 3ware 3W-6400 in the other. Both machines have 3com gigabit nic's. We've only ever used DRBD 0.7.5 on this setup and sync performance isn't too shabby (20,000 K/sec, although I think I may have seen 30,000) but write performance seems to be rather poor (no benchmarks on this). The machines aren't the fastest machines around, but they're fairly decent Athlon XP's with lots of ram. Perhaps we are at the limits of our hardware, but I expected a little better performance while writing to the drbd device. Perhaps it is a 3ware<->DRBD issue? Cheers -- James Doherty - Systems Engineer Zeald.com - Websites That Work! Web: www.zeald.com | Ph: +64 9 415 7575