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, 2006-09-20 at 19:25 +0200, Bernhard Limbach wrote: > Hi list, > > We observe that the sync-rate is extremly slow with kernel 2.6.17. > Did you check "hdparm -t <underlying volume name>" is it slow? > Platform: > > - 2x HP-Proliant DL-380 G4 > drbd-connection over Gigabit crossover (using bonding-interface) > > - Fedora Core 5 > > - same observation for both drbd-0.7.20 and drbd-0.7.21, compiled from tgz. > > > With kernel 2.6.16_1.2133_FC5smp, everything was fine. Just when changing the kernel to 2.6.17-1.2174_FC5smp, the synch rate is extremly low (about one to two MByte/s). The network connection is still fast (e.g. copying a large file via scp). > > Using the non-smp-kernel does not make a difference. > > We did not touch the drbd-configuration when changing the kernels, we just added the appropriate kernel-modul for drbd. The kernels we use are those provided by Fedora. > > It's reproducable, just rebooting with the old kernel gives the correct performance. Unfortunately we need a more recent kernel than 2.6.16 :( > > Did anyone observe something similar ?? > > Thanks for any advice and best regards, > Bernhard -- Milind "The world is divided into one group: those who start counting at 0, and those who don't."