Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
Matteo wrote: > BUT, even switching to new kernel my problems remains the same... > I have tested latest drbd/kernel with CORE2/QUAD processors and i'm in deep > troubles, syncer get stuck at 20mb/s with incredible high await/iowait times: > > [root at nas1 queue]# iostat -x -m 1 > Linux 2.6.24-rc2 (nas1) 11/07/2007 > > avg-cpu: %user %nice %system %iowait %idle > 0.91 0.00 15.31 80.57 3.21 > I have too a dual-core processor, with an identical configuration on a P4 system. This is a test system and it is still to finish. Now i tested IO output and i got some curious results. On the dualcore system with a hw raid 5, i got max 20mb/s on drbd device...on the same raid disc, but just lvm and no drbd i got the same speed, 20mb/s (both of the result i got with pretty high %iowait results (around 70%)). On the P4 system i got always 20mb/s on the drbd device and 40mb/s on the lvm partition...in this case there is no hw raid and a normal eide disk. Also on this system anyway i got pretty high %iowait results. Both of them are identical system, debian etch with 2.6.23.1 kernel and drbd 8.0.7. With iperf on the network interfaces i get around 500 mbits and 700 mbits. Some strangeness here :-) Pier