Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
Francis I. Malolot <francis_m at ...> writes: > > >>>When putting linux software raid5 on top it goes unusable slow > > Raid 5 slow performance is normal especially write because > it must read overhead blocks in the stripe to recreate the parity block. > > Please look where is the bottleneck. disk write without drbd 40MB/sec disk write with drbd (recent kernel) ~ 3MB/sec (gigabit link) So how can I check why drbd slows things so terrible down? Yes there is a bottleneck. But without drbd all seems fine, with drbd not. Thanks for helping Torsten