On Wednesday 04 January 2012 13:18:32 François Delpierre wrote: > I noticed I did not reply to the list. So, here is the copy : > > > Hi Eduardo, > > > When I had these horrible performances I was not in a good situations : > - One 2GB disk SSD 7200RPM per node. > - DRBD 8.3, Protocol C, Active-Active > - 2 Network interfaces on a 100Mbits network switch.
That will give you 12MB/s for drbd-io. Maybe 24 if trunked/bonded and your switch does its job right (my hp-switch at home doesn't(*)). Better not set your hopes to high with the ssd... Altough I never heard of an ssd with revolutions-per-minute. If you encounter low io performance (and you will unless your disks are way old and PATA without DMA), invest that ~50€ and give each server a gigabit card. Have fun, Arnold
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