Hi,
I have a problem with Dolphin DXH510 latency on the 2.6.18 kernel. DRBD write latency is around 300us. Dolphinics has identified some issues around DMA and interrupt handling - I don't know if it's particularly on my system or if it's a general issue with this kernel. Anybody else with similar problems?
If I change to 2.6.24 or .32 I'm getting write latency around 100-110us which is quite good.
I have tested a Myricom adapter also which gives around 130us. This is still good, and works fine in all three kernels.
Thanks in advance,
Bo
I have a problem with Dolphin DXH510 latency on the 2.6.18 kernel. DRBD write latency is around 300us. Dolphinics has identified some issues around DMA and interrupt handling - I don't know if it's particularly on my system or if it's a general issue with this kernel. Anybody else with similar problems?
If I change to 2.6.24 or .32 I'm getting write latency around 100-110us which is quite good.
I have tested a Myricom adapter also which gives around 130us. This is still good, and works fine in all three kernels.
Thanks in advance,
Bo