On Jan 17, 2008 6:45 PM, Pete Wyckoff <pw@xxxxxxx> wrote: > There's nothing particularly stunning here. Suspect Bart has > configuration issues if not even IPoIB will do > 100 MB/s. By this time I found out that the BIOS of the test systems (Intel Server Board S5000PAL) set the PCI-e parameter MaxReadReq to 128 bytes, which explains the low InfiniBand performance. After changing this parameter to 4096 bytes the InfiniBand throughput was as expected: ib_rdma_bw now reports a bandwidth of 933 MB/s. Bart. - To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
