It seems that can_queue on mptsas controllers is clamped to 128 even though the hardware can have much larger queues. Clamp to a higher value to utilize the hardware more effectively--with a large number of disks I see contention for queue slots, and with the higher clamp I don't. Signed-off-by: Darrick J. Wong <djwong@xxxxxxxxxx> --- drivers/message/fusion/mptbase.h | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/drivers/message/fusion/mptbase.h b/drivers/message/fusion/mptbase.h index fe90233..5d8c57e 100644 --- a/drivers/message/fusion/mptbase.h +++ b/drivers/message/fusion/mptbase.h @@ -159,7 +159,7 @@ */ #define MPT_FC_CAN_QUEUE 1024 #define MPT_SCSI_CAN_QUEUE 127 -#define MPT_SAS_CAN_QUEUE 127 +#define MPT_SAS_CAN_QUEUE 511 /* * Set the MAX_SGE value based on user input. -- 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
