f19eaa7f53
This patch sets can_queue in the aic94xx driver's scsi_host to better performing values than what's there currently. It seems that asd_ha->seq.can_queue reflects the number of requests that can be queued per controller; so long as there's one scsi_host per controller, it seems logical that the scsi_host ought to have the same can_queue value. To the best of my (still limited) knowledge, this method provides the correct value. The effect of leaving this value set to 1 is terrible performance in the case of either (a) certain Maxtor SAS drives flying solo or (b) flooding several disks with I/O simultaneously (md-raid). There may be more scenarios where we see similar problems that I haven't uncovered. Signed-off-by: Darrick J. Wong <djwong@us.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com> |
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| .. | ||
| Kconfig | ||
| Makefile | ||
| aic94xx.h | ||
| aic94xx_dev.c | ||
| aic94xx_dump.c | ||
| aic94xx_dump.h | ||
| aic94xx_hwi.c | ||
| aic94xx_hwi.h | ||
| aic94xx_init.c | ||
| aic94xx_reg.c | ||
| aic94xx_reg.h | ||
| aic94xx_reg_def.h | ||
| aic94xx_sas.h | ||
| aic94xx_scb.c | ||
| aic94xx_sds.c | ||
| aic94xx_seq.c | ||
| aic94xx_seq.h | ||
| aic94xx_task.c | ||
| aic94xx_tmf.c | ||