diff options
| author | Igor Pylypiv <ipylypiv@google.com> | 2024-11-26 22:49:23 +0000 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2024-12-04 14:46:58 -0500 |
| commit | b64004dbcd239d5eeac0b41c167a306291510d55 (patch) | |
| tree | 039702db034cefc7d68ab4394cc9818a9eb9b7a7 /drivers/scsi/pm8001 | |
| parent | 4c567a9d0e009c998125d549dc53ab0d21724a55 (diff) | |
scsi: pm80xx: Increase reserved tags from 8 to 128
Increase the number of reserved tags to prevent command processing failures
when the driver is under stress. 8 reserved tags are quickly getting all
used up leading to errors when command completions are delayed.
The driver needs ~512 ccbs/tags for maximum I/O utilization:
16 (max disks) * 32 (max SATA queue depth) = ~512 ccbs/tags.
By reserving 128 tags the driver will still have plenty of tags/ccbs left:
1024 (max ccbs) - 128 (reserved slot) = 896 tags/ccbs left.
Signed-off-by: Igor Pylypiv <ipylypiv@google.com>
Signed-off-by: Salomon Dushimirimana <salomondush@google.com>
Link: https://lore.kernel.org/r/20241126224923.973528-1-salomondush@google.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/pm8001')
| -rw-r--r-- | drivers/scsi/pm8001/pm8001_defs.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/scsi/pm8001/pm8001_defs.h b/drivers/scsi/pm8001/pm8001_defs.h index 7871e29a820a..4e19d61dffbb 100644 --- a/drivers/scsi/pm8001/pm8001_defs.h +++ b/drivers/scsi/pm8001/pm8001_defs.h @@ -90,7 +90,7 @@ enum port_type { #define PM8001_MAX_PORTS 16 /* max. possible ports */ #define PM8001_MAX_DEVICES 2048 /* max supported device */ #define PM8001_MAX_MSIX_VEC 64 /* max msi-x int for spcv/ve */ -#define PM8001_RESERVE_SLOT 8 +#define PM8001_RESERVE_SLOT 128 #define PM8001_SECTOR_SIZE 512 #define PM8001_PAGE_SIZE_4K 4096 |