diff options
| author | Mike Miller <mike.miller@hp.com> | 2006-12-07 05:35:06 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.osdl.org> | 2006-12-07 17:39:29 +0100 |
| commit | 92c4231aef720bd5e1d634d2f7335f31277318da (patch) | |
| tree | 3c08d3479b2db7db693c5439357648ea02135e2e /drivers/block | |
| parent | [PATCH] cciss: disable DMA prefetch on P600 (diff) | |
| download | linux-92c4231aef720bd5e1d634d2f7335f31277318da.tar.xz linux-92c4231aef720bd5e1d634d2f7335f31277318da.zip | |
[PATCH] cciss: set sector_size to 2048 for performance
Change the blk_queue_max_sectors from 512 to 2048. This helps increase
performance.
[akpm@osdl.org: s/sector_size/max_sectors/]
Signed-off-by: Mike Miller <mike.miller@hp.com>
Cc: Jens Axboe <jens.axboe@oracle.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/block')
| -rw-r--r-- | drivers/block/cciss.c | 12 | ||||
| -rw-r--r-- | drivers/block/cciss.h | 1 |
2 files changed, 10 insertions, 3 deletions
diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c index a17223c43aeb..e61279f6f26e 100644 --- a/drivers/block/cciss.c +++ b/drivers/block/cciss.c @@ -269,6 +269,7 @@ static int cciss_proc_get_info(char *buffer, char **start, off_t offset, "Firmware Version: %c%c%c%c\n" "IRQ: %d\n" "Logical drives: %d\n" + "Max sectors: %d\n" "Current Q depth: %d\n" "Current # commands on controller: %d\n" "Max Q depth since init: %d\n" @@ -279,7 +280,9 @@ static int cciss_proc_get_info(char *buffer, char **start, off_t offset, (unsigned long)h->board_id, h->firm_ver[0], h->firm_ver[1], h->firm_ver[2], h->firm_ver[3], (unsigned int)h->intr[SIMPLE_MODE_INT], - h->num_luns, h->Qdepth, h->commands_outstanding, + h->num_luns, + h->cciss_max_sectors, + h->Qdepth, h->commands_outstanding, h->maxQsinceinit, h->max_outstanding, h->maxSG); pos += size; @@ -1395,7 +1398,7 @@ static void cciss_update_drive_info(int ctlr, int drv_index) /* This is a limit in the driver and could be eliminated. */ blk_queue_max_phys_segments(disk->queue, MAXSGENTRIES); - blk_queue_max_sectors(disk->queue, 512); + blk_queue_max_sectors(disk->queue, h->cciss_max_sectors); blk_queue_softirq_done(disk->queue, cciss_softirq_done); @@ -3347,6 +3350,9 @@ static int __devinit cciss_init_one(struct pci_dev *pdev, hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_ON); cciss_procinit(i); + + hba[i]->cciss_max_sectors = 2048; + hba[i]->busy_initializing = 0; for (j = 0; j < NWD; j++) { /* mfm */ @@ -3371,7 +3377,7 @@ static int __devinit cciss_init_one(struct pci_dev *pdev, /* This is a limit in the driver and could be eliminated. */ blk_queue_max_phys_segments(q, MAXSGENTRIES); - blk_queue_max_sectors(q, 512); + blk_queue_max_sectors(q, hba[i]->cciss_max_sectors); blk_queue_softirq_done(q, cciss_softirq_done); diff --git a/drivers/block/cciss.h b/drivers/block/cciss.h index 0d765f9237be..c3df673f860b 100644 --- a/drivers/block/cciss.h +++ b/drivers/block/cciss.h @@ -77,6 +77,7 @@ struct ctlr_info unsigned int intr[4]; unsigned int msix_vector; unsigned int msi_vector; + int cciss_max_sectors; BYTE cciss_read; BYTE cciss_write; BYTE cciss_read_capacity; |