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[v3,16/23] staging/rdma/hfi1: Increase SDMA descriptor queue size

Message ID 1445869729-7507-17-git-send-email-ira.weiny@intel.com (mailing list archive)
State Not Applicable
Headers show

Commit Message

Ira Weiny Oct. 26, 2015, 2:28 p.m. UTC 
From: Ignacio Hernandez <ignacio.hernandez@intel.com>

A value of 2048 increased PSM performance while not impacting verbs
performance.

Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Reviewed-by: Mitko Haralanov <mitko.haralanov@intel.com>
Signed-off-by: Ignacio Hernandez <ignacio.hernandez@intel.com>
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
---
 drivers/staging/rdma/hfi1/sdma.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/drivers/staging/rdma/hfi1/sdma.c b/drivers/staging/rdma/hfi1/sdma.c
index 77800df1d3b8..a82588200bdb 100644
--- a/drivers/staging/rdma/hfi1/sdma.c
+++ b/drivers/staging/rdma/hfi1/sdma.c
@@ -65,7 +65,7 @@ 
 #include "trace.h"
 
 /* must be a power of 2 >= 64 <= 32768 */
-#define SDMA_DESCQ_CNT 1024
+#define SDMA_DESCQ_CNT 2048
 #define SDMA_DESC_INTR 64
 #define INVALID_TAIL 0xffff