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Groups > linux.kernel > #1213261

[PATCH 5/6] RDS: flush the FMR pool less often

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FMR flush is an expensive and time consuming operation. Reduce the
frequency of FMR pool flush by 50% so that more FMR work gets accumulated
for more efficient flushing.

Signed-off-by: Santosh Shilimkar <ssantosh@kernel.org>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
---
 net/rds/ib_rdma.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/rds/ib_rdma.c b/net/rds/ib_rdma.c
index 2ac78c9..e596dfb 100644
--- a/net/rds/ib_rdma.c
+++ b/net/rds/ib_rdma.c
@@ -737,7 +737,7 @@ void rds_ib_free_mr(void *trans_private, int invalidate)
 
 	/* If we've pinned too many pages, request a flush */
 	if (atomic_read(&pool->free_pinned) >= pool->max_free_pinned ||
-	    atomic_read(&pool->dirty_count) >= pool->max_items / 10)
+	    atomic_read(&pool->dirty_count) >= pool->max_items / 5)
 		queue_delayed_work(rds_ib_fmr_wq, &pool->flush_worker, 10);
 
 	if (invalidate) {
-- 
1.9.1

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[PATCH 0/6] RDS: Few more fixes Santosh Shilimkar <santosh.shilimkar@oracle.com> - 2015-08-25 21:10 +0200
  [PATCH 6/6] RDS: remove superfluous from rds_ib_alloc_fmr() Santosh Shilimkar <santosh.shilimkar@oracle.com> - 2015-08-25 21:10 +0200
  [PATCH 1/6] RDS: fix the dangling reference to rds_ib_incoming_slab Santosh Shilimkar <santosh.shilimkar@oracle.com> - 2015-08-25 21:10 +0200
  [PATCH 3/6] RDS: fix fmr pool dirty_count Santosh Shilimkar <santosh.shilimkar@oracle.com> - 2015-08-25 21:10 +0200
  [PATCH 2/6] RDS: Fix rds MR reference count in rds_rdma_unuse() Santosh Shilimkar <santosh.shilimkar@oracle.com> - 2015-08-25 21:10 +0200
  [PATCH 5/6] RDS: flush the FMR pool less often Santosh Shilimkar <santosh.shilimkar@oracle.com> - 2015-08-25 21:10 +0200
  Re: [PATCH 0/6] RDS: Few more fixes David Miller <davem@davemloft.net> - 2015-08-26 01:30 +0200

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