From 50d6a49950b5ffc77b971e60c80045c5d70bda2b Mon Sep 17 00:00:00 2001 From: Sean Hefty Date: Thu, 24 May 2012 18:18:43 -0700 Subject: [PATCH] rsockets: Reduce the default inline size Inline data consumes the same space used by the SGL. Since we reduced the default number of SGEs per SQ entry to 1, also reduce the default inline data size to 16 bytes. Otherwise, the SQ size won't actually be reduced. Although this increases the latency of small messages over 16 bytes, tests show that decreasing the inline data size from 64 bytes to 32 or 16 bytes improves large message bandwidth 8-10%. Sample rstream 64k_bw test results: inline size 64: 24.85 Gbps inline size 16: 26.5 Gbps Signed-off-by: Sean Hefty --- src/rsocket.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/src/rsocket.c b/src/rsocket.c index 529c3b0b..e591116e 100644 --- a/src/rsocket.c +++ b/src/rsocket.c @@ -51,7 +51,6 @@ #include "cma.h" #include "indexer.h" -#define RS_INLINE 64 #define RS_OLAP_START_SIZE 2048 #define RS_MAX_TRANSFER 65536 #define RS_QP_SIZE 384 @@ -223,7 +222,7 @@ static struct rsocket *rs_alloc(struct rsocket *inherited_rs) rs->ctrl_avail = inherited_rs->ctrl_avail; } else { rs->sbuf_size = rs->rbuf_size = RS_BUF_SIZE; - rs->sq_inline = RS_INLINE; + rs->sq_inline = RS_MIN_INLINE; rs->sq_size = rs->rq_size = RS_QP_SIZE; rs->ctrl_avail = RS_QP_CTRL_SIZE; } -- 2.45.2