[PATCH] make 16 the default fifo_batch count

Lets just make the default fifo_batch count 16. I see a slight slope in
throughput, but the various interactiveness improvements are worth it,
imho. Plus this gets Andrew of my back, he's been lobbying for this for
a while.

diff --git a/drivers/block/deadline-iosched.c b/drivers/block/deadline-iosched.c
index 6174ca63f9add3e9999dc87ecb08fb70dc6328e7..975e2c70e205f5cd478354f14092d3f85e410dcb 100644 (file)
--- a/drivers/block/deadline-iosched.c
+++ b/drivers/block/deadline-iosched.c
@@ -25,7 +25,7 @@
  * front fifo request expires.
  */
 static int read_expire = HZ / 2;       /* 500ms start timeout */
-static int fifo_batch = 32;            /* 4 seeks, or 64 contig */
+static int fifo_batch = 16;
 static int seek_cost = 16;             /* seek is 16 times more expensive */
 
 /*