kernel_optimize_test/Documentation/block
Alan D. Brunelle 488991e28e block: Added in stricter no merge semantics for block I/O
Updated 'nomerges' tunable to accept a value of '2' - indicating that _no_
merges at all are to be attempted (not even the simple one-hit cache).

The following table illustrates the additional benefit - 5 minute runs of
a random I/O load were applied to a dozen devices on a 16-way x86_64 system.

nomerges        Throughput      %System         Improvement (tput / %sys)
--------        ------------    -----------     -------------------------
0               12.45 MB/sec    0.669365609
1               12.50 MB/sec    0.641519199     0.40% / 2.71%
2               12.52 MB/sec    0.639849750     0.56% / 2.96%

Signed-off-by: Alan D. Brunelle <alan.brunelle@hp.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2010-01-29 09:04:08 +01:00
..
00-INDEX block: remove Documentation/block/as-iosched.txt 2009-12-18 12:37:48 +01:00
barrier.txt [BLOCK] Get rid of request_queue_t typedef 2007-07-24 09:28:11 +02:00
biodoc.txt Removed reference to non-existing file Documentation/PCI/PCI-DMA-mapping.txt 2009-06-02 14:52:32 +02:00
capability.txt genhd: expose AN to user space 2007-05-23 20:14:11 -07:00
data-integrity.txt Trivial typo fixes in Documentation/block/data-integrity.txt. 2009-07-01 10:56:25 +02:00
deadline-iosched.txt trivial: Miscellaneous documentation typo fixes 2009-06-12 18:01:47 +02:00
ioprio.txt Update Jens Axboe's email in Documentation/* 2007-10-16 09:59:55 +02:00
queue-sysfs.txt block: Added in stricter no merge semantics for block I/O 2010-01-29 09:04:08 +01:00
request.txt Update Jens Axboe's email in Documentation/* 2007-10-16 09:59:55 +02:00
stat.txt [PATCH] block/stat.txt 2006-01-08 20:14:01 -08:00
switching-sched.txt block: Repeated lines in switching-sched.txt 2009-03-26 11:01:28 +01:00