488991e28e
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> |
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| .. | ||
| 00-INDEX | ||
| barrier.txt | ||
| biodoc.txt | ||
| capability.txt | ||
| data-integrity.txt | ||
| deadline-iosched.txt | ||
| ioprio.txt | ||
| queue-sysfs.txt | ||
| request.txt | ||
| stat.txt | ||
| switching-sched.txt | ||