Evolution-x-devices/device_google_taimen
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Switch to deadline IO scheduler post boot.

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The deadline IO scheduler results in lower latency SD, and pulls in
latency outliers (especially when the flash starts getting fragmented).
Switch to deadline post boot.

Test: various workloads, both synthetic (fio) as well as actual
workloads (app launch, ioshark).

Bug: 63630139
Change-Id: I40baa222c92330757303ee9c2fd0e3f075dfac78
Signed-off-by: Mohan Srinivasan <srmohan@google.com>
This commit is contained in:
Mohan Srinivasan
2017-10-27 15:45:58 -07:00
parent c2b5bb133e
commit 5e3069df10
1 changed files with 2 additions and 0 deletions
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init-taimen.rc
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@@ -23,6 +23,8 @@ on property:sys.boot_completed=1
write /sys/block/sde/queue/iostats 1
write /sys/block/dm-0/queue/read_ahead_kb 512
write /sys/block/dm-1/queue/read_ahead_kb 512
write /sys/block/sda/queue/scheduler deadline
write /sys/block/sde/queue/scheduler deadline
on boot
# Allow ftm4 autotune from adb shell