Evolution-X-Tensor/device_google_gs101
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init.gs101.rc: Reduce the queue depth for /dev/sda

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Use the default chosen by the block layer (64). The purpose of this patch is
to reduce storage latency. Without this patch:

 # grep -aH . /sys/block/sd*/queue/nr_requests
/sys/block/sda/queue/nr_requests:256
/sys/block/sdb/queue/nr_requests:64
/sys/block/sdc/queue/nr_requests:64
/sys/block/sdd/queue/nr_requests:64

With this patch applied:

 # grep -aH . /sys/block/sd*/queue/nr_requests
/sys/block/sda/queue/nr_requests:64
/sys/block/sdb/queue/nr_requests:64
/sys/block/sdc/queue/nr_requests:64
/sys/block/sdd/queue/nr_requests:64

Bug: 194450129
Test: Built Android images and installed these on an Android phone.
Change-Id: I236874f3791d62a2d5faf0d37a149025639f5c4a
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
This commit is contained in:
Bart Van Assche 2021-07-26 16:23:29 -07:00
parent e00e552787
commit 864a08d3a7
1 changed files with 1 additions and 1 deletions
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2
conf/init.gs101.rc
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@ -676,7 +676,7 @@ on property:init.svc.vendor.charger=running
on property:sys.boot_completed=1
# Runtime fs tuning
write /sys/block/sda/queue/nr_requests 128
write /sys/block/sda/queue/nr_requests 64
write /sys/block/sda/queue/iostats 1
write /sys/block/sda/queue/iosched/slice_idle 8
write /dev/sys/fs/by-name/userdata/data_io_flag 8