fbf228931c
Assign a higher I/O priority to foreground I/O compared to background
I/O to improve responsiveness of the foreground app.
The command below shows that this CL has the intended effect on a device
with kernel 5.10:
$ adb shell 'cd /dev/blkio && grep -aH . blkio.prio.class background/blkio.prio.class'
blkio.prio.class:none-to-rt
background/blkio.prio.class:restrict-to-be
From a device with an Android 6.1 kernel:
$ grep -aH . blkio.prio.class background/blkio.prio.class'
blkio.prio.class:promote-to-rt
background/blkio.prio.class:restrict-to-be
Bug: 347109476
Change-Id: I6f1ea6a89a8dfaa223e8d2a82917b4de2d7bf1cf
Signed-off-by: Bart Van Assche <bvanassche@google.com>
11 lines
501 B
Text
11 lines
501 B
Text
on init
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# Make foreground and background I/O priority different. none-to-rt was
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# introduced in kernel 5.14. promote-to-rt was introduced in kernel 6.5.
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# Write none-to-rt first and promote-to-rt next to support both older and
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# newer kernel versions.
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write /dev/blkio/blkio.prio.class none-to-rt
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write /dev/blkio/blkio.prio.class promote-to-rt
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on property:ro.build.type=userdebug
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write /dev/sys/block/bootdevice/pixel/enable_pixel_ufs_logging 1
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chown system /dev/sg3
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