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Bart Van Assche ec5f635270 Set the I/O scheduler of loop devices to 'none' 
The user interface of Android devices becomes very slow under memory
pressure. This is because Android uses the zram driver on top of the loop
driver for swapping, because under memory pressure the swap code alternates
reads and writes quickly, because mq-deadline is the default scheduler for
loop devices and because mq-deadline delays writes by five seconds for such
a workload with default settings. Fix this by selecting I/O scheduler 'none'
for loop devices.

Bug: 194450129
Test: Built Android images, installed these and verified that the I/O scheduler of all loop devices is 'none' instead of 'mq-deadline'.
Change-Id: Ia5f606504b663948ab56955cad5a71885a356430
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
2021-08-04 08:57:32 -07:00
bootstat Use libgtest_prod_headers. 2021-04-20 15:22:02 -07:00
cli-test [LSC] Add LOCAL_LICENSE_KINDS to system/core 2021-02-19 12:59:05 -08:00
code_coverage [LSC] Add LOCAL_LICENSE_KINDS to system/core 2021-02-19 12:59:05 -08:00
debuggerd Always use main thread pid for manual dumping. 2021-07-30 14:08:03 -07:00
diagnose_usb [LSC] Add LOCAL_LICENSE_KINDS to system/core 2021-02-19 12:59:05 -08:00
fastboot Merge "Remove --wipe-and-use-fbe option from fastboot" 2021-06-16 17:55:36 +00:00
fs_mgr Set the I/O scheduler of loop devices to 'none' 2021-08-04 08:57:32 -07:00
gatekeeperd Remove ndk_platform backend. Use the ndk backend. 2021-07-27 12:19:00 +09:00
healthd [LSC] Add LOCAL_LICENSE_KINDS to system/core 2021-02-19 12:59:05 -08:00
include Remove include/backtrace symlink. 2020-10-20 12:46:14 -07:00
init Merge "Allow mapping of raw block devices to partition names" 2021-08-02 18:59:25 +00:00
janitors Add the two best build system janitors. 2019-03-25 10:25:13 -07:00
libappfuse [LSC] Add LOCAL_LICENSE_KINDS to system/core 2021-02-19 12:59:05 -08:00
libasyncio [LSC] Add LOCAL_LICENSE_KINDS to system/core 2021-02-19 12:59:05 -08:00
libbinderwrapper [LSC] Add LOCAL_LICENSE_KINDS to system/core 2021-02-19 12:59:05 -08:00
libcrypto_utils Make libfs_mgr dependencies vendor_ramdisk_available. 2021-07-23 16:50:06 -07:00
libcutils Migrate Rust libcutils bindings into librustutils. 2021-07-30 07:40:24 -07:00
libdiskconfig [LSC] Add LOCAL_LICENSE_KINDS to system/core 2021-02-19 12:59:05 -08:00
libgrallocusage [LSC] Add LOCAL_LICENSE_KINDS to system/core 2021-02-19 12:59:05 -08:00
libkeyutils Make libfs_mgr dependencies vendor_ramdisk_available. 2021-07-23 16:50:06 -07:00
libmodprobe Completely migrate init first stage to Soong 2021-06-18 14:26:55 +09:00
libnetutils [LSC] Add LOCAL_LICENSE_KINDS to system/core 2021-02-19 12:59:05 -08:00
libpackagelistparser [LSC] Add LOCAL_LICENSE_KINDS to system/core 2021-02-19 12:59:05 -08:00
libprocessgroup libprocessgroup: Activate controllers in cgroup v2 hierarchy at intermediate levels 2021-08-02 20:02:51 +00:00
libqtaguid [LSC] Add LOCAL_LICENSE_KINDS to system/core 2021-02-19 12:59:05 -08:00
libsparse [LSC] Add LOCAL_LICENSE_KINDS to system/core 2021-02-19 12:59:05 -08:00
libstats Use libgtest_prod_headers. 2021-04-20 15:22:02 -07:00
libsuspend [LSC] Add LOCAL_LICENSE_KINDS to system/core 2021-02-19 12:59:05 -08:00
libsync Replace llndk_library with llndk clause in cc_library 2021-04-21 19:13:41 -07:00
libsystem [LSC] Add LOCAL_LICENSE_KINDS to system/core 2021-02-19 12:59:05 -08:00
libsysutils [LSC] Add LOCAL_LICENSE_KINDS to system/core 2021-02-19 12:59:05 -08:00
libusbhost [LSC] Add LOCAL_LICENSE_KINDS to system/core 2021-02-19 12:59:05 -08:00
libutils Revert "Revert "Remove unused String8::setPathName."" 2021-07-19 20:19:44 +00:00
libvndksupport Replace llndk_library with llndk clause in cc_library 2021-04-21 19:13:41 -07:00
llkd Replace writepid with task_profiles command for cgroup migration 2021-06-24 17:24:20 +00:00
mini_keyctl Separate out libkeyutils and mini_keyctl. 2021-03-16 17:39:00 -07:00
mkbootfs Rename system/cote/cpio/ -> system/core/mkbootfs/ 2021-05-05 19:03:36 +08:00
property_service [LSC] Add LOCAL_LICENSE_KINDS to system/core 2021-02-19 12:59:05 -08:00
reboot [LSC] Add LOCAL_LICENSE_KINDS to system/core 2021-02-19 12:59:05 -08:00
rootdir virtualizationservice will clear its own temporary directory. 2021-07-14 14:18:25 +00:00
run-as [LSC] Add LOCAL_LICENSE_KINDS to system/core 2021-02-19 12:59:05 -08:00
sdcard [LSC] Add LOCAL_LICENSE_KINDS to system/core 2021-02-19 12:59:05 -08:00
set-verity-state [LSC] Add LOCAL_LICENSE_KINDS to system/core 2021-02-19 12:59:05 -08:00
shell_and_utilities Add exfat utilities for mkfs and fsck 2021-06-11 09:03:23 +00:00
storaged storaged: remove unused libsysutils dep 2021-06-29 00:10:39 +00:00
toolbox Update owners for modprobe.c 2021-04-01 12:42:21 -07:00
trusty Remove ndk_platform backend. Use the ndk backend. 2021-07-27 12:19:00 +09:00
usbd usbd - remove unused libcutils dep 2021-06-28 23:56:29 +00:00
watchdogd [LSC] Add LOCAL_LICENSE_KINDS to system/core 2021-02-19 12:59:05 -08:00
.clang-format Add a 2 width option of clang format. 2017-03-10 13:01:39 -08:00
.clang-format-2 Move clang-formats to build. 2019-01-18 14:26:33 -08:00
.clang-format-4 Move clang-formats to build. 2019-01-18 14:26:33 -08:00
.gitignore Ignore adb/*.pyc files 2015-08-11 12:59:58 -07:00
CleanSpec.mk snapshotctl don't auto-merge. 2020-03-03 13:19:49 -08:00
METADATA Add METADATA to system/core: Apache2+BSD=NOTICE 2020-04-29 13:16:41 -07:00
MODULE_LICENSE_APACHE2 auto import from //depot/cupcake/@135843 2013-07-30 13:56:49 -07:00
OWNERS Remove baligh@ from owners. CodeShuffle done. 2020-10-17 00:28:10 +00:00
PREUPLOAD.cfg Add AOSP preupload hook. 2020-04-23 11:02:00 -07:00
TEST_MAPPING Clean up cc_test TEST_MAPPING after default update 2021-02-19 20:07:05 +00:00