Thanks Andrew!! On 6/1/2023 3:34 AM, Andrew Morton wrote: >> This patch is tested on Android, Snapdragon SoC with 8Gb RAM, 4GB swap >> mounted on zram which has 2GB of backingdev. The test case involved >> launching some memory hungry apps in an order and do the proactive >> reclaim for the app that went to background using madvise(MADV_PAGEOUT). >> We are seeing ~40% less total values of psi mem some and full when this >> patch is combined with [1]. > Does this accounting inaccuracy have any perceptible runtime effects? > With the testcase mentioned, we are able to achieve better app concurrency(It is a measure on Android of how many apps that can survive by not getting killed by lmkd(which relies on PSI events to take the decissions) by the end of the testcase). The total memsome and memfull psi events(measured in usec) are as below: mem PSI w/o patch with patch some 61255313 21867736 full 31353138 15391454 Thanks, Charan >
