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charset=us-ascii Content-Disposition: inline X-Rspam-User: X-Rspamd-Server: rspam02 X-Rspamd-Queue-Id: C0A7C40006 X-Stat-Signature: 44meqnrty8ao7oxytzxmb8y6dhcy58m7 X-HE-Tag: 1758932103-767234 X-HE-Meta: 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 WkXgO70I GNfx5Gvfu3AQKiRXhq9GxUTwyyUPO+NoHXNydQ2X1QCi/TDPJJEV5CyfzKLl+C/d135Pgd/XlI32OQlAWSRB49U5x3zTH21J+ru73Z33K1HQL+6OiZT1inGqMWLsQIQgEjZl5nb3jhvtb8+7LW2RXJbPbQqDSYi4IvnuTj0ERCFHU+PGwpnhBpC8kNGkOMANES74hZaxWfdxjSEVY4C+MoCwUxtoq0HnYGtXeWRdVRfJ7nQd35RuR3qjlCxkfjadVD/N9Kl2iFOAlf3uXLgs0jVL093AIEAtaxouQC+6VZMxKRMOeKKyo6k+aRaDJiOSk4tmCP2TT5SmZeBo9h8euoVtImfXH7TAeNrc3gOUDYlLU/0WMnSJpbPY6SgwkZq8vonpZBEh86/YkK1ZaaaNyYKMFqg== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 09/26/25 at 11:55pm, Baoquan He wrote: > The detailed information about patch can be found in patch log. Here I > would like to add testing related information. > > On my system, it has 8 nodes, 64G RAM. So I created 4 zram devices of > size 16G. Doing this because I can't find system with 4 free SSD disk ~~~~~~~ This description is misleading, testing this patch needs multiple SSD disks, 2 disks is enough, more is better. Sorry I was dizzy when posting last night. > which can be used as swap devices. And nowadays, swap, zram become more > and more popular, even default setup, so I create zram to test patch. > # free -h > total used free shared buff/cache available > Mem: 62Gi 1.6Gi 61Gi 4.8Mi 276Mi 61Gi > Swap: 63Gi 0B 63Gi > > 1) create zram > #My fedora will add one zram0 by default, I reset it because the zram size if not enough ~s/if/is/ > swapoff /dev/zram0 > > cd /sys/block/ > echo 1 > zram0/reset > cat /sys/class/zram-control/hot_add > cat /sys/class/zram-control/hot_add > cat /sys/class/zram-control/hot_add > > echo 16G > zram0/disksize > echo 16G > zram1/disksize > echo 16G > zram2/disksize > echo 16G > zram3/disksize > > mkswap /dev/zram0 > mkswap /dev/zram1 > mkswap /dev/zram2 > mkswap /dev/zram3 > > swapon /dev/zram0 > swapon /dev/zram1 > swapon /dev/zram2 > swapon /dev/zram3 > > 2) Create memcg with 4G (this avoids noise from other anon process in system) ~~~~~~~~~~~ it should be anon mem regions from other process > cd /sys/fs/cgroup/ > mkdir testing > echo 4G > testing/memory.max > echo 3G > testing/memory.high > > 3) Run usemem in memcg > cgexec -g memory:testing ~/vm-scalability/usemem --init-time -O -y -x -n 31 2G > ~/vm-scalability/temp.txt > > The usemem output is not easy to understand, I will attach my draft > script in thread for easing result collecting and statistics. >