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Date: Tue, 25 Aug 2020 16:52:54 +0800 From: Alex Shi <alex.shi@...ux.alibaba.com> To: Daniel Jordan <daniel.m.jordan@...cle.com>, Hugh Dickins <hughd@...gle.com> Cc: Andrew Morton <akpm@...ux-foundation.org>, mgorman@...hsingularity.net, tj@...nel.org, khlebnikov@...dex-team.ru, willy@...radead.org, hannes@...xchg.org, lkp@...el.com, linux-mm@...ck.org, linux-kernel@...r.kernel.org, cgroups@...r.kernel.org, shakeelb@...gle.com, iamjoonsoo.kim@....com, richard.weiyang@...il.com, kirill@...temov.name, alexander.duyck@...il.com, rong.a.chen@...el.com, mhocko@...e.com, vdavydov.dev@...il.com, shy828301@...il.com Subject: Re: [PATCH v18 00/32] per memcg lru_lock 在 2020/8/25 上午9:56, Daniel Jordan 写道: > On Mon, Aug 24, 2020 at 01:24:20PM -0700, Hugh Dickins wrote: >> On Mon, 24 Aug 2020, Andrew Morton wrote: >>> On Mon, 24 Aug 2020 20:54:33 +0800 Alex Shi <alex.shi@...ux.alibaba.com> wrote: >> Andrew demurred on version 17 for lack of review. Alexander Duyck has >> been doing a lot on that front since then. I have intended to do so, >> but it's a mirage that moves away from me as I move towards it: I have > > Same, I haven't been able to keep up with the versions or the recent review > feedback. I got through about half of v17 last week and hope to have more time > for the rest this week and beyond. > >>>> Following Daniel Jordan's suggestion, I have run 208 'dd' with on 104 >>>> containers on a 2s * 26cores * HT box with a modefied case: > > Alex, do you have a pointer to the modified readtwice case? > Hi Daniel, my readtwice modification like below. diff --git a/case-lru-file-readtwice b/case-lru-file-readtwice index 85533b248634..57cb97d121ae 100755 --- a/case-lru-file-readtwice +++ b/case-lru-file-readtwice @@ -15,23 +15,30 @@ . ./hw_vars -for i in `seq 1 $nr_task` -do - create_sparse_file $SPARSE_FILE-$i $((ROTATE_BYTES / nr_task)) - timeout --foreground -s INT ${runtime:-600} dd bs=4k if=$SPARSE_FILE-$i of=/dev/null > $TMPFS_MNT/dd-output-1-$i 2>&1 & - timeout --foreground -s INT ${runtime:-600} dd bs=4k if=$SPARSE_FILE-$i of=/dev/null > $TMPFS_MNT/dd-output-2-$i 2>&1 & -done +OUT_DIR=$(hostname)-${nr_task}c-$(((mem + (1<<29))>>30))g +TEST_CASES=${@:-$(echo case-*)} + +echo $((1<<30)) > /proc/sys/vm/max_map_count +echo $((1<<20)) > /proc/sys/kernel/threads-max +echo 1 > /proc/sys/vm/overcommit_memory +#echo 3 > /proc/sys/vm/drop_caches + + +i=1 + +if [ "$1" == "m" ];then + mount_tmpfs + create_sparse_root + create_sparse_file $SPARSE_FILE-$i $((ROTATE_BYTES)) + exit +fi + + +if [ "$1" == "r" ];then + (timeout --foreground -s INT ${runtime:-300} dd bs=4k if=$SPARSE_FILE-$i of=/dev/null > $TMPFS_MNT/dd-output-1-$i 2>&1)& + (timeout --foreground -s INT ${runtime:-300} dd bs=4k if=$SPARSE_FILE-$i of=/dev/null > $TMPFS_MNT/dd-output-2-$i 2>&1)& +fi wait sleep 1 -for file in $TMPFS_MNT/dd-output-* -do - [ -s "$file" ] || { - echo "dd output file empty: $file" >&2 - } - cat $file - rm $file -done - -rm `seq -f $SPARSE_FILE-%g 1 $nr_task` diff --git a/hw_vars b/hw_vars index 8731cefb9f57..ceeaa9f17c0b 100755 --- a/hw_vars +++ b/hw_vars @@ -1,4 +1,4 @@ -#!/bin/sh +#!/bin/sh -ex if [ -n "$runtime" ]; then USEMEM="$CMD ./usemem --runtime $runtime" @@ -43,7 +43,7 @@ create_loop_devices() modprobe loop 2>/dev/null [ -e "/dev/loop0" ] || modprobe loop 2>/dev/null - for i in $(seq 0 8) + for i in $(seq 0 104) do [ -e "/dev/loop$i" ] && continue mknod /dev/loop$i b 7 $i
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