24692 – system nearly loose response when 2 apps consume most RAM on box without swap

Bug 24692 - system nearly loose response when 2 apps consume most RAM on box without swap

Summary: system nearly loose response when 2 apps consume most RAM on box without swap

Status:	RESOLVED INVALID

Alias:	None

Product:	Memory Management
Classification:	Unclassified
Component:	Other (show other bugs)
Hardware:	All Linux

Importance:	P1 normal
Assignee:	Andrew Morton

URL:
Keywords:

Depends on:
Blocks:

Reported:	2010-12-11 15:58 UTC by Gu Rui
Modified:	2012-08-14 14:10 UTC (History)
CC List:	1 user (show)

See Also:
Kernel Version:	2.6.37-rc5-00062-g6313e3c
Subsystem:
Regression:	No
Bisected commit-id:

Attachments
full output of `ps auxw --sort=rss` (19.50 KB, text/plain) 2010-12-11 16:00 UTC, Gu Rui	Details
Add an attachment (proposed patch, testcase, etc.)

Description Gu Rui 2010-12-11 15:58:49 UTC

Hardware configuration:
DELL Vostro3500, Core i3, 2G RAM, no swap in the system.

Steps to Reproduce:
1, launch an app that consume a lot of memories. Just like https://bugs.kde.org/show_bug.cgi?id=259519 , but don't let it consume too much that could trigger a OOM.
2, launch an other RAM consuming app, like chrome(start with multiple tabs)

Actual Results:
The hard disk becomes crazy running and system nearly loose response. Here is the snip of `ps auxw --sort=rss` when system choking:(attachment is the full version)

USER       PID %CPU %MEM    VSZ   RSS TTY      STAT START   TIME COMMAND
root         2  0.0  0.0      0     0 ?        S    14:48   0:00 [kthreadd]
...
grissiom 14694  0.4  0.3 212452  6948 ?        S    23:13   0:00 /home/grissiom/chrome-linux/chrome
grissiom 14695  0.0  0.3 223052  7064 ?        S    23:13   0:00 /home/grissiom/chrome-linux/chrome --type=zygote
root      1785  0.0  0.4  94120  8408 ?        S    14:48   0:14 /usr/bin/python -O /usr/share/wicd/daemon/wicd-daemon.py
grissiom  1977  0.0  0.4 503192  9080 ?        Sl   14:53   0:07 kdeinit4: kded4 [kdeinit]                      
grissiom  2137  0.0  0.4 233476  9348 ?        S    14:53   0:00 kdeinit4: kio_http_cache_cleaner [kdeinit]     
grissiom  2162  0.0  0.5 550104 10168 ?        Sl   14:53   0:00 kdeinit4: kmix [kdeinit] -session 10d7d5d3dd000128793448700000024450010_1291998249_972695
grissiom 14745  0.0  0.6 820944 11544 ?        Sl   23:13   0:00 /home/grissiom/chrome-linux/chrome --type=extension --lang=en-US --force-fieldtest=CacheSize/CacheSizeGroup_4/CacheThrottle/CacheThr
grissiom 14771  0.0  0.6 820944 11604 ?        Sl   23:13   0:00 /home/grissiom/chrome-linux/chrome --type=extension --lang=en-US --force-fieldtest=CacheSize/CacheSizeGroup_4/CacheThrottle/CacheThr
grissiom 14764  0.0  0.6 821040 11700 ?        Sl   23:13   0:00 /home/grissiom/chrome-linux/chrome --type=extension --lang=en-US --force-fieldtest=CacheSize/CacheSizeGroup_4/CacheThrottle/CacheThr
grissiom 14731  0.0  0.6 821040 11724 ?        Sl   23:13   0:00 /home/grissiom/chrome-linux/chrome --type=extension --lang=en-US --force-fieldtest=CacheSize/CacheSizeGroup_4/CacheThrottle/CacheThr
grissiom 14770  0.0  0.6 829236 11728 ?        Sl   23:13   0:00 /home/grissiom/chrome-linux/chrome --type=extension --lang=en-US --force-fieldtest=CacheSize/CacheSizeGroup_4/CacheThrottle/CacheThr
grissiom 14766  0.0  0.6 821296 12016 ?        Sl   23:13   0:00 /home/grissiom/chrome-linux/chrome --type=extension --lang=en-US --force-fieldtest=CacheSize/CacheSizeGroup_4/CacheThrottle/CacheThr
grissiom 14765  0.0  0.6 821964 12112 ?        Sl   23:13   0:00 /home/grissiom/chrome-linux/chrome --type=extension --lang=en-US --force-fieldtest=CacheSize/CacheSizeGroup_4/CacheThrottle/CacheThr
grissiom 14729  0.0  0.6 829492 12124 ?        Sl   23:13   0:00 /home/grissiom/chrome-linux/chrome --type=extension --lang=en-US --force-fieldtest=ConnCountImpact/conn_count_6/ConnnectBackupJobs/C
grissiom  2050  0.0  0.6 557216 12212 ?        Sl   14:53   0:02 /usr/bin/knotify4
grissiom 14721  0.0  0.6 825056 12628 ?        Sl   23:13   0:00 /home/grissiom/chrome-linux/chrome --type=extension --lang=en-US --force-fieldtest=ConnCountImpact/conn_count_6/ConnnectBackupJobs/C
grissiom 14742  0.0  0.6 827716 13188 ?        Sl   23:13   0:00 /home/grissiom/chrome-linux/chrome --type=extension --lang=en-US --force-fieldtest=CacheSize/CacheSizeGroup_4/CacheThrottle/CacheThr
grissiom  2173  0.0  0.6 208388 13196 ?        S    14:53   0:00 /usr/bin/python -O /usr/share/wicd/gtk/wicd-client.py
grissiom 14726  0.1  0.7 828340 14320 ?        Sl   23:13   0:00 /home/grissiom/chrome-linux/chrome --type=extension --lang=en-US --force-fieldtest=ConnCountImpact/conn_count_6/ConnnectBackupJobs/C
grissiom 14723  0.1  0.7 823756 14324 ?        Sl   23:13   0:00 /home/grissiom/chrome-linux/chrome --type=extension --lang=en-US --force-fieldtest=ConnCountImpact/conn_count_6/ConnnectBackupJobs/C
grissiom  2202  0.0  0.8 394324 15468 ?        S    14:53   0:09 /usr/bin/python /usr/share/ibus/ui/gtk/main.py
grissiom 14719  0.2  0.9 827936 17928 ?        Dl   23:13   0:00 /home/grissiom/chrome-linux/chrome --type=renderer --lang=en-US --force-fieldtest=ConnCountImpact/conn_count_6/ConnnectBackupJobs/Co
grissiom 14712  0.1  1.0 833068 20868 ?        Dl   23:13   0:00 /home/grissiom/chrome-linux/chrome --type=renderer --lang=en-US --force-fieldtest=ConnCountImpact/conn_count_6/ConnnectBackupJobs/Co
grissiom  2136  0.0  1.1 617724 21116 ?        SNl  14:53   0:13 /usr/bin/nepomukservicestub nepomukstorage
grissiom  2018  2.0  1.2 576100 23720 ?        Sl   14:53  10:09 kwin -session 10d7d5d3dd000129139800000000019590000_1291998250_36566
grissiom  2065  0.0  1.2 221496 24340 ?        Sl   14:53   0:11 /usr/libexec/mysqld --defaults-file=/home/grissiom/.local/share/akonadi//mysql.conf --datadir /home/grissiom/.local/share/akonadi/db_data/ --socket=/home/grissiom/.local/share/akonadi/db_misc/mysql.socket
grissiom  2186  0.0  1.4 575384 28108 ?        SNl  14:53   0:21 /usr/bin/nepomukservicestub nepomukstrigiservice
grissiom 14715  0.2  1.5 853996 29300 ?        Sl   23:13   0:00 /home/grissiom/chrome-linux/chrome --type=renderer --lang=en-US --force-fieldtest=ConnCountImpact/conn_count_6/ConnnectBackupJobs/Co
grissiom  2052  0.1  1.8 777060 34916 ?        Dl   14:53   0:37 kdeinit4: plasma-desktop [kdeinit]             
grissiom 14711  0.5  2.1 842688 40960 ?        Dl   23:13   0:01 /home/grissiom/chrome-linux/chrome --type=renderer --lang=en-US --force-fieldtest=ConnCountImpact/conn_count_6/ConnnectBackupJobs/Co
grissiom 14651  2.6  2.3 458080 45348 ?        Dl   23:13   0:05 /home/grissiom/chrome-linux/chrome
root      1787  3.0  2.6 156584 49896 tty7     Ss+  14:48  15:28 /usr/bin/X -br -novtswitch -quiet :0 vt7 -nolisten tcp -auth /var/run/xauth/A:0-ayJrya
grissiom 14708  0.6  2.8 871444 53732 ?        Sl   23:13   0:01 /home/grissiom/chrome-linux/chrome --type=renderer --lang=en-US --force-fieldtest=ConnCountImpact/conn_count_6/ConnnectBackupJobs/Co
grissiom  2152  0.0  2.8 961768 54440 ?        Sl   14:53   0:10 kdeinit4: krunner [kdeinit]                    
grissiom 10822  0.2  2.9 510904 57052 ?        Dl   20:47   0:20 /usr/bin/okular /home/grissiom/Everybody can use English-20100414.pdf -icon okular -caption Okular
grissiom  2141  0.1  5.2 154600 99716 ?        SNl  14:53   0:31 /usr/bin/virtuoso-t +foreground +configfile /tmp/virtuoso_kn2136.ini +wait


`free -m` shows that cache size is more than 1GB while the "free" RAM is 1xMB. After I `killall okular`, system went well again.

`top` shows kswapd0 is busy running in this condition.

This condition is reproducible (at least) on my box. If you need any other info, feel free to tell me.

Comment 1 Gu Rui 2010-12-11 16:00:33 UTC

Created attachment 39842 [details]
full output of `ps auxw --sort=rss`

Comment 2 Alan 2012-08-14 14:10:36 UTC

This is expected behaviour. If you want to bound the memory usage to keep better performance use containers or overcommit settings

Note You need to log in before you can comment on or make changes to this bug.