Memory Utilization on Linux
chockalingam
chockalingam.shanmugam at gmail.com
Thu Mar 29 08:22:42 UTC 2007
try pmem along with the command you used :
#ps -eo rss,pcpu,comm,user,pid,time,*pmem* |sort -rnk1|head -20
--lingam
On 3/29/07, Nilesh <niluforalways at yahoo.com> wrote:
>
> Hello,
>
> I would like to know how much physical memory
> consumned by each runing applications on Linux
> The ps and top are showing different outputs, I could
> not find it out , what ammount of actual memory
> consumed by each runing process on my system
>
> The scenario is :
>
> The physcial memory installed on Linux system is
> 1024MB
>
> Top command output :
>
> top - 02:11:57 up 18:48, 2 users, load average:
> 0.00, 0.00, 0.00
> Tasks: 126 total, 1 running, 125 sleeping, 0
> stopped, 0 zombie
> Cpu(s): 0.0% us, 0.2% sy, 0.0% ni, 99.8% id, 0.0%
> wa, 0.0% hi, 0.0% si
> Mem: 1026328k total, 810848k used, 215480k free,
> 47032k buffers
> Swap: 2040244k total, 0k used, 2040244k free,
> 316708k cached
>
> Free command output :
>
> Free -mt
> total used free
> shared buffers cached
> Mem: 1002 791 210
> 0 45 309
> -/+ buffers/cache: 436 565
> Swap: 1992 0 1992
> Total: 2994 791 2203
>
> The free command is showing 436MB used and 565MB is
> free but the Top command is showing 810MB is used and
> 215MB is free
> why cached is showing 309MB is it swap memory If I
> calculate it comes to 436+309+45=791 how cache is
> distributed with each application
> is cache and VIRT is same
>
> could anyone tell me how do I find out exact physical
> memory occupied by each applications.
>
> If go with ps command, is RSS is write value or
> Virtual Memory + RSS ( Resident set size) value
>
> #ps -eo rss,pcpu,comm,user,pid,time |sort -rnk1|head
> -20
>
> 242896 0.1 java 501 5294 00:01:28
> 27628 0.0 spamd root 3314 00:00:01
> 25380 0.0 spamd root 3093 00:00:00
> 23624 0.0 spamd root 3315 00:00:00
> 22656 0.0 mysqld mysql 9573 00:00:00
> 22656 0.0 mysqld mysql 5415 00:00:02
> 22656 0.0 mysqld mysql 5340 00:00:00
> 22656 0.0 mysqld mysql 5336 00:00:00
> 22656 0.0 mysqld mysql 3322 00:00:00
> 22656 0.0 mysqld mysql 3321 00:00:00
> 22656 0.0 mysqld mysql 3320 00:00:00
> 22656 0.0 mysqld mysql 3319 00:00:00
> 22656 0.0 mysqld mysql 3311 00:00:00
> 22656 0.0 mysqld mysql 3310 00:00:00
> 22656 0.0 mysqld mysql 3309 00:00:00
> 22656 0.0 mysqld mysql 3308 00:00:00
> 22656 0.0 mysqld mysql 3307 00:00:00
> 22656 0.0 mysqld mysql 3233 00:00:00
> 22656 0.0 mysqld mysql 22854 00:00:00
> 22656 0.0 mysqld mysql 22853 00:00:00
>
> Thanks
> Nilesh
>
>
>
>
>
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