devil-linux-develop

[Devil-linux-develop] Memory leak?

[Serge L. <se...@nn...>]

Dear Sirs.

  I'm using DL 1.2 (2.4 kernel) loaded from USB-drive.
The small cron script writes output of procinfo to hard drive mounted to
/mnt/ every 5 min.

  There are base system processes that are running:
> root@rsf:~ # ps -A
>   PID TTY          TIME CMD
>     1 ?        00:00:04 init
>     2 ?        00:00:00 keventd
>     3 ?        00:00:00 ksoftirqd_CPU0
>     4 ?        00:00:00 kswapd
>     5 ?        00:00:00 bdflush
>     6 ?        00:00:00 kupdated
>    10 ?        00:00:00 khubd
>    16 ?        00:00:00 kcopyd
>    38 ?        00:00:00 usb-storage-0
>    39 ?        00:00:00 scsi_eh_0
>   106 ?        00:00:00 loop0
>   147 ?        00:00:00 devfsd
>   164 ?        00:00:00 kapmd
>   426 ?        00:00:00 syslog-ng
>   476 ?        00:00:00 sshd
>   520 vc/2     00:00:00 agetty
>   521 vc/3     00:00:00 agetty
>   522 vc/4     00:00:00 agetty
>   523 vc/5     00:00:00 agetty
>   524 vc/6     00:00:00 agetty
>   525 vc/8     00:00:00 procinfo
>   526 vc/7     00:00:00 iptstate
>   925 ?        00:00:00 cron
>  2200 vc/1     00:00:00 agetty
>  4707 ?        00:00:00 sshd
>  4709 pts/1    00:00:00 bash
>  4818 pts/1    00:00:00 ps

But every time procinfo is done I can see decreasing free memory (~ 4k
every time).

> Memory:      Total        Used        Free      Shared     Buffers      Cached
> root@rsf:~ # grep "Mem:" /mnt/live
> Mem:        515040      126808      388232           0       19788       72880
> Mem:        515040      126812      388228           0       19788       72884
> Mem:        515040      126816      388224           0       19788       72888
> Mem:        515040      126820      388220           0       19788       72892
> Mem:        515040      126828      388212           0       19788       72900
> Mem:        515040      126832      388208           0       19788       72904
> Mem:        515040      126836      388204           0       19788       72908
> Mem:        515040      126840      388200           0       19788       72912
> Mem:        515040      126848      388192           0       19788       72920
> Mem:        515040      126852      388188           0       19788       72924

 Is it memory leak?

-- 
Best regards,
 Serge                          mailto:se...@nn...

Re: [Devil-linux-develop] Memory leak?

[Heiko Z. <he...@zu...>]

> Dear Sirs.
>
>   I'm using DL 1.2 (2.4 kernel) loaded from USB-drive.
> The small cron script writes output of procinfo to hard drive mounted to
> /mnt/ every 5 min.
>
>   There are base system processes that are running:
>> root@rsf:~ # ps -A
>>   PID TTY          TIME CMD
>>     1 ?        00:00:04 init
>>     2 ?        00:00:00 keventd
>>     3 ?        00:00:00 ksoftirqd_CPU0
>>     4 ?        00:00:00 kswapd
>>     5 ?        00:00:00 bdflush
>>     6 ?        00:00:00 kupdated
>>    10 ?        00:00:00 khubd
>>    16 ?        00:00:00 kcopyd
>>    38 ?        00:00:00 usb-storage-0
>>    39 ?        00:00:00 scsi_eh_0
>>   106 ?        00:00:00 loop0
>>   147 ?        00:00:00 devfsd
>>   164 ?        00:00:00 kapmd
>>   426 ?        00:00:00 syslog-ng
>>   476 ?        00:00:00 sshd
>>   520 vc/2     00:00:00 agetty
>>   521 vc/3     00:00:00 agetty
>>   522 vc/4     00:00:00 agetty
>>   523 vc/5     00:00:00 agetty
>>   524 vc/6     00:00:00 agetty
>>   525 vc/8     00:00:00 procinfo
>>   526 vc/7     00:00:00 iptstate
>>   925 ?        00:00:00 cron
>>  2200 vc/1     00:00:00 agetty
>>  4707 ?        00:00:00 sshd
>>  4709 pts/1    00:00:00 bash
>>  4818 pts/1    00:00:00 ps
>
> But every time procinfo is done I can see decreasing free memory (~ 4k
> every time).
>
>> Memory:      Total        Used        Free      Shared     Buffers
>> Cached
>> root@rsf:~ # grep "Mem:" /mnt/live
>> Mem:        515040      126808      388232           0       19788
>> 72880
>> Mem:        515040      126812      388228           0       19788
>> 72884
>> Mem:        515040      126816      388224           0       19788
>> 72888
>> Mem:        515040      126820      388220           0       19788
>> 72892
>> Mem:        515040      126828      388212           0       19788
>> 72900
>> Mem:        515040      126832      388208           0       19788
>> 72904
>> Mem:        515040      126836      388204           0       19788
>> 72908
>> Mem:        515040      126840      388200           0       19788
>> 72912
>> Mem:        515040      126848      388192           0       19788
>> 72920
>> Mem:        515040      126852      388188           0       19788
>> 72924
>
>  Is it memory leak?

'Cached' is increasing, while 'used' is increasing in about the same
amount. So this is OK.
(Or am I missing something with my hangover....)

-- 
Regards
  Heiko Zuerker
  http://www.devil-linux.org

Re: [Devil-linux-develop] Memory leak?

[Friedrich L. <fl...@fl...>]

Heiko Zuerker wrote on 30.07.2004 16:10 MET:

>>But every time procinfo is done I can see decreasing free memory (~ 4k
>>every time).
>>
>>
>>>Memory:      Total        Used        Free      Shared     Buffers
>>>Cached
>>>root@rsf:~ # grep "Mem:" /mnt/live
>>>Mem:        515040      126808      388232           0       19788
>>>72880
>>>Mem:        515040      126812      388228           0       19788
>>>72884
>>>Mem:        515040      126816      388224           0       19788
>>>72888
>>>Mem:        515040      126820      388220           0       19788
>>>72892
>>>Mem:        515040      126828      388212           0       19788
>>>72900
>>>Mem:        515040      126832      388208           0       19788
>>>72904
>>>Mem:        515040      126836      388204           0       19788
>>>72908
>>>Mem:        515040      126840      388200           0       19788
>>>72912
>>>Mem:        515040      126848      388192           0       19788
>>>72920
>>>Mem:        515040      126852      388188           0       19788
>>>72924
>>
>> Is it memory leak?
> 
> 
> 'Cached' is increasing, while 'used' is increasing in about the same
> amount. So this is OK.

I'd say the same.

May I refer to
   http://www.aplawrence.com/Bofcusm/2118.html

You may want to run 'free' to take a look at the memory usage. See also

http://www.redhat.com/docs/manuals/linux/RHL-7.3-Manual/custom-guide/s1-sysinfo-memory-usage.html

-- 
MfG / Regards
Friedrich Lobenstock
____________________________________________________________________
Friedrich Lobenstock                       Linux Services Lobenstock
URL: http://www.lsl.at/                         Email: fl...@fl...
____________________________________________________________________

Re[2]: [Devil-linux-develop] Memory leak?

[Serge L. <se...@nn...>]

Dear  Friedrich, Heiko .

>> 'Cached' is increasing, while 'used' is increasing in about the same
>> amount. So this is OK.

FL> I'd say the same.

Thank all of you for your answers.
I was at vacation and couldn't answer in time.
I've looked through the links - thank you. Evidently there is no
memory leak.
I'm very glad! 8-)

Thank you once more!


-- 
Best regards,
 Serge                            mailto:se...@nn...