[OpenIndiana-discuss] /hipster: question about /proc

[Predrag Zečević - Technical Support Analyst]

Hi all,

I got today alert (actually blinking TimeSlider icon) that root FS is 
more than 70% in use (that is my setup).

Went to check what occupies so much space, and found:
$ pfexec du -sch /*
...
76G     /proc

I was confused, so:
$ ps -Zef| grep 22973
   global    mysql 22973     1   0   Sep 27 ?         419:56 
/opt/MySQL/5.7_32/bin/mysqld --user=mysql --datadir=/var/MySQL/data/5.7 
--pid-f

Well, that is self compiled 32bit version of MySQL server (we need it 
for some reason)...

What is using so much memory (top shows almost nothing)?

After server bouncing, I got 4GB usage for MySQL PID /proc space, which 
is normal.

Maybe my compilation leaks memory? Or MySQL setup needs tweak (some tmp 
files created in memory)?

I am just curious if someone else spotted similar problem.
Also, I know that I can truss process - but what if that generates 
another big file (I cannot seat and watch truss output)?

Regards.

P.S: rpool is installed to 256GB SSD drive, and /opt and /var/MySQL are 
located on HD zfs file systems
-- 
Predrag Zečević
Technical Support Analyst
2e Systems GmbH

tel: +49 - 6196 - 95058 - 15
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e-mail: predrag.zecevic at 2e-systems.com

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