Fwd: Re: memory usage - dentry_cache

Marcin Kowalski
2001-04-11T11:37:08Z

To possbile answer my own question:
if I do a can on /proc/slabinfo I get on the machine with "MISSING" memory:
----
slabinfo - version: 1.1 (SMP)
--- cut out
inode_cache 920558 930264 480 116267 116283 1 : 124 6
--- cut out
dentry_cache 557245 638430 128 21281 21281 1 : 252 126

while on an equivalent server I get
----
labinfo - version: 1.1 (SMP)

inode_cache 70464 70464 480 8808 8808 1 : 124 62

dentry_cache 72900 72900 128 2430 2430 1 : 252 126

----

Notice the huge size of the inode and dentry caches. bareing in mind that
both have 85GIG Reiserfs Home filesystems.
The first machine has a many of directories containing many thousands for
files.
BTW could anyone enlighten me to the exact meaning of the values in the
slabinfo gile.

Regards
MarCin

> I can use "ps" to see memory usage of daemons and user programs.
> I can't find any memory information of kernel with "top" and "ps".
>
> Do you know how to take memory usage information of kernel ?
> Thanks for your help.

Regarding this issue, I have a similar problem if I do a free on my system I
get :
--- total used free shared buffers cached
Mem: 1157444 1148120 9324 0 22080 459504
-/+ buffers/cache: 666536 490908
Swap: 641016 19072 621944
---
Now what I do a ps there seems no way to accound for the 500mb + of memory
used. No single or group of processes uses that amount of memory. THis is
very disconcerting, coupled with extremely high loads when cache is dumped to
disk locking up the machine makes me want to move back to 2.2.19 from 2.4.3.

I would also be curious to see how the kernel is using memory...

TIA
MARCin

--
-----------------------------
Marcin Kowalski
Linux/Perl Developer
Datrix Solutions
Cel. 082-400-7603
***Open Source Kicks Ass***
-----------------------------
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

-------------------------------------------------------

--
-----------------------------
Marcin Kowalski
Linux/Perl Developer
Datrix Solutions
Cel. 082-400-7603
***Open Source Kicks Ass***
-----------------------------