Re: [GENERAL] free RAM not being used for page cache

2014-09-04 Thread Shaun Thomas
On 09/03/2014 07:17 PM, Kevin Goess wrote: Debian squeeze, still on 2.6.32. Interesting. Unfortunately that kernel suffers from the newer task scheduler they added to 3.2, and I doubt much of the fixes have been back-ported. I don't know if that affects the memory handling, but it might.

Re: [GENERAL] free RAM not being used for page cache

2014-09-04 Thread Kevin Goess
This is a super-interesting topic, thanks for all the info. On Thu, Sep 4, 2014 at 7:44 AM, Shaun Thomas stho...@optionshouse.com wrote: Check /proc/meminfo for a better breakdown of how the memory is being used. This should work: grep -A1 Active /proc/meminfo I suspect your inactive file

Re: [GENERAL] free RAM not being used for page cache

2014-09-03 Thread Kevin Goess
On Tue, Aug 5, 2014 at 8:27 AM, Shaun Thomas stho...@optionshouse.com wrote: On 07/30/2014 12:51 PM, Kevin Goess wrote: A couple months ago we upgraded the RAM on our database servers from 48GB to 64GB. Immediately afterwards the new RAM was being used for page cache, which is what we

Re: [GENERAL] free RAM not being used for page cache

2014-08-05 Thread Shaun Thomas
On 07/30/2014 12:51 PM, Kevin Goess wrote: A couple months ago we upgraded the RAM on our database servers from 48GB to 64GB. Immediately afterwards the new RAM was being used for page cache, which is what we want, but that seems to have dropped off over time, and there's currently actually

[GENERAL] free RAM not being used for page cache

2014-07-30 Thread Kevin Goess
A couple months ago we upgraded the RAM on our database servers from 48GB to 64GB. Immediately afterwards the new RAM was being used for page cache, which is what we want, but that seems to have dropped off over time, and there's currently actually like 12GB of totally unused RAM.

Re: [GENERAL] free RAM not being used for page cache

2014-07-30 Thread Merlin Moncure
On Wed, Jul 30, 2014 at 12:51 PM, Kevin Goess kgo...@bepress.com wrote: A couple months ago we upgraded the RAM on our database servers from 48GB to 64GB. Immediately afterwards the new RAM was being used for page cache, which is what we want, but that seems to have dropped off over time, and

Re: [GENERAL] free RAM not being used for page cache

2014-07-30 Thread Kevin Goess
Good suggestion, but nope, that ain't it: $ cat /proc/sys/vm/zone_reclaim_mode 0 On Wed, Jul 30, 2014 at 11:49 AM, Merlin Moncure mmonc...@gmail.com wrote: On Wed, Jul 30, 2014 at 12:51 PM, Kevin Goess kgo...@bepress.com wrote: A couple months ago we upgraded the RAM on our database

Re: [GENERAL] free RAM not being used for page cache

2014-07-30 Thread Scott Marlowe
On Wed, Jul 30, 2014 at 12:57 PM, Kevin Goess kgo...@bepress.com wrote: On Wed, Jul 30, 2014 at 11:49 AM, Merlin Moncure mmonc...@gmail.com wrote: On Wed, Jul 30, 2014 at 12:51 PM, Kevin Goess kgo...@bepress.com wrote: A couple months ago we upgraded the RAM on our database servers from 48GB

Re: [GENERAL] free RAM not being used for page cache

2014-07-30 Thread Kevin Grittner
Merlin Moncure mmonc...@gmail.com wrote: On Wed, Jul 30, 2014 at 12:51 PM, Kevin Goess kgo...@bepress.com wrote: A couple months ago we upgraded the RAM on our database servers from 48GB to 64GB.  Immediately afterwards the new RAM was being used for page cache, which is what we want, but

Re: [GENERAL] free RAM not being used for page cache

2014-07-30 Thread Scott Marlowe
On Wed, Jul 30, 2014 at 1:05 PM, Kevin Grittner kgri...@ymail.com wrote: Merlin Moncure mmonc...@gmail.com wrote: On Wed, Jul 30, 2014 at 12:51 PM, Kevin Goess kgo...@bepress.com wrote: A couple months ago we upgraded the RAM on our database servers from 48GB to 64GB. Immediately afterwards