[ale] Disk performance

[Alex Carver]

On 8/24/2013 18:03, Ed Cashin wrote:
> On Sat, Aug 24, 2013 at 8:38 PM, Alex Carver <agcarver+ale at acarver.net>wrote:
> ...
>
>> Well, looks like mostly still working although it has a memory leak
>> somewhere.  The free memory (according to top) is slowly dropping.  It went
>> from 380MB to 365MB in about two hours so 15MB went somewhere during that
>> time.  Probably one of the cron jobs or apache, just don't know which yet.
>>
>
> If you haven't already, you might check whether that memory is simply being
> used to cache stuff.  Linux aggressively caches blocks from disk in pages
> of memory, which is usually a convenience.

Good point, I'll look at that later and see what's up.  Although this 
has led me to investigate one of my other machines (a P2) to check its 
drives.  The drives are fine, they're just running a bit slow (20MB/s) 
though I'm not too concerned since it's a low volume mail server (and 
certainly better than the 200 KB/s I was getting on the troublesome 
machine).