This is Websphere. What would cause cache to grow constantly, from an
application perspective. What did you see in your application?
Rich Smrcina
<[EMAIL PROTECTED]
o.com> To
Sent by: Linux on [EMAIL PROTECTED]
390 Port cc
<[EMAIL PROTECTED]
IST.EDU> Subject
Re: Under what conditions will
Linux start releasing Cache?
07/28/2004 09:39
AM
Please respond to
Linux on 390 Port
<[EMAIL PROTECTED]
IST.EDU>
What is this machine used for? 110 MB of cache is pretty much a waste
of storage. If the machine eats into all (or most) of that before it
finally croaks, then you have a memory hog or leak somewhere.
I've seen that happen with WebSphere and it turned out to be an
application problem.
The cache will slowly get released to a certain point, then paging will
begin and the paging/cacheing dance will begin. When the page device
fills and the cache is gone then your up the creek...
On Wed, 2004-07-28 at 09:25, James Melin wrote:
> I've got a linux guest that is pushing the wall, 17 megs free and
dropping.
> Swapping is going to be inevitable. The problem is that the memory usage
> growth is slow, and that cache grows to 110 meg before we start to
approach
> the wall. Will SLES8 start to release or clean the cache before swapping
> becomes rampant?
>
> <vent_spleen>
>
> Since there seems to be no way to control the cache in SLES8, which
really
> sucks since, in our situation, it is caching unimportant things. None of
> the application data is local. If there are any of the Linux Kernal
> developers monitoring this list, add my voice to those that are telling
you
> that not being able to control cache behavior is a really frustrating
when
> working in a virtualized environment where you are trying to divide
limited
> resources amongst many guests. The Cache behaviour is the biggest
> non-application pig that I can see.
>
> Just my 2 cents
>
> </vent_spleen>
>
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--
Rich Smrcina
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