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RE: [ic] memory usage
> > > In analyzing some speed problems, redhat linux indicates that the
> > > interchange process itself is using 204mb of memory. We have a catalog
> > > of over 100,000 items. Is this typical? Could some of the speed issues
> > > we have be attributed to having a system with 512mb of total memory and
> > > each interchange instance requiring 204mb (granted that a good chunk
> > > appears to be shared)?
> > >
> > Are you sure that's 204MB and not 20.4MB? The memory usage you are
> > seeing would not be typical. How are you measuring that amount?
> >
> I run the "top" utility in redhat and the memory clearly indicates 204M
> where the next largest process has a value such as 12500 for something like
> mysqld. I'm assuming values are in units of 'K' so mysqld is using 12.5mb
> with interchange at 204mb. I'd like to see what other people have as a
> value. I do have 150,000 items in the products table. Is interchange caching
> data?
>
Interchange doesn't cache resultsets or any other dynamic data between
page requests, other than small things such as database connection
handles, so that shouldn't be an issue.
As a comparison, here are my largest interchange, httpd and mysql
processes, as reported by top and then pasted here:
PID USER PRI SIZE TRS RSS SHARE STAT %CPU %MEM TIME COMMAND
19634 centrewo 0 25252 636 24M 15032 S 0.0 1.6 0:08 interchange
20712 nobody 0 5788 808 5396 4884 S 0.0 1.3 0:00 httpd
671 mysql 0 4380 1168 4076 1112 S 0.0 0.2 0:00 mysqld
It looks like both your interchange and mysql processes are using
around 10x the memory that mine do, which is why I asked whether
you meant 20.4MB rather than 204MB.
I'm at a loss to explain how your interchange process could sustain
a size of 204MB, unless you are keeping your products table as an
'in-memory' table, or are running thousands of shops. Even then,
your mysqld seems to be using more memory than it is entitled to.
Can anyone else shed some light on this?
--
_/ _/ _/_/_/_/ _/ _/ _/_/_/ _/ _/
_/_/_/ _/_/ _/ _/ _/ _/_/ _/ K e v i n W a l s h
_/ _/ _/ _/ _/ _/ _/ _/_/ kevin@cursor.uk.com
_/ _/ _/_/_/_/ _/ _/_/_/ _/ _/
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