innd resource performance question

Jennifer Luisi jlui at ats.rochester.edu
Mon Sep 22 21:51:41 UTC 2003


Very cool!  Thanks!!!


Jen


On Mon, 22 Sep 2003, Russ Allbery wrote:

> Jennifer Luisi <jlui at ats.rochester.edu> writes:
>
> > Hmm, my db dir looks like this:
>
> > total 305487
> > -rw-rw-r--    1 news     news       252787 Sep 22 03:06 active
> > -rw-rw-r--    1 news     news       252734 Jul 24 10:13 active.old
> > -rw-r--r--    1 news     news           84 Jul 24 10:13 active.times
> > -rw-rw-r--    1 news     news     248833806 Sep 22 17:36 history
> > -rw-rw-r--    1 news     news          108 Sep 22 17:36 history.dir
> > -rw-rw-r--    1 news     news     37570200 Sep 22 06:00 history.hash
> > -rw-rw-r--    1 news     news     25046800 Sep 22 04:45 history.index
> > drwxr-xr-x    2 root     root           96 May 29 16:08 lost+found
> > -rw-r--r--    1 news     news          333 May 28 16:21 newsgroups
>
> So there's about 60MB of memory-mapped files there, which is probably why
> you're seeing the memory usage that you're seeing.  Chances are, this
> isn't actually much of an impact on the performance of the system.
>
> The size of your history file seems fairly typical to me.  The history
> file on my reader system, which only has one feed and only sees articles I
> actually carry, is about 380MB.
>
> > Old articles are automagically expired out of history by the expire.ctl
> > setting when news.daily runs, right?  My expire.ctl says: /remember/:7.
>
> Right.
>
> > I don't know how to check on a memory-mapped file size, though it seems
> > like a useful concept.  Any quick pointers?
>
> It's very platform-specific.  On Solaris, /usr/proc/bin/pmap will give
> that information.  It looks like Linux also has the same command.
>
> --
> Russ Allbery (rra at stanford.edu)             <http://www.eyrie.org/~eagle/>
>
>     Please send questions to the list rather than mailing me directly.
>      <http://www.eyrie.org/~eagle/faqs/questions.html> explains why.
>
>

-------------------------------------------------------
Jennifer Luisi				University of Rochester
Systems Administrator			Rochester, NY
jennifer.luisi at rochester.edu		(585) 275-9106
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