Re: Problems with scheduler

[brtmac@ksu.ksu.edu]

Verily did Andy Poling say on April 21, 1995:

>The same system which processes the 70k msgs also has 6000-some passwd 
>file entries.  ZMailer has caching built into the database stuff, and it 
>considers the passwd file a database.
>
>I had to turn off this caching, though, to ensure that new passwd file
>entries got used (we update the passwd file at arbitrary times).
>
>I think that our passwd file is a pretty permanent part of the OS disk 
>cache...

What seemed to be killing the IPC was just the time it took to parse
the passwd file for a particular userid.  The passwd data was cached
in memory, but it just couldn't scan through it fast enough.

Can zmailer be told, via a signal or some such mechanism, to flush it's
database cache?  That way when you update the passwd file (which is at
most, every 15 minutes here) the changes will take effect?

Brett McCoy, UNIX Systems Administrator
Computing and Network Services, Kansas State University,  Manhattan KS  66506
vox: (913) 532-4908 / fax: (913) 532-5914 / e-mail: brtmac@ksu.ksu.edu
PGP Key available on request