Dave Brodin:
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> Many thanks to Scott Lambert for what I believe to be the solution to my
> load problem. It was nsswitch.conf which still had all its default
> settings when I began this troubleshooting. I had changed all the
> entries from nis to files when he mentioned it a few days ago. But he
> then suggested changing the compat setting for group and passwd to files
> also.
>
> So it now looks like:
>
> group: files
> group_files: nis
> hosts: files dns
> networks: files
> passwd: compat
> passwd_files: nis
> shells: files
> services: files
> services_files: nis
> protocols: files
> rpc: files
OK, before less-informed people start to spread urban legends, I
did all the measurements with the default nsswitch.conf file (see
below) which contains the exact same entries that were making your
system crawl.
So, while Postfix is now performing better for you, I am less
convinced that everything is kosher, unless someone can explain to
why the default nsswitch.conf was no good for your particular
system (or why it was burning up 98% CPU in kernel mode).
Wietse
group: compat
group_compat: nis
hosts: files dns
networks: files
passwd: compat
passwd_compat: nis
shells: files
services: compat
services_compat: nis
protocols: files
rpc: files
