Re: XInetd

[Matt Drew <mdrew redhat com>]

Bill,

Bugzilla this, if it hasn't been submitted already.

Matt


On Thu, 12 Apr 2001, Bill Farrell wrote:

> Hi Everyone:
>
> I'm wondering about xinetd for RH7.  I just recently bought and installed
> RH7 (the Pro version) and installed it on a machine that was previously
> running RH6.2.
>
> After a wee while with the editor rearranging paths (since /etc now has a
> lot of configs in subdirectories) it looked great and I thought I was about
> ready to put it into service.  I really like the new organisation of
> configs...being in subdirectories, one can easily document-as-you-go.
>
> Then I noticed something weird.  I had two machines, one next to the other
> and even next to one another in the network hub.  From the RH6.2 machine to
> the RH7 machine, pings were running about the expected 0.5ms mark.  Pings
> from RH7 to the RH6.2 machine were running around 300-500ms.  Telnet also
> took an exhorbitant time to connect and performed lackadaisically, even with
> one user connected (me).
>
> Of course, I'm not at all familiar with the new xinetd and wonder if there's
> a tuning issue involved.
>
> All 20-some of my servers are using a DEC RLT8139-based NIC (which RH seems
> to love).  I wound up taking that particular server BACK to 6.2 where it
> performs up-to-snuff.  All the network-related problems disappeared.
>
> I haven't seen any benches or mentions of xinetd performance as opposed to
> inetd performance.  RH7 stays on the shelf until I can figure out why xinetd
> performs so awfully.
>
> I'm serving some 40,000,000 hits a week and each server has to be
> johnny-on-the-spot, tuned and performing well.  Until I get more information
> I'm having to consider RH7.0 a Bad Idea(tm), but I don't want to get so far
> behind or releases I wind up in Never-Catch-Up Land.  Has anyone else got an
> idea of why the two releases perform network functions so differently?  Any
> tuning suggestions?  Any ideas?
>
> Best regards,
> Bill
>
>
>
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-- 
Matt Drew
Peer Review team lead and Bughunter
Red Hat Consumer Services