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SubjectRe: Linux V2.1.128 localhost performance
On Thu, 19 Nov 1998, Tigran Aivazian wrote:

> On Wed, 18 Nov 1998, Richard B. Johnson wrote:
> ...
> > One can't `ping -f localhost` anymore either. Is this a bug or a
> > feature? If a feature, was X considered?
> ...
> Richard,
> I thought X uses PF_UNIX (UNIX domain) sockets rather than TCP to localhost
> (unless one is insisting by doing DISPLAY=localhost:0.0), so although
> performance degradation is always bad, X is not under any threat.

Yes you are correct.

> I also noticed 98% packet loss when doing ping -f localhost on 2.1.127.
> Regards,
> Tigran.
I noticed this in testing my new dual Pentium 400MHz machine. I have
some network benchmark tools. To see the throughput without using
the adapter and wire, i,e., see how the code itself works, I have
been benchmarking localhost. I think the new "feature" makes Network
Software performance un-testable.

Dick Johnson
Penguin : Linux version 2.1.128 on an i686 machine (400.59 BogoMips).
Warning : It's hard to remain at the trailing edge of technology.

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