[OpenAFS] Slow loading of virtually hosted web content
Ken Hornstein
kenh@cmf.nrl.navy.mil
Fri, 19 Nov 2021 21:23:19 -0500
>- most of the community knowledge about tuning, both for fileservers and
> cache managers, has been recorded in various workshop presentations over
> the years. That should include what parameters to tune and how to
> determine whether changes are helping (or hurting)
You know ... I've attended those workshop presentations for a very long
time, and maybe my memory is going. But here's what I vaguely remember:
- AFS performance tuning is a "black art". My interpretation of this is
there is no obvious answer to make things better.
- The various tuning strategies seem to be "I tried adjusting <X>
and it helped me, and when I adjusted <Y> it made things worse". And
X and Y seem to be non-obvious and vary depending on operating
system level, version of OpenAFS, and a mixture of quantum randomness.
So I think looking at the workshop presentations will ... not be useful.
--Ken