Re: [Sheflug] memory usage in linux

["David Willington" <david.willington@xxxxxxxxxxxx>]

>
> It's virtually impossible to get an absolute value for the RAM use
> simply because it depends on how you define "use".
>
>>From what you've said about your situation, it doesn't really sound like
> a RAM / tuning thing. If 100 people crash the system, you have a much
> more serious problem, and tweaking the config isn't likely to solve
> things I don't think. I doubt AD auth is causing issues (that's
> basically just LDAP), it sounds to me like you have a pretty fundamental
> networking issue/.
Thanks for the explanation. Everything you've said ties in with what I've
been reading, and it's reassuring that I seem to be getting to understand
the whole picture. I'd suspected what you've said about the AD
integration. As for the networking issue, you're almost certainly right.
I'm maintaining a single linux box on a network that's flakey but over
which I've not control. I've no idea how it's put together. I'm not sure
anyone does! The 100 user crash was caused by 4 classes all logging on at
the start of the lesson. I'm advising that they get pupils to log on in
groups (maybe half a class at a time) and where possible try to get
teachers to stagger logons between classes so they're not all logging on
simultaneously. Hopefully this'll avoid the bottleneck. The output of free
is
             total       used       free     shared    buffers     cached
Mem:       3116476    1928016    1188460          0     210076    1423932
-/+ buffers/cache:     294008    2822468
Swap:      2048276       7064    2041212

with no-one using the system

Thanks

David
>
> Cheers,
>
> Alex.
>
>
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>



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 GNU - The choice of a complete generation