[nycbug-talk] Re: network strangeness (resource starvation?)
spork at bway.net
Tue Aug 2 22:08:43 EDT 2005
On Tue, 2 Aug 2005, Jed Davis wrote:
> Charles Sprickman <spork at bway.net> writes:
>> One of the ongoing symptoms is that ssh sessions to the box will start
>> *dropping* characters when udp traffic is really high. Even after we
>> solved the problem of outgrowing the state table, the problem still
> That's... seriously weird. Even if the TCP is somehow not working
> correctly, SSH has its own cryptographic integrity/authenticity check
> on top of that, so characters _really_ shouldn't be getting silently
> dropped there. Maybe the loss is in the tty layer?
I'm trying to dig up more now. The thing booted again this afternoon.
It's not even doing very much beyond Nagios at this point. tty layer,
hmmm... I'm just having a hard time wrapping my head around what's
different with this one box.
I tried to get a crashdump, but even though I have 2GB RAM and 2GB swap,
dumpon says "dumpon: sysctl: kern.dumpdev: No space left on device".
> (let ((C call-with-current-continuation)) (apply (lambda (x y) (x y)) (map
> ((lambda (r) ((C C) (lambda (s) (r (lambda l (apply (s s) l)))))) (lambda
> (f) (lambda (l) (if (null? l) C (lambda (k) (display (car l)) ((f (cdr l))
> (C k))))))) '((#\J #\d #\D #\v #\s) (#\e #\space #\a #\i #\newline)))))
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