Re: bad performance on irix

lamigo(at)atc(dot)unican(dot)es ("Luis Alberto Amigo Navarro") writes:

> we're running on sgi powerchallenge, 8 r10000 4-way smp, and we're
> getting bad performance from postgres, throughput increases from 1
> to 5 streams, but from 5 and above there is no further increase,
> performance analysis show high sleep waiting for resources

IIRC there is a bottleneck on calls to sleep() or similar on IRIX
SMP. All requests are dealt with on just one of the CPUs. I don't
recollect whether there is a way to work around that or whether
programs need to be rewritten.
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