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SubjectRe: devpts mounts too slowly
On Wed, 03 Jun 2009 14:28:56 -0700
"H. Peter Anvin" <hpa@zytor.com> wrote:

> Alexey Vlasov wrote:
> > Hi.
> >
> > In comparison with bind/proc mounting it takes a lot more time mounting
> > devpts. Is it possible to somehow accelerate the process? Now there are
> > about 5k devpts mounting, it already took 20 minutes, further will take
> > even more time.
> >
> > # time mount -n -i -t devpts none /home/staff/.server-1/dev/pts
> > real 0m0.295s
> > user 0m0.000s
> > sys 0m0.288s
> >
>
> A profile would be handy here. There is no sensible reason for this to
> that 0.3 seconds. This might be RCU-epoch related?
>

It seems OK here.

akpm2:/home/akpm/xx# time mount -n -i -t devpts none /tmp/pts
mount -n -i -t devpts none /tmp/pts 0.00s user 0.00s system 0% cpu 0.002 total



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