Re: devpts mounts too slowly

[Alexey Vlasov <renton@renton.name>]

On Tue, Jun 09, 2009 at 05:02:59PM -0700, H. Peter Anvin wrote:

> A quick script seems to confirm that the time starts creeping up as the
> number of mount points increase; on my Core i7 system the 10000th mount
> takes around 50 ms whereas the early instances are submillisecond, and
> the increase *seems* to be O(n log n) or thereabouts -- slightly
> superlinear but not a good fit for a power law.

I have prepared a new machine for testing, and I don't see any slowdown
by mounting devpts.
Total mounts on it:
# wc -l /proc/mounts
153481 /proc/mounts
# fgrep -c devpts /proc/mounts
10231

On my other servers there're slowdown already by this number of:
# wc -l /proc/mounts
49889 /proc/mounts
# fgrep -c devpts /proc/mounts
3323

But the first box is totally empty, others are in use, may be this
matters?

-- 
BRGDS. Alexey Vlasov.