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Message-ID: <2c0942db0906091630l1cc79647h8689e9e929ed1bba@mail.gmail.com> Date: Tue, 9 Jun 2009 16:30:31 -0700 From: Ray Lee <ray-lk@...rabbit.org> To: Andrew Morton <akpm@...ux-foundation.org> Cc: "H. Peter Anvin" <hpa@...or.com>, renton@...ton.name, linux-kernel@...r.kernel.org Subject: Re: devpts mounts too slowly On Tue, Jun 9, 2009 at 4:19 PM, Andrew Morton<akpm@...ux-foundation.org> wrote: > On Wed, 03 Jun 2009 14:28:56 -0700 > "H. Peter Anvin" <hpa@...or.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 I read the Original Post as that test being performed with 5k /dev/pts already mounted. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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