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Open Source and information security mailing list archives
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Date: Wed, 10 Jun 2009 13:51:25 -0700 From: "H. Peter Anvin" <hpa@...or.com> To: Andrew Morton <akpm@...ux-foundation.org> CC: Ray Lee <ray-lk@...rabbit.org>, renton@...ton.name, linux-kernel@...r.kernel.org, linux-fsdevel <linux-fsdevel@...r.kernel.org> Subject: Re: devpts mounts too slowly Andrew Morton wrote: > > hm, OK. > > I've now mounted 15000 devpts's and still no slowdown is evident. I ran my test script, mounting ramfs, with n=100000, and well, gave up since it hadn't gotten any further than 57000 or so overnight. At that time each individual mount was taking several seconds. Graphing the delays seem to indicate O(n^2) behavior. umounts do not appear affected; each umount still take negible time. -hpa -- 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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