Date: Mon, 26 Feb 2007 11:47:18 -0800 (PST)
From: Davide Libenzi <davidel@xmailserver.org>
To: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
cc: Ingo Molnar <mingo@elte.hu>, Ulrich Drepper <drepper@redhat.com>,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
       Linus Torvalds <torvalds@linux-foundation.org>,
       Arjan van de Ven <arjan@infradead.org>,
       Christoph Hellwig <hch@infradead.org>, Andrew Morton <akpm@zip.com.au>,
       Alan Cox <alan@lxorguk.ukuu.org.uk>, Zach Brown <zach.brown@oracle.com>,
       "David S. Miller" <davem@davemloft.net>,
       Suparna Bhattacharya <suparna@in.ibm.com>,
       Jens Axboe <jens.axboe@oracle.com>,
       Thomas Gleixner <tglx@linutronix.de>
Subject: Re: [patch 00/13] Syslets, "Threadlets", generic AIO support, v3
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On Sun, 25 Feb 2007, Evgeniy Polyakov wrote:

> Why userspace rescheduling is in order of tens times faster than
> kernel/user?

About 50 times in my Opteron 254 actually. That's libpcl's (swapcontext 
based) cobench against lat_ctx.


- Davide


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