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Date: Thu, 1 Mar 2007 13:34:23 +0100 From: Ingo Molnar <mingo@...e.hu> To: Evgeniy Polyakov <johnpol@....mipt.ru> Cc: Pavel Machek <pavel@....cz>, Theodore Tso <tytso@....edu>, Linus Torvalds <torvalds@...ux-foundation.org>, Ulrich Drepper <drepper@...hat.com>, linux-kernel@...r.kernel.org, Arjan van de Ven <arjan@...radead.org>, Christoph Hellwig <hch@...radead.org>, Andrew Morton <akpm@....com.au>, Alan Cox <alan@...rguk.ukuu.org.uk>, Zach Brown <zach.brown@...cle.com>, "David S. Miller" <davem@...emloft.net>, Suparna Bhattacharya <suparna@...ibm.com>, Davide Libenzi <davidel@...ilserver.org>, Jens Axboe <jens.axboe@...cle.com>, Thomas Gleixner <tglx@...utronix.de> Subject: Re: [patch 00/13] Syslets, "Threadlets", generic AIO support, v3 * Evgeniy Polyakov <johnpol@....mipt.ru> wrote: > Document Length: 3521 bytes > Concurrency Level: 8000 > Time taken for tests: 16.686737 seconds > Complete requests: 80000 > Failed requests: 0 > Write errors: 0 > Total transferred: 309760000 bytes > HTML transferred: 281680000 bytes > Requests per second: 4794.23 [#/sec] (mean) > Concurrency Level: 8000 > Time taken for tests: 12.366775 seconds > Complete requests: 80000 > Failed requests: 0 > Write errors: 0 > Total transferred: 317047104 bytes > HTML transferred: 288306522 bytes > Requests per second: 6468.95 [#/sec] (mean) i'm wondering - how can the 'Total transferred' and 'HTML transferred' numbers be different? Since document length is 3521, and the number of requests is 80000, the correct 'HTML transferred' is 281680000 - which is the epoll result. The kevent result shows more bytes transferred, which suggests that the kevent loop is probably incorrect somewhere. this might be some benign thing, but the /first/ thing you /have to/ do before claiming that 'kevent is 25% faster than epoll' is to make sure the results are totally reliable. Ingo - 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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