Date: Thu, 13 Dec 2007 19:22:56 -0800 (PST) From: Shantanu Ghosh <shantanu_ghosh@yahoo.com> To: Erich Dollansky <oceanare@pacific.net.sg>, Nash Nipples <trashy_bumper@yahoo.com> Cc: freebsd-performance@freebsd.org Subject: Re: freebsd vs linux: performance problem Message-ID: <150023.72900.qm@web54501.mail.re2.yahoo.com> In-Reply-To: <4761E76D.6090202@pacific.net.sg>
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--- Erich Dollansky <oceanare@pacific.net.sg> wrote: > Hi, > > Nash Nipples wrote: > > sounds like a power unit problem. try to switch them and repeat. > > hey, in the next step you tell him that the MTU is set wrongly. > > > > > > Now, in simple memory access operations, I see the freebsd system > being > > noticably slower than the linux system. A simple C program that > copies > > As already mentioned, are both systems working as 32 or 64 bit > systems? Both are working as 64 bit systems. > > > from one memory buffer to another, when executed in a loop executes > > between 10-30% slower on freebsd, as compared to linux. The > assembly > > code of the program used for testing is identical in both the > cases. > > Don't you call memcpy? Well, I first did - then I wrote a function to do the same, just to make sure that the code executed is exactly the same in both the cases. The difference was there both when using memcpy, and when using the replacement function. > > Erich > _______________________________________________ > freebsd-performance@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-performance > To unsubscribe, send any mail to > "freebsd-performance-unsubscribe@freebsd.org" > ____________________________________________________________________________________ Never miss a thing. Make Yahoo your home page. http://www.yahoo.com/r/hs
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