Messages in this thread |  | | From | Nicholas Knight <> | Subject | Re: Encrypted Swap | Date | Sat, 18 Aug 2001 03:24:28 -0700 |
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On Saturday 18 August 2001 02:52 am, Eric W. Biederman wrote: > Dan Hollis <goemon@anime.net> writes: > > On 17 Aug 2001, Eric W. Biederman wrote: > > > Clearing memory on most machines takes a 1s or less. Think of > > > memory fill rates at the 800MB/s level. Most BIOS's seem to clear > > > some of the memory but I haven't read their code to see what they > > > are doing. > > > > Ive measured rates far lower than that, at least for SDRAM. > > Hmm. The numbers were off the top of my head and I've been messing > with DDR SDRAM quite a bit so I may have doubled it. Hmm. > > Nope. I was remember something close to the typical streams numbers > on an Athlon with DDR SDRAM. Since those are read-modify-write > numbers they should be close to the write numbers for normal SDRAM. > > With a PII/PIII and PC100 SDRAM I have measured about 640 MB/s writes. >
I'm not sure where you're pulling these numbers from, but being a hardcore FPS gamer, I can tell you from experience, PC100 SDRAM does NOT hit 640MB/sec! Esspecialy not on a PII! PC100 SDRAM on my current 800Mhz non-tbird Athlon currently peaks near 250MB/sec - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.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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