Messages in this thread | | | Date | Fri, 12 Apr 1996 16:57:05 -0400 | From | Robert L Krawitz <> | Subject | Fast Pentium memcpy stuff |
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First off, would everyone who uses this please send me email? I'd like to set up a mailing list so I don't have to bother everyone on linux-kernel who's perfectly satisfied with slow memcpy performance.
Secondly, I've started having problems with it (at least in the routine that copies from system to user space; the others seem fine). Specifically, make -j gets a lot of corruption (bogus source files) in some of the newer kernels that didn't happen even as recently as the low 1.3.8x's (I only got the usual sig11's that I also got without the fast copy). This is only an issue with the _tofs routine; if I disable that one and use the others (_fromfs, "regular" memcpy, and zero_chunk) everything's fine (although read performance from the filesystem drops a lot). I'd like someone else to do this to see if this problem is reproducible or happens only on my system.
-- Robert Krawitz <rlk@tiac.net> http://www.tiac.net/users/rlk/
Member of the League for Programming Freedom -- mail lpf@uunet.uu.net Tall Clubs International -- tci-request@aptinc.com or 1-800-521-2512
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