Date: Fri, 4 Apr 1997 16:16:11 +0700 (OSD) From: Eugeny Kuzakov <kev@l321.omsk.net.ru> To: "Alexander V. Lukyanov" <lav@video.yars.free.net> Cc: bugs@freebsd.org Subject: Re: sscanf is slow on 2.2.1 Message-ID: <Pine.BSD.3.95.970404161401.26348B-100000@l321.omsk.net.ru> In-Reply-To: <199704031521.TAA03420@video.yars.free.net>
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On Thu, 3 Apr 1997, Alexander V. Lukyanov wrote:
> The program below works awfully slowly on FreeBSD 2.2.1, and quite normally
> on Solaris 2.5, Linux, Digital Unix etc.
>
> Linux on i586 100Mhz:
> real 0m26.020s
> user 0m24.240s
> sys 0m0.400s
>
> FreeBSD 2.1.5 on i586 66Mhz:
> 104.06 real 51.97 user 0.00 sys
My machine:
P100/32MB/FreeBSD 2.1/Proxy SQUID/router to ISP (33600Kb)/30
logined users:
30.65 real 29.33 user 0.02 sys
8-()
>
> FreeBSD 2.2.1 on i586 133Mhz:
> 737.01 real 588.48 user 0.43 sys
>
> More than 10 times slower than 2.1.5 on a weaker system.
> Obviously, that time is spent inside libc.
>
> ---
> #include <stdio.h>
> int main()
> {
> int i;
> char str[256];
> for(i=0; i<1000000; i++)
> sscanf("abcde","%255[a-zA-Z]",str);
> return 0;
> }
> ---
> Alexander.
>
Best wishes, Eugeny Kuzakov
Laboratory 321 ( Omsk, Russia )
kev@l321.omsk.net.ru
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