Date: Thu, 3 Apr 1997 19:21:42 +0400 (MSD) From: "Alexander V. Lukyanov" <lav@video.yars.free.net> To: bugs@FreeBSD.org Subject: sscanf is slow on 2.2.1 Message-ID: <199704031521.TAA03420@video.yars.free.net>
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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
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.
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