Re: 1.2.13 v 1.3.81 open() speed results

Pete Harlan (harlan@mymenus.com)
Tue, 16 Apr 1996 15:28:59 -0500 (CDT)

> I have just done a comparision between 1.2.13 and 1.3.81 using an perl5
[... (script that opens many files is much slower now)]
> There is a marked difference between them:-
>
> 1.2.13 1.3.81
> 436.36 user 448.09 user
> 41.74 system 552.36 system
> 11.36.25 elapsed 21.12.38 elapsed

I too experienced the same thing. We frequently grep through 6,000 or
so small files, and current kernels take 50% longer than 1.2.13; in my
case we also moved to elf only, which I figured accounted for some of
it, but it's a problem for us.

> If someone would kindly point me at the kernel profiling app, I will
> recompile and profile the kernel.

I'll perform tests too, if someone tells me what. Maybe Bash or Grep
needs to be recompiled with newer libraries (?) I'm running
libc-5.2.18 now, but am downloading 5.3.9 in hopes that things
improve.

Thanks,

--
Pete Harlan
pete@mymenus.com