On Wed, 8 Feb 2006 01:55 pm, Grant Coady wrote:
> On Wed, 8 Feb 2006 13:35:18 +1100, Con Kolivas <[email protected]> wrote:
> >On Wed, 8 Feb 2006 01:11 pm, Grant Coady wrote:
> >> Hi there,
> >>
> >> grant@deltree:~$ uname -r
> >> 2.6.15.3a
> >> grant@deltree:~$ time grep -v 192\.168\. /var/log/apache/access_log| cut
> >> -c-95 ...
> >> 2006-02-08 12:38:13 +1100: bugsplatter.mine.nu 193.196.182.215 "GET
> >> /test/linux-2.6/tosh/ HTTP/
> >>
> >> real 0m8.537s
> >> user 0m0.970s
> >> sys 0m1.100s
> >>
> >> --> reboot to 2.4.32-hf32.2
> >>
> >> grant@deltree:~$ uname -r
> >> 2.4.32-hf32.2
> >> grant@deltree:~$ time grep -v 192\.168\. /var/log/apache/access_log| cut
> >> -c-95 ...
> >> 2006-02-08 12:38:13 +1100: bugsplatter.mine.nu 193.196.182.215 "GET
> >> /test/linux-2.6/tosh/ HTTP/
> >>
> >> real 0m2.271s
> >> user 0m0.730s
> >> sys 0m0.540s
> >>
> >> Still a 4:1 slowdown, machine .config and dmesg info:
> >> http://bugsplatter.mine.nu/test/boxen/deltree/
> >
> >What happens if you add "| cat" on the end of your command?
>
> It gets faster with 2.4.32-hf32.2 by a little bit (I forgot to copy)
>
> reboot to 2.6.15.3a, without...
>
> real 0m8.737s
> user 0m1.030s
> sys 0m1.200s
>
> with... oh shit / surprise!!
>
> real 0m1.861s
> user 0m0.560s
> sys 0m0.370s
>
> What is that telling me / you / us?
Heh.
This is the terminal's fault. xterm et al use an algorithm to determine how
fast your machine is and decide whether to jump scroll or smooth scroll. This
algorithm is basically broken with the 2.6 scheduler and it decides to mostly
smooth scroll.
Cheers,
Con
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
