Just out of curiosity, does it help to say:
export LANG=en_US
?
David Mansfield wrote:
>On Fri, 28 Mar 2003, Andrew Morton wrote:
>
>
>>>After all of the rave reviews about the interactivity fixes (both regular
>>>and I/O scheduler related), I decided to give the 2.5.latest a try on my
>>>desktop machine (system described below)
>>>
>>>I started X, everything seemed fine, maybe a bit faster. I opened a
>>>'gnome-terminal' and typed 'ls -ltr'. Wow, it was 20x slower.
>>>
>>>Here are the timings for 'ls -ltr':
>>>
>>>2.5.66-mm1: 'ls -ltr' 31 seconds
>>>2.5.66-mm1: 'ls -ltr | cat' 2 seconds
>>>2.4.18-rhlatest: 'ls -ltr' 1.14 seconds
>>>
>>>
>>How many files were there?
>>
>>
>
>1337 files.
>
>
>
>>My /usr/bin contains 3168 files. An `ls -ltr' in gnome-terminal takes 9.6
>>seconds. In rxvt it takes 0.5 seconds. That's an 850MHz P3.
>>
>>So gnome-terminal appears to be a pretty slow application. My guess would be
>>that something in the 2.5 kernel has exposed a marginality or an outright
>>bug in it.
>>
>>
>
>Yes. gnome-terminal is godawful slow on RHAT 8.0 (it does Xrender
>alpha-channel crap for every character to get the anti-aliasing). But I
>think the problem has to do with the pipe/pty wakeups. After 'ls' writes
>a line to the pty, it seems as though the gnome-terminal is being woken up
>(even though 'ls' has more to write), it's generating the Xrender
>X-command and sending it to X. X is waking up and rendering it (which
>forces a complete update of the screen).
>
>Under 2.4.18-whatever, it would seem as though 'ls' is generating a large
>number of lines of output before the gnome-terminal is waking up, causing
>a dramatically fewer number of redraws.
>
>
>
>>It would be interesting to edit include/asm-i386/param.h and set HZ to 100.
>>
>>
>>
>
>I'll try to check this out over the weekend.
>
>David
>
>
>
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Mon Mar 31 2003 - 22:00:33 EST