linux-kernel - Re: unresponsiveness on linux desktop during file copy

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Date:	Sun, 17 May 2009 20:39:14 +0800
From:	Wu Fengguang <fengguang.wu@...el.com>
To:	Satish Eerpini <eerpini@...il.com>
Cc:	Rik van Riel <riel@...hat.com>, Ray Lee <ray-lk@...rabbit.org>,
	Christoph Lameter <cl@...ux-foundation.org>,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: unresponsiveness on linux desktop during file copy

On Sun, May 17, 2009 at 08:27:39PM +0800, Satish Eerpini wrote:
> > The clear command can be a big clue. Can you try these commands in the
> > terminal and show us the two log files?
> >
> >        strace -o all.log -T clear
> >        strace -o sum.log -c clear
> >
> ok here go the logs :
> 

It looks that the "clear" command runs pretty fast in itself.
To be sure, can you run this?

strace -o log -tt clear

Or maybe the time is spent in gnome-terminal or bash?
What if you change them to xterm and dash?

> "sum.log"
> 
> % time     seconds  usecs/call     calls    errors syscall
> ------ ----------- ----------- --------- --------- ----------------
>  93.27    0.000485         485         1           execve
>   6.73    0.000035           7         5           ioctl
>   0.00    0.000000           0         3           read
>   0.00    0.000000           0         1           write
>   0.00    0.000000           0         4           open
>   0.00    0.000000           0         4           close
>   0.00    0.000000           0         3         2 access
>   0.00    0.000000           0         3           brk
>   0.00    0.000000           0         1           munmap
>   0.00    0.000000           0         2           mprotect
>   0.00    0.000000           0         9           mmap2
>   0.00    0.000000           0         3         1 stat64
>   0.00    0.000000           0         4           fstat64
>   0.00    0.000000           0         1           set_thread_area
> ------ ----------- ----------- --------- --------- ----------------
> 100.00    0.000520                    44         3 total
> 
> I have also attached the logs, in case that is more useful .
> 
> Cheers
> Satish
> 
> 
> 
> -- 
> http://satish.playdrupal.com



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