Tony Nelson wrote:
At 12:28 AM +0200 10/13/06, Dotan Cohen wrote:
On 12/10/06, Tony Nelson <tonynelson@xxxxxxxxxxxxxxxxx> wrote:
I have a Athlon 1.2 GHz 512 MB and it is not slow on FC5, though I'm not
running the same mix as you are. I think possibly something is not right
on your system. Does top show a high load, or indicate that the system is
swapping? Perhaps the disks are fragmented -- EXT2/3 data structures don't
suffer much from fragmentation, but the file data does.
This is top:
top - 00:26:49 up 15:35, 1 user, load average: 0.77, 0.61, 0.67
Load seems low enough.
Tasks: 110 total, 1 running, 109 sleeping, 0 stopped, 0 zombie
Cpu(s): 2.7% us, 0.7% sy, 0.0% ni, 96.3% id, 0.0% wa, 0.3% hi, 0.0% si
Mem: 1002168k total, 952200k used, 49968k free, 42264k buffers
Swap: 1413648k total, 18460k used, 1395188k free, 575176k cached
Not using much swap.
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
4433 root 15 0 98.6m 56m 4944 S 1.3 5.8 347:19.29 Xorg
10572 dotancoh 16 0 32148 15m 11m S 1.0 1.6 0:01.07 konsole
4829 dotancoh 15 0 25544 3684 1752 S 0.7 0.4 2:02.78 dcopserver
5298 dotancoh 15 0 37460 22m 16m S 0.3 2.3 2:58.72 kicker
10574 dotancoh 16 0 2192 1112 856 R 0.3 0.1 0:00.05 top
1 root 16 0 1568 532 460 S 0.0 0.1 0:01.46 init
2 root RT 0 0 0 0 S 0.0 0.0 0:00.00 migration/0
3 root 34 19 0 0 0 S 0.0 0.0 0:00.00 ksoftirqd/0
4 root RT 0 0 0 0 S 0.0 0.0 0:00.00 watchdog/0
5 root 10 -5 0 0 0 S 0.0 0.0 0:01.34 events/0
6 root 10 -5 0 0 0 S 0.0 0.0 0:00.02 khelper
7 root 10 -5 0 0 0 S 0.0 0.0 0:00.00 kthread
9 root 10 -5 0 0 0 S 0.0 0.0 0:00.16 kblockd/0
10 root 20 -5 0 0 0 S 0.0 0.0 0:00.00 kacpid
105 root 15 0 0 0 0 S 0.0 0.0 0:00.24 pdflush
106 root 15 0 0 0 0 S 0.0 0.0 0:00.76 pdflush
108 root 18 -5 0 0 0 S 0.0 0.0 0:00.00 aio/0
How can I check fragmentation. Googling the subject makes me beleive
that this is not the case in general with Linux.
The common wisdom is that EXT2/3 are not affected by fragmentation, but
without much real-world proof that this is so. The EXT2/3 filesystem
metadata was designed to be not much affected by fragmentation, but that
says little about the file data. I read an article / webpage (that I can't
find right now) by someone who decided to experiment with new and used EXT2
filesystems, and found a substatial slowdown. He was inspired to try this
because he noticed that his computer sped up when given a fresh filesystem.
You could try backing up and restoring to a fresh filesystem. If you
spring for a new computer you'll back up and restore to the new computer.
Either way you'll get a fresh new filesystem.
Look at the Xorg Time. Doesn't 347:19.29 with an uptime of 15:35 seem
extremely high? On my box, X uses about 4 minutes / hour of uptime.
And the load averages on most of the desktops I use are mostly in the
0.1 - 0.3 range. This box has something eating CPU. I don't think the
file system is the problem.
Regards,
John
