finley at privacynetworks.com
2007-Nov-09 06:13 UTC
[CentOS] CentOS 5: comment swap in fstab
I'm not sure what gave me this idea, but I decided
to comment out the swap partition in /etc/fstab
and reboot my laptop. I did not run swapoff directly at
any time.
I'm running more things now than I would ever dream of
to hammer my 500MB of memory, but I still notice NO
slowdown. This is the best desktop experience I've
ever had for any OS on any hardware!
Here's the first 12 lines in top (CPU)
top - 22:57:28 up 2:06, 1 user, load average: 1.11, 0.89, 0.88
Tasks: 97 total, 2 running, 95 sleeping, 0 stopped, 0 zombie
Cpu(s): 20.2%us, 2.9%sy, 0.0%ni, 76.2%id, 0.0%wa, 0.1%hi, 0.6%si,
0.0%st
Mem: 449556k total, 441840k used, 7716k free, 9420k buffers
Swap: 0k total, 0k used, 0k free, 159416k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
2921 root 15 0 227m 69m 7312 S 16.2 15.9 22:41.70 X
3317 finley 15 0 240m 25m 8684 S 3.1 5.8 2:32.73 xine
3204 finley 15 0 2160 772 564 S 2.2 0.2 2:02.71 top
3100 finley 15 0 183m 51m 16m S 0.8 11.7 5:03.90 firefox-bin
3116 finley 15 0 223m 39m 2440 S 0.4 8.9 0:54.26 java_vm
3264 finley 15 0 32276 9788 7132 S 0.3 2.2 0:23.74 kpat
3050 finley 15 0 33676 10m 7572 R 0.2 2.3 0:21.28 konsole
3049 finley 15 0 32080 7620 5668 S 0.1 1.7 0:01.62 kscd
3399 finley 15 0 57024 25m 16m S 0.1 5.7 0:08.55 konqueror
1 root 15 0 2028 480 392 S 0.0 0.1 0:00.29 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 0:00.06 ksoftirqd/0
Here's the top 12 lines (Mem)
top - 22:58:41 up 2:07, 1 user, load average: 1.14, 0.92, 0.89
Tasks: 97 total, 3 running, 94 sleeping, 0 stopped, 0 zombie
Cpu(s): 25.3%us, 2.9%sy, 0.0%ni, 71.5%id, 0.0%wa, 0.4%hi, 0.0%si,
0.0%st
Mem: 449556k total, 442156k used, 7400k free, 9648k buffers
Swap: 0k total, 0k used, 0k free, 159160k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
2921 root 16 0 227m 69m 7312 R 20.9 15.9 22:55.56 X
3100 finley 15 0 183m 51m 16m S 0.4 11.7 5:05.54 firefox-bin
3116 finley 15 0 223m 39m 2440 S 0.4 8.9 0:54.60 java_vm
3253 finley 15 0 198m 34m 9.8m S 0.0 7.9 0:07.97 swriter.bin
3317 finley 15 0 240m 25m 8684 S 2.9 5.8 2:35.17 xine
3399 finley 15 0 57024 25m 16m S 0.0 5.7 0:08.57 konqueror
3638 finley 15 0 93632 23m 15m S 0.0 5.4 0:03.80 gaim
3026 finley 15 0 35180 13m 10m S 0.0 3.1 0:05.42 kded
3336 finley 15 0 34232 11m 8776 S 0.0 2.7 1:01.01 kuickshow
3038 finley 15 0 35096 11m 8828 S 0.0 2.7 0:23.91 kicker
3050 finley 15 0 33676 10m 7844 R 0.4 2.4 0:21.53 konsole
3264 finley 15 0 32276 9808 7152 S 0.0 2.2 0:23.85 kpat
As you can see, I'm running a KDE environment. I'm going to
try this in a gnome environment tomorrow.
This is on an HP Pavillion ze4800 I purchased at WalMart a bit
over two years ago for ~$900.
>From dmesg:
AMD mobile AMD Athlon(tm) XP2800+
Memory: 447836k/457664k available
Linux info:
[finley at c182 ~]$ cat /etc/issue
CentOS release 5 (Final)
Kernel \r on an \m
[finley at c182 ~]$ uname -a
Linux c182.pnd.net 2.6.18-8.1.6.el5 #1 SMP Thu Jun 14 17:46:09 EDT
2007 i686 athlon i386 GNU/Linux
Hope this makes someone else's day!
Steve Finley
finley at privacynetworks.com wrote:> I'm not sure what gave me this idea, but I decided > to comment out the swap partition in /etc/fstab > and reboot my laptop. I did not run swapoff directly at > any time. > > I'm running more things now than I would ever dream of > to hammer my 500MB of memory, but I still notice NO > slowdown. This is the best desktop experience I've > ever had for any OS on any hardware!Er...you won't experience any slowdown...you would experience killed app.> Mem: 449556k total, 442156k used, 7400k free, 9648k buffers > Swap: 0k total, 0k used, 0k free, 159160k cached > > PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND > 2921 root 16 0 227m 69m 7312 R 20.9 15.9 22:55.56 X > 3100 finley 15 0 183m 51m 16m S 0.4 11.7 5:05.54 firefox-bin > 3116 finley 15 0 223m 39m 2440 S 0.4 8.9 0:54.60 java_vm > 3253 finley 15 0 198m 34m 9.8m S 0.0 7.9 0:07.97 swriter.bin > 3317 finley 15 0 240m 25m 8684 S 2.9 5.8 2:35.17 xine > 3399 finley 15 0 57024 25m 16m S 0.0 5.7 0:08.57 konqueror > 3638 finley 15 0 93632 23m 15m S 0.0 5.4 0:03.80 gaim > > As you can see, I'm running a KDE environment. I'm going to > try this in a gnome environment tomorrow....Interesting, the numbers do not add up...I wonder what happens as you visit more websites with firefox...and if you also run thunderbird at the same time... Maybe you should stick to konqueror and kmail...> > Hope this makes someone else's day!My apologies if I burst any bubbles :-D