Re: faster boots?

[Richard B. Johnson]

On Mon, 8 Apr 2002, David Lang wrote:

> On Mon, 8 Apr 2002, Richard B. Johnson wrote:
> 
> > On Mon, 8 Apr 2002, David Lang wrote:
> >
> > > watch out for the write cycle limits of your flash. they're pretty low
> > > power (at least compared to anything mechanical) but if you're not careful
> > > you can go through their write capability pretty fast.
> > >
> > > David Lang
> > >
> > >
> > >
> >
> > Upon boot, you can mount a ram-disk off from /tmp. That will reduce
> > the activity when using the usual editors, vi, vim, emacs, and pico,
> > which all create temp files on /tmp.
> 
> yes, you also need to mount the flash with noatime. even then you want to
> be careful about things like autosave.
> 
> David Lang

I'm not talking about flash. I'm talking about creating a RAM-Disk
upon startup, using RAM, and mounting it off from /tmp.

Script started on Mon Apr  8 15:22:47 2002
# mke2fs /dev/ram 4096
mke2fs 1.19, 13-Jul-2000 for EXT2 FS 0.5b, 95/08/09
Filesystem label=
OS type: Linux
Block size=1024 (log=0)
Fragment size=1024 (log=0)
1024 inodes, 4096 blocks
204 blocks (4.98%) reserved for the super user
First data block=1
1 block group
8192 blocks per group, 8192 fragments per group
1024 inodes per group

Writing inode tables: 0/1 done                            
Writing superblocks and filesystem accounting information: done
# mount /dev/ram /tmp
# df
Filesystem           1k-blocks      Used Available Use% Mounted on
/dev/sdb1             16603376   4390520  11369448  28% /
/dev/sdc1              6356624   3113264   2920456  52% /alt
/dev/sdc3              2253284   1383916    754908  65% /home/users
/dev/sda1              1048272    282192    766080  27% /dos/drive_C
/dev/sda5              1046224    181280    864944  17% /dos/drive_D
/dev/ram1                 3963        13      3746   0% /tmp
# ls -la /tmp
total 17
drwxr-xr-x   3 root     root         1024 Apr  8 15:23 .
drwxr-xr-x  24 root     root         4096 Apr  8 11:00 ..
drwxr-xr-x   2 root     root        12288 Apr  8 15:23 lost+found
# rmdir /tmp/lost+found
# cp * /tmp
cp: cdrom.root: omitting directory
cp: platinum-rel-V1.05: omitting directory
cp: platinum.2000: omitting directory
cp: platinum.old: omitting directory
cp: platinum.saved: omitting directory
cp: tar.gz: omitting directory
# df
Filesystem           1k-blocks      Used Available Use% Mounted on
/dev/sdb1             16603376   4390520  11369448  28% /
/dev/sdc1              6356624   3113264   2920456  52% /alt
/dev/sdc3              2253284   1383916    754908  65% /home/users
/dev/sda1              1048272    282192    766080  27% /dos/drive_C
/dev/sda5              1046224    181280    864944  17% /dos/drive_D
/dev/ram1                 3963      1915      1844  51% /tmp
# ls /tmp
2Alex.mail	 config.gz   friday.pdf      reboot.tar.gz    timer.tar.gz
Allocate.sh	 copy.iso    get_cdmusic.sh  reject_probe.sh  unix2dos.c
ME.TXT		 cp.iso      gettime.sh      resume.txt       windows.bad
WhereIs.PowerPC  dos2unix.c  grok.sh	     security.sh      zzz.c
backup.cdr	 eject.c     junk.c	     sockperf.c
backup.iso	 fifo.c      launch.tar      test_ramdisk.sh
bomb.tar.gz	 fpu.c	     new.xinitrc     testpoll.c
buffer.sh	 fpu_test.c  platinum.spc    testrd.sh
# umount /tmp
# exit
exit

Script done on Mon Apr  8 15:24:39 2002

Cheers,
Dick Johnson

Penguin : Linux version 2.4.18 on an i686 machine (797.90 BogoMips).

                 Windows-2000/Professional isn't.