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Operating Systems Linux How do I boost the Linux performace Post 302256024 by jayfriend on Friday 7th of November 2008 05:06:02 PM
Old 11-07-2008
Quote:
Originally Posted by otheus
For sure it's not the processor (Look at your vmstat; see the column "id"? that means what percent of the time (per second) that your CPU is doing nothing (idle).) I also suspect it's not memory since you disabled VMware. Therefore, I suspect it's (a) slow or misconfigured hard drive or (b) bad hardware on the bus causing too many interrupts.

Let's start with the hard drive.
How much free space do you have on your drive? Show us the output of "df - k" please.

Then Read this : Tuning IDE Hard Disk Performance

If you have a 5400 RPM drive and it's using a 33 MHz bus, then it's going to be slow.
Please take look at the df -k output:
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/mapper/VolGroup00-LogVol00
73799088 33056048 36933760 48% /
/dev/sda1 101086 17623 78244 19% /boot
tmpfs 451824 0 451824 0% /dev/shm
 

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volcheck(1)							   User Commands						       volcheck(1)

NAME
volcheck - checks for media in a drive and by default checks all floppy media SYNOPSIS
volcheck [-v] [-i secs] [-t secs] pathname DESCRIPTION
The volcheck utility tells Volume Management to look at each dev/pathname in sequence and determine if new media has been inserted in the drive. The default action is to volcheck all checkable media managed by volume management. OPTIONS
The following options are supported: -i secs Set the frequency of device checking to secs seconds. The default is 2 seconds. The minimum frequency is 1 second. -t secs Check the named device(s) for the next secs seconds. The maximum number of seconds allowed is 28800, which is 8 hours. The fre- quency of checking is specified by -i. There is no default total time. -v Verbose. OPERANDS
The following operands are supported: pathname The path name of a media device. EXAMPLES
Example 1: A sample of the volcheck command. The following example example% volcheck -v /dev/diskette /dev/diskette has media asks Volume Management to examine the floppy drive for new media. The following example example% volcheck -i 2 -t 600 /dev/diskette1 & asks Volume Management if there is a floppy in the floppy drive every 2 seconds for 600 seconds (10 minutes). FILES
/dev/volctl Volume Management control port ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWvolu | +-----------------------------+-----------------------------+ SEE ALSO
eject(1), volcancel(1), volmissing(1) rmmount(1M), vold(1M), rmmount.conf(4), vold.conf(4), attributes(5), volfs(7FS) WARNINGS
Due to a hardware limitation in many floppy drives, the act of checking for media causes mechanical action in the floppy drive. Continu- ous polling of the floppy drive will cause the drive to wear out. It is recommended that polling the drive only be performed during periods of high use. SunOS 5.10 21 Feb 1997 volcheck(1)
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