01-10-2009
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi everyone,
Ive got a quick question about the feasibility and any suggestions for a shell script. I can use sh or ksh, doesnt matter. Basically, Ive got an output file from a db2 command that looks like so:
SCHEMA NAME CARD LEAF ELEAF LVLS ISIZE NDEL KEYS F4 F5 ... (3 Replies)
Discussion started by: rdudejr
3 Replies
2. Shell Programming and Scripting
I would like to write shell/perl script which identifies the top unix processes that are performing high disk I/O's or/and writes
If any one knows the solution please help me?
-Swamy (0 Replies)
Discussion started by: avsswamy
0 Replies
3. Shell Programming and Scripting
Hi Unix Gurus i am somewhat new to unix scripting so need your help to
create a script as below.
# This script would find the process consuming memory beyond a certain #limit. if the meemory consumption is more than 100% for a period of 1
# minute for the specific process. the script would... (0 Replies)
Discussion started by: robinforlinux
0 Replies
4. Filesystems, Disks and Memory
Hi,
I am trying to find the reliability of 'vmstat -d' for showing the actual physical writes on sectors on hard disk.
Can anyone please tell me if the numbers in the "sectors" field under "read" or "write" headers show a count of the actual write commands sent to disk from the low level... (2 Replies)
Discussion started by: jake24
2 Replies
5. Filesystems, Disks and Memory
Hi All
I was wondering how the copying of vast amounts of data affected the overall lifespan of an HDD.
In my example, I'm copying approx 120GB (250,000) of files, once per hour from disk to another.
Is this likely to have a detrimental effect on the disk in terms of reads/writes etc?
... (2 Replies)
Discussion started by: huskie69
2 Replies
6. Shell Programming and Scripting
I have high values (such as ÿÿÿÿ) in a text file contained in an Unix AIX server. I need to identify all the records
which are having these high values and also get the position/column number in the record structure if possible. Is there
any Unix command by which this can be done to :
1.... (5 Replies)
Discussion started by: devina
5 Replies
7. UNIX for Dummies Questions & Answers
I was analyzing the Disk read using hdparm utility.
This is what i got as a result.
# hdparm -t /dev/sda
/dev/sda:
Timing buffered disk reads: 108 MB in 3.04 seconds = 35.51 MB/sec
# hdparm -T /dev/sda
/dev/sda:
Timing cached reads: 3496 MB in 1.99 seconds = 1756.56 MB/sec... (1 Reply)
Discussion started by: pinga123
1 Replies
8. Shell Programming and Scripting
Hi
I am looking for an easy way to lock game mode (0) for everyone included op on a Minecraft server. It can be a script that every time a player changes game to 1 the script changes back to 0. What the player writes is visible in the java console. I am not good at script programming and my... (0 Replies)
Discussion started by: MyMorris
0 Replies
9. Linux
I'm trying to performance tune the I/O of my web server, which is at 41.1% reads merged (If my math is correct), which seems a tad high to just be going along with the defaults. Will modifying read_ahead_kb affect the value of "reads merged" in diskstats? If not, what's a good way of tracking... (2 Replies)
Discussion started by: thmnetwork
2 Replies
10. Emergency UNIX and Linux Support
In Our Production server I/O was very high, I Recived mail that Disk I/O was high, is it possible how to find which process Used this much I/O ?
Iam Using Ubuntu server 12.04.
Linux 3.9.3-x86_64-server33 (Li473-1200) 07/23/2014 _x86_64_ (8 CPU)
12:05:01 AM DEV ... (5 Replies)
Discussion started by: babinlonston
5 Replies
LEARN ABOUT DEBIAN
dvhtool
DVHTOOL(8) System Manager's Manual DVHTOOL(8)
NAME
dvhtool - Disk volume header manipulation tool
SYNOPSIS
dvhtool --device devicename [ option ]
dvhtool -d devicename [ option ]
DESCRIPTION
dvhtool is a utility for displaying SGI disk partition and volume header information as well as for copying files to and from the volume
header.
It is similar to the IRIX(tm) utility of the same name, however the options and usage are quite different. Also, the IRIX utility cannot
display partition and boot file information.
The disk volume header includes the disk partition table and the volume directory. The volume directory is an index to the files stored in
the volume header part of the disk. These files can be anything but are usually standalone programs (like sash, the SGI standalone shell).
The space available for files is usually limited to one, two or a few megabytes, this can only be changed by repartitioning the disk with
fx, the SGI disk formatting and partitioning tool or fdisk.
You must be root to invoke dvhtool. The device name can be /dev/sda for the first disk, /dev/sdb for the second, and so on.
dvhtool will also work on a file image of a disk volume header.
OPTIONS -d, --device devicename Specify the volume header device name (or file image)
--print-volume-header
Show volume header data only
--print-volume-directory
Show volume table of contents
--print-partitions
Show partition data
--print-all
Equivalent to all three above options
--vh-remove name
Remove volhdr file name.
--vh-to-unix name file
Copy volhdr file name to Unix file file
--unix-to-vh file name
Copy Unix file file to volhdr as name
--help Show usage information
SEE ALSO
fdisk(8)
IRIX tools: fx(1M), prtvtoc(1M), vh(7M).
AUTHORS
dvhtool was written by Ralf Baechle <ralf@oss.sgi.com>, Keith M. Wesolowski <wesolows@foobazco.org>, Tor Arntsen <tor@spacetec.no>, Guido
Guenther <agx@debian.org>.
4th Berkeley Distribution July 2000 DVHTOOL(8)