01-09-2009
identify the unix process performing high disk i/o reads and writes
Guys,
Is there any UNIX command that captures the 'Unix process which is performing high disk I/O reads and writes'.
can you help me in this?
-Swamy
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 HPUX
acctdisk
acct(1M) acct(1M)
NAME
acct: acctdisk, acctdusg, accton, acctwtmp, closewtmp, utmp2wtmp - overview of accounting and miscellaneous accounting commands
SYNOPSIS
file] file]
[file]
reason
DESCRIPTION
Accounting software is structured as a set of tools (consisting of both C programs and shell procedures) that can be used to build account-
ing systems. The shell procedures, described in acctsh(1M), are built on top of the C programs.
Connect time accounting is handled by various programs that write records into the The programs described in acctcon(1M) convert this file
into session and charging records which are then summarized by (see acctmerg(1M)).
Process accounting is performed by the HP-UX system kernel. Upon termination of a process, one record per process is written to a file
(normally The programs in acctprc(1M) summarize this data for charging purposes; is used to summarize command usage (see acctcms(1M)).
Current process data can be examined using (see acctcom(1M)).
Process accounting and connect time accounting (or any accounting records in the format described in acct(4)) can be merged and summarized
into total accounting records by (see the format in acct(4)). is used to format any or all accounting records (see acctsh(1M)).
reads lines that contain user ID, login name, and number of disk blocks, and converts them to total accounting records that can be merged
with other accounting records.
reads its standard input (usually from and computes disk resource consumption (including indirect blocks) by login. Only files found under
login directories (as determined from the password file) are accounted for. All files under a login directory are assumed to belong to
that user regardless of actual owner. If is given, records consisting of those file names for which charges no one are placed in file (a
potential source for finding users trying to avoid disk charges). If is given, file is the name of the password file. This option is not
needed if the password file is (See diskusg(1M) for more details.)
turns process accounting off if the optional file argument is omitted. If file is given, it must be the name of an existing file, to which
the kernel appends process accounting records (see acct(2) and acct(4)).
writes a utmp record to its standard output if the option is not used. If the option is used, writes a record to The record contains the
current time and a string of characters that describe the reason for writing the record. A record type of is assigned (see utmp(4) and
utmps(4)). The string argument reason must be 11 or fewer characters, numbers, or spaces if option is not used. Otherwise, it must be 63
or fewer characters, numbers, or spaces. For example, the following are suggestions for use in reboot and shutdown procedures, respec-
tively:
writes a record, for each user currently logged in, to the file This program is invoked by runacct to close the existing file before creat-
ing a new one.
writes a record, for each user currently logged in, to the file This program is invoked by runacct to initialize the newly created file.
FILES
Holds all accounting commands listed in section(1M) of this manual.
Current process accounting file.
Used for converting login name to user ID
Login/logoff history file.
New login/logoff history database.
SEE ALSO
acctcms(1M), acctcom(1M), acctcon(1M), acctmerg(1M), acctprc(1M), acctsh(1M), diskusg(1M), fwtmp(1M), runacct(1M), acct(2), acct(4),
utmp(4). utmps(4), wtmps(4).
STANDARDS CONFORMANCE
acct(1M)