Login or Register to Ask a Question and Join Our Community


UNIX for Advanced & Expert Users

What process is writing to disk?

Login to Discuss or Reply to this Discussion in Our Community

 
Thread Tools Search this Thread
Top Forums UNIX for Advanced & Expert Users What process is writing to disk?
# 8  
Old 10-29-2008
There is one process using high amounts of CPU usage. We tried disabling it to see if the IO problem went away, but it did not.
# 9  
Old 10-29-2008
Check this.
# 10  
Old 10-29-2008
Ironically, iostat's is taking FOREVER to download. Must be that they're python based. Smilie

I'm trying collectl (from sourceforge), but their options in 3.x don't match their documentation (2.4).
# 11  
Old 10-29-2008
Here you go:

Code:
sar -x ALL 3 10

I believe this will give some idea ... (it will display paging per process activity, not directly I/O activity, but I believe they are related).

May be something like this?

Code:
sar -x ALL 2 10|awk \$4

Last edited by radoulov; 10-29-2008 at 11:33 AM..
# 12  
Old 10-29-2008
Quote:
Originally Posted by otheus
Ironically, iostat's is taking FOREVER to download. Must be that they're python based. Smilie
[...]
Try to find a C version Smilie.
# 13  
Old 10-29-2008
Quote:
Originally Posted by radoulov
Try to find a C version Smilie.
It's the download, not the process Smilie
# 14  
Old 10-29-2008
Data
Quote:
Originally Posted by radoulov
Here you go:

Code:
sar -x ALL 3 10

I believe this will give some idea ... (it will display paging per process activity, not directly I/O activity, but I believe they are related).

May be something like this?

Code:
sar -x ALL 2 10|awk \$4

That's pretty cool, but like you said, it's not IO activity but page faults. Since we're not swapping, this really doesn't tell us anything. But just to be sure, stopping the biggist pagefaulter had no effect on io load. Smilie
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Open Source

Help with writing Shell Script to automate process using multiple commands

Hello! Need help to write a Linux script that can be run from windows using command/Cygwin/any other way. I am new to scripting, actually i am trying to automate server health check like free disk space, memory along with few services status, if any services is not running then start services ,... (7 Replies)
Discussion started by: Sayed Ibrahim
7 Replies

2. Emergency UNIX and Linux Support

How to find which process using, while getting High Disk I/O?

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

3. Ubuntu

Reading disk usage per process

Hi, I am using iostat and /proc/<pid>/status to determine the disk usage per process. I have a question regarding buffer cache. When I am reading a 10MB file, the counters I get show that <5MB of the file is read. Do the counters in iostat and /proc/<pid> reflect the amount of data that is... (2 Replies)
Discussion started by: fidelity
2 Replies

4. UNIX for Dummies Questions & Answers

Writing a loop to process multiple input files by a shell script

I have multiple input files that I want to manipulate using a shell script. The files are called 250.1 through 250.1000 but I only want the script to manipulate 250.300 through 250.1000. Before I was using the following script to manipulate the text files: for i in 250.*; do || awk... (4 Replies)
Discussion started by: evelibertine
4 Replies

5. Linux

How to follow up disk mirroring process?

Hi, The OS is SuSE Enterprise 11 and the system is HP WS460c G6 Blade with hardware disk array RAID 1 mirror. One disk was just replaced and the disk mirroring process is on its way. My question is how to follow up / monitor the disk mirroring process? I know hpacucli can do the job, but there... (0 Replies)
Discussion started by: aixlover
0 Replies

6. UNIX for Dummies Questions & Answers

Which process is doing all the writing

Hi We are running an IBM P570 with AIX and Unidata. The disk monitor in nmon is showing that one of our logical volumes is hitting 100% most of the time, and that 98% of it is write. I am trying to identify the top processes in terms of disk IO, obviously particularly write so that we... (4 Replies)
Discussion started by: idwalton72
4 Replies

7. Shell Programming and Scripting

Which Process is writing this Log file!!

Hello , Well I have some /tmp files which are growing very quickly..Can anyone suggest me a way to find which process is logging into this file :confused: ? Thanks very much in Advance!! Mohammed (2 Replies)
Discussion started by: Mohammed
2 Replies

8. AIX

disk i/o per process on aix 5.2

hi, i am working on aix 5.2, i want to check disk i/o for any running process. please if anybody can help me. thanks Aqeel Anwar (1 Reply)
Discussion started by: system-admin
1 Replies

9. UNIX for Advanced & Expert Users

disk i/o per process

Dear All, We are using AIX 5.2 with IBM pseries servers. I want to check disk io for a running process. Please if anybody can help me. Thanks. Aqeel Anwar (1 Reply)
Discussion started by: aqeelcu@hotmail
1 Replies

10. UNIX for Dummies Questions & Answers

Writing file to disk takes time

Hi All, I am working on a Solaris machine. When i use a particular software to generate some files, the log shows around 0 to 3 secs for generating each file. But the same when i see on the disk it shows double the time difference between two file generation. For example if file A takes 0 secs... (7 Replies)
Discussion started by: nileshkarania
7 Replies
Login or Register to Ask a Question