Sponsored Content
Top Forums UNIX for Dummies Questions & Answers Hard Disk Performance issues Suse 11 SP1 Post 302845553 by karlochacon on Wednesday 21st of August 2013 07:11:40 PM
Old 08-21-2013
Hard Disk Performance issues Suse 11 SP1

hi guys

right now I have 6 Virtual Machines (VMs) running on Vmware ESXi 5.1 and attached to Storage SAN.
All these run Suse Linux 11 SP1 x64.

All of a sudden 1 of these VMs is running very slow making high CPU usage and I see al wait % kinda high 40-50%. Apparently since I don't own this virtual server the server was running fine and last change made was increasing memory

so I found out that test hard disk performance must be the issue
VM having issues. It so slow that I cancel the command but it's running at 2.7 MB

Code:
dd if=/dev/zero of=test bs=1048576 count=2048
781+0 records out
818937856 bytes (819 MB) copied, 298.699 s, 2.7 MB/s

running dd command on any of the other VMs linux server is about 280MB - 310 MB/s

Code:
dd if=/dev/zero of=test3 bs=1048576 count=2048
2048+0 records in
2048+0 records out
2147483648 bytes (2.1 GB) copied, 7.64361 s, 281 MB/s

any idea what could be causing this issue or how to fix it?

thanks a lot
 

7 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Awk Performance Issues

Hi All, I'm facing an issue in my awk script. The script is processing a large text file having the details of a number of persons, each person's details being written from 100 to 250 tags as given below: 100 START| 101klklk| ... 245 opr| 246 55| 250 END| 100 START| ... 245 pp| 246... (4 Replies)
Discussion started by: pgp_acc1
4 Replies

2. SCO

declare disk driver for IDE hard disk

hi I've a fresh installation of SCO 5.0.7 on the IDE hard disk. For SCSI hard disk I can declare, for example blc disk driver using: # mkdev hd 0 SCSI-0 0 blc 0but it works for IDE hard disk? (3 Replies)
Discussion started by: ccc
3 Replies

3. Solaris

Hard disk write performance very slow

Dear All, I have a hard disk in solaris on which the write performanc is too slow. The CPU , RAM memory are absolutely fine. What might be reason. Kindly explain. Rj (9 Replies)
Discussion started by: jegaraman
9 Replies

4. Linux

C++ Code to Access Linux Hard Disk Sectors (with a LoopBack Virtual Hard Disk)

Hi all, I'm kind of new to programming in Linux & c/c++. I'm currently writing a FileManager using Ubuntu Linux(10.10) for Learning Purposes. I've got started on this project by creating a loopback device to be used as my virtual hard disk. After creating the loop back hard disk and mounting it... (23 Replies)
Discussion started by: shen747
23 Replies

5. UNIX for Dummies Questions & Answers

GCC on suse 10 SP1

hi guys I use rpm -qa to find installed packages in red hat centos.... but how to do it in Suse 10 SP1 for instance? specifically I need to find if gcc installed thanks a lot (1 Reply)
Discussion started by: karlochacon
1 Replies

6. Solaris

Getcwd performance issues

Hello everyone, recently we have been experiencing performance issues with chmod. We managed to narrow it down to getcwd. The following folder exists: /Folder1/subfol1/subfol2/subfol3 cd /Folder1/subfol1/subfol2/subfol3 truss -D pwd 2>&1 | grep getcwd 0.0001... (4 Replies)
Discussion started by: KotekBury
4 Replies

7. SuSE

Personal SUSE build installation issues.

http://uploads.tapatalk-cdn.com/20160725/0174562490859032f68430fb0fa216cd.jpg I have created a personally made SUSE-based distro using susestudio.com and it will install just fine on my laptops (32-bit Acer Aspire One ZG5 and MacBook 4,1). However, when installing on an old Emachine desktop, I... (6 Replies)
Discussion started by: TheOuterLinux
6 Replies
vdltodmx(1)						      General Commands Manual						       vdltodmx(1)

NAME
vdltodmx - dmx configuration file parser and printer SYNOPSIS
vdltodmx infile outfile DESCRIPTION
vdltodmx reads the input file, which should be in VDL configuration file format. After a successful parse, a file in Xdmx configuration file format is written to the output file. The VDL file format is used with xmovie, which is available from http://www.llnl.gov/icc/lc/img/xmovie/xmovie.html EXAMPLE
Given the following VDL-format file: 0 2 # # 2560 2048 Left two-thirds [restrict=*:2] 2 :2.1 1280 2048 0 0 0 0 :2.2 1280 2048 1280 0 0 0 4 1280 1024 0 0 1280 1024 0 1024 1280 1024 1280 0 1280 1024 1280 1024 # 2560 2048 Right two-thirds [restrict=*:2] 2 :2.2 1280 2048 0 0 0 0 :2.3 1280 2048 1280 0 0 0 4 1280 1024 1280 0 1280 1024 1280 1024 1280 1024 2560 0 1280 1024 2560 1024 the following DMX-format file will be produced: # # virtual "Left two-thirds" 2560x2048 { display :2.1 1280x2048; display :2.2 1280x2048 @1280x0; } # virtual "Right two-thirds" 2560x2048 { display :2.2 1280x2048; display :2.3 1280x2048 @1280x0; } BUGS
If the VDL file is not in the expected format, the program will probably dump core. SEE ALSO
Xdmx(1), xdmxconfig(1), vdl(3), xmovie(1) X Version 11 xorg-server 1.12.4 vdltodmx(1)
All times are GMT -4. The time now is 01:54 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy