LinuxQuestions.org
Download your favorite Linux distribution at LQ ISO.
Go Back   LinuxQuestions.org > Forums > Linux Forums > Linux - Software
User Name
Password
Linux - Software This forum is for Software issues.
Having a problem installing a new program? Want to know which application is best for the job? Post your question in this forum.

Notices


Reply
  Search this Thread
Old 03-30-2009, 03:21 AM   #1
jimbo1954
Member
 
Registered: Oct 2006
Location: High Wycombe, Bucks, UK.
Distribution: Debian and Fedora Core in equal measure
Posts: 264

Rep: Reputation: 33
Artificially Loading a System


I have a fast machine with lots of memory, running fully patched Ubuntu 8.10 (though 8.04 does the same). I want to run LCDd on it, to drive an LCD display which will give machine status, etc (Specifically the Soundgraph LCD). However, when I run LCDd, I get massive numbers of device write errors in syslog as long as LCDd runs, and which stop when I exit. I am not trying to send anything to the LCD at this point, just have LCDd start and prepare for writes.

I have tried compiling from a range of LCDd sources, CVS, etc, with numerous patches and trick stuff, and used various LIRC sources (Soundgraph is intimately tied up with LIRC), but it always fails on device write. I think the LCDd daemon is driving the hardware faster than it can handle, so any write does not complete successfully, hence the device write errors.

I know of only *very* few others who have seen this error in these conditions, probably because the LCD is associated with HTPC systems, which probably are not equipped with the calibre of processor/memory/Mobo I have here. The LCD hardware is OK (It is designed to run under Windoze, and does so very well in the same box with the system drive replaced with a Windoze-loaded disk).

What I want to do is run a process that loads the system to 90%-ish, and denies LCDd clock cycles, so it runs (from the point of view of the hardware) slower, which will prove or disprove my theory. If I can prove that its a hardware dependency, I can hack the daemon (add some delay into the write)

I need suggestions for an application (probably a testing app) that can load a system to the max, prefereably with some means of regulating the absolute load.

Thanks
 
Old 03-30-2009, 10:51 AM   #2
*******
Member
 
Registered: Feb 2009
Posts: 63

Rep: Reputation: 16
http://freshmeat.net/projects/stress/ ?
 
Old 03-30-2009, 01:28 PM   #3
jimbo1954
Member
 
Registered: Oct 2006
Location: High Wycombe, Bucks, UK.
Distribution: Debian and Fedora Core in equal measure
Posts: 264

Original Poster
Rep: Reputation: 33
Mixed Results..

Hi *******,

That certainly allowed me to load the system, so in that sense, a useful answer. However, it proved my theory wrong, so back to the drawing board

Thanks anyway
 
  


Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off



Similar Threads
Thread Thread Starter Forum Replies Last Post
My grub is not loading on dual operating system with windows Xp Pro causing my system marlene tack Linux - Newbie 2 03-17-2008 07:54 AM
system freeze after loading the ac.ko module wet Linux - Newbie 0 11-03-2007 07:11 AM
Error Loading Operating System :( zXen Ubuntu 2 03-06-2006 07:38 AM
System loading faster linuxmandrake Debian 1 10-14-2005 09:57 AM
Error loading operating system blueuk Linux - General 3 12-15-2003 07:44 AM

LinuxQuestions.org > Forums > Linux Forums > Linux - Software

All times are GMT -5. The time now is 07:51 PM.

Main Menu
Advertisement
My LQ
Write for LQ
LinuxQuestions.org is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
Syndicate
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Open Source Consulting | Domain Registration