Test and Measurement Forum

High CPU Usage w/ Pico 4000

Post general discussions on using our drivers to write your own software here

High CPU Usage w/ Pico 4000

Postby jim@jmxservices.com » Fri Sep 10, 2010 6:22 pm

We have a problem with a monitoring application that leaves several Picoscope 4000s armed and waiting for triggers for 24/7/365. The PC CPU operates at 100% use with tremendous heat generation just so the driver can "wait" for the trigger. The setup (PC and scopes in an enclosed case) is on the outside of industrial equipment that also generates heat, which is outside in the hot sun all day. Needless to say, any normal industrial computer can handle the stress with a normal load, but not with 100% CPU all day and night for months. Is there a possibility of a driver that does not cause the 100% CPU use when "waiting" for trigger?

Thanks
jim@jmxservices.com
Newbie
 
Posts: 0
Joined: Sun May 16, 2010 8:46 pm

Re: High CPU Usage w/ Pico 4000

Postby ziko » Mon Sep 13, 2010 8:51 am

Hi Jim,

You say several 4000s is this on one PC? If so how many?

You say it is armed to trigger, what are your settings?

Also you say it is to run 24/7/365, is it armed to trigger for that long?

Kind regards
Ziko

Technical Specialist
ziko
Zen Master
Zen Master
 
Posts: 1705
Joined: Fri Dec 01, 2006 10:03 am
Location: St Neots

Re: High CPU Usage w/ Pico 4000

Postby jim@jmxservices.com » Mon Sep 13, 2010 2:04 pm

1) There are three scopes on this particular PC, but there are many installations around the country just like it.
2) Trigger level/settings seem to be irrelevant. Even in the Picoscope 6 software, if I use a 4000 series scope (even with only one attached), and i set it to trigger based on ANY set of settings, it will use 100% CPU (at least for one thread worth on one logical core) until it triggers.
3) It is armed to trigger all the time. When it triggers, it takes the data, stores it, and automatically rearms. It may trigger 30 times a day, or as little as once a week. The source of triggers is not man-made.

The other series scopes of Picoscope that I have used do not perform this way. You can arm them, and the CPU sits virtually idle until trigger.
jim@jmxservices.com
Newbie
 
Posts: 0
Joined: Sun May 16, 2010 8:46 pm

Re: High CPU Usage w/ Pico 4000

Postby ziko » Thu Sep 16, 2010 9:52 am

Hi

The 4000 unit does use more CPU time than previous models, we are planning to do an upgrade however we cannot give any time scales.

Kind regards
Ziko

Technical Specialist
ziko
Zen Master
Zen Master
 
Posts: 1705
Joined: Fri Dec 01, 2006 10:03 am
Location: St Neots

Re: High CPU Usage w/ Pico 4000

Postby chrisadam » Mon Sep 20, 2010 8:58 am

The setup (PC and scopes in an enclosed case) is on the outside of industrial equipment that also generates heat, which is outside in the hot sun all day. Needless to say, any normal industrial computer can handle the stress with a normal load, but not with 100% CPU all day and night for months. Is there a possibility of a driver that does not cause the 100% CPU use when "waiting" for trigger.


________________________________


Want to get-on Google's first page and loads of traffic to your website? Hire a SEO specialist from Ocean Groups[url=http://oceangroups.org/] seo specialist [/url]
chrisadam
Newbie
 
Posts: 0
Joined: Mon Sep 20, 2010 8:52 am

Re: High CPU Usage w/ Pico 4000

Postby ziko » Wed Sep 22, 2010 1:18 pm

Hi not in the immediate future, however if you do want to formally request I would suggest emailing support@picotech.com

Kind regards
Ziko

Technical Specialist
ziko
Zen Master
Zen Master
 
Posts: 1705
Joined: Fri Dec 01, 2006 10:03 am
Location: St Neots


Return to General Software Discussions

Who is online

Users browsing this forum: No registered users and 0 guests