I'm debugging a TxFax problem whereby the fax transmission fails. I suspect interrupt latency--some interrupt routine is holding its interrupt too long. I have all unnecessary services switched off and X is not running when I perform these tests. Some transmission are successful while others fail at random points.
I've noticed that after I boot Linux, load zaptel, wcfxo, and wcfxs, and then run System Monitor, the CPU utilization spikes to 60% every 10 seconds. After I remove wcfxs the spikes stop, and system utilization stays at 0%.
I have two TDM22B cards and get these spikes with either card in the system.
This is an Athlon-64 3000+ CPU and Fedora Core 2. zaptel-1.0.2.
Is there anyone who has a TDM card on a "quiet" system who can run System Monitor and observe CPU utilization?
Thanks for your help.
P.S. I do 'hdparm -u1 /dev/hdx' on the disks.
I have a athlon xp 1600 with a gig of memory a tdm40 with 2 fxs ports and a t100p t1 hooked to a audiocoded tp260 and see minimal cpu utilization when idle.
run top and see what is using the cpu. --
"They that give up essential liberty to obtain temporary safety, deserve neither liberty nor safety." (Ben Franklin)
"The course of history shows that as a government grows, liberty decreases." (Thomas Jefferson)
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