Author Topic: IRQ Monitor  (Read 2227 times)

ivan

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IRQ Monitor
« on: June 25, 2016, 01:09:38 am »
For years I have used the graphical PM program IRQMon to monitor IRQ usage but now I am considering moving to using ACPI  rather than OS2APIC.PSD because of problems I am having with a new motherboard that stacks things like nic, usb, hard disk controllers all on the same IRQ 11 (fine if I am not doing much but a PITA when I want to copy something from a USB disk to the NAS box and do something else that brings the internal hard disk into use).

Now the question is, is there an equivalent to IRQMon that can be left running all the time and display IRQ usage on a real time basis and show the high IRQ numbers?  Is it even possible to do so with IRQs above 15?



Dave Yeo

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Re: IRQ Monitor
« Reply #1 on: June 25, 2016, 07:23:39 am »
I don't know of any program that runs continuously and shows all IRQ usage but it is quite possible. From AcpiStat.exe here,
Quote
Number of IRQs available: 24
IRQ 00 count 3996733
IRQ 01 count 21210
IRQ 04 count 18512407
IRQ 08 count 112619080
IRQ 09 count 93674
IRQ 15 count 315
IRQ 16 count 168603
IRQ 17 count 704552
IRQ 18 count 3539178

so the information is available and there is a ACPI toolkit available.
I'll also note that IRQs 16-18 are heavily shared here and copying many small files from the SATA HD to USB stick can peg the CPU and make even the mouse unresponsive. Probably using a different USB port (four on the front and four on the back) would help.

Lars

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Re: IRQ Monitor
« Reply #2 on: June 25, 2016, 12:25:55 pm »
May I throw in that with USB drivers 10.205 and 10.206 I have also reworked the USBMSD.ADD data transmission code. I hope it has helped performance while at the same time it should reduce IRQ load.

Vadim Priluzkiy

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Re: IRQ Monitor
« Reply #3 on: July 06, 2016, 02:27:44 pm »
If you use OS/4 kernels, you may use SL(System Load by Digi).
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ivan

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Re: IRQ Monitor
« Reply #4 on: July 06, 2016, 07:06:13 pm »
Hi Vadim,

Does it produce a display similar to the IRQMon one as shown in the attachment?

Vadim Priluzkiy

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Re: IRQ Monitor
« Reply #5 on: July 07, 2016, 12:08:37 pm »
Hi Vadim,

Does it produce a display similar to the IRQMon one as shown in the attachment?
Yes! And much more monitors -- CPU(with temp), network, memory, disk, processes
« Last Edit: July 07, 2016, 12:24:01 pm by Vadim Priluzkiy »
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Martin Iturbide

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Re: IRQ Monitor
« Reply #6 on: July 08, 2016, 03:52:04 pm »
Hi

There are some other screenshots of SystemLoad on the Wiki.

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Martin Iturbide
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