Re: DPCs causing 100% processor usage at random times
maybe this helps, also think audio drivers, network adapters, and so on.
"sebbelcher" <email@example.com> wrote in message
> This has just started happening today, nothing new has been added to my
> system and I havent installed ANY new software for a few weeks (except
> Windows updates of course).
> At random intervals, for periods lasting up to 15mins a process called
> (as shown in Process Explorer) will use 100% of core processing time.
> Luckily I have a dual core system so this does not completly hang my
> computer, it does however make it painfully slow to use, opening a Windows
> explorer window will take anything from 5 seconds to 30 seconds.
> I can discern no common trigger for the start of these full load periods,
> similarly they stop just as suddenly after a seemingly random period.
> A quick Google shows many people with this problem (Deffered Procedure
> Calls) but 99% are on XP. Most say it is a hardware issue, but I cannot
> a reason for this, my hardware has been stable and unchaged for many
> Anyway as a check I removed, cleaned and reseated all components, but the
> problem remains as before. Others say it is a temperature related thing,
> my CPU, motherboard and GFX card are well within their acceptable limits.
> 46, 38 and 51 degrees celcius respectively. I cannot confirm the
> of my RAM but to the touch it is much cooler than the cpu, so I don't
> that can be overheating.
> What are deffered procedure calls? What events cause them? What would
> DPCs to use 100% of processor time?