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ntdll.dll!rtlallocateheap+0x18c using cpu in explorer .exe


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#1 xccxcc

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Posted 30 August 2010 - 11:38 AM

on my xp pro sp3 machine i latly seen the thread ntdll.dll!rtlallocateheap+0x18c in explorer.exe useing 45% to 50% of the cpu when launching a program
some programs also hace this thread but only explorer.exe 's thread acts up
i have run mbam and gmer and spybot and they all have found nothing
also some times the thread acts up like 15 seconds after a program starts

thanks for help in advance

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#2 hamluis

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Posted 30 August 2010 - 11:51 AM

I don't play around in Task Manager much...but, from what I've seen...it's not unusual for process usage to spike when a program is opened.

You can use Process Explorer to further look at any processes you have concerns about.

Process Explorer - http://technet.microsoft.com/en-us/sysinte...s/bb896653.aspx

Louis

#3 xccxcc

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Posted 30 August 2010 - 01:31 PM

that the program that i have been using to find the thread but i still dont know why it is acting up

#4 xccxcc

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Posted 30 August 2010 - 03:36 PM

am i over reacting or is this normal
it also spikes up when doing some rendering video in handbrake and music in fl studio
when i terminate the thread explorer just hangs

#5 hamluis

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Posted 30 August 2010 - 04:43 PM

I cannot answer the first question...that's for you to decide.

As for me, I think that it's normal for Task Manager to reflect spiking....not sustained levels...spiking when a program opens, works hard such as during rendering, etc.

When I render video, my video-editor takes much, if not all, of the CPU cycles. I don't run other programs while rendering, I just go to my other desktop.

Explorer, System Idle, Iexplore, and a few other processes...should be reflected as running as long as the system has booted into XP.

Louis

#6 xccxcc

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Posted 30 August 2010 - 04:57 PM

yes but when rendering hanbrake gets 40% and explorer is using 60% specifally the thread ntdll.dll!rtlallocateheap+0x18c or known as ntdll.dll!RtlpWokerThread

#7 xccxcc

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Posted 01 September 2010 - 06:57 PM

using procmon i found that explore would be reading meta data on each file that the program opened but what does that mean




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