Re: Deferred procedure calls

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Not possible, unfortunately. In spite of the machine being very new, it is
very short of suitable slots - I had to take out the modem card in order to
accomodate the second NIC. (The primary NIC is on board.)

Just to give a little more detail, the primary NIC (Intel PRO/100VE) is on
the mother board and feeds my internet connection. The second NIC (D-link
DFE538-TX) is for my home network using NCS.

Robert
--
Dell Dimension 9100 Pentium D 2.80GHz
1GB RAM
Windows XP Prof SP2
Office 2003
HDD1: 250GB Serial ATA
HDD2: 250GB SCSI
ATI Radeon X600 256MB
Soundblaster Live! 24-bit
McAfee V_Scan / P_Firewall


"Bob I" wrote:

Possible the network card and the video are on the same PCI interrupt
line. Try moving the NIC over one slot, to put it on a different line.



Thanks. Did that but no real improvement. Have just rebooted after 29%
DPC's.

Robert
--
Dell Dimension 9100 Pentium D 2.80GHz
1GB RAM
Windows XP Prof SP2
Office 2003
HDD1: 250GB Serial ATA
HDD2: 250GB SCSI
ATI Radeon X600 256MB
Soundblaster Live! 24-bit
McAfee V_Scan / P_Firewall


"Bob I" wrote:

No idea on the numbers, but try updating NIC drivers, OR replace NIC.

Robert Davies wrote:

About 4 months ago I bought a new Pentium D from Dell and transferred all my
apps from my old P4. Apart from the change from P4 to D, the only other
changes of significance were moving from XP Home SP2 to XP Prof SP2 and
upgrading Office 2000 to Office 2003.

From the very start of using the new machine, I got stuttering audio and
jerky video, and after some help from the Dell message board, this was
diagnosed as excessive levels of Deferred Procedure Calls due to out-of-date
video drivers. I upgraded these and the audio and video are now much
improved but the problem of DPC's has not gone away. For example, this
afternoon after running a number of internet file transferring apps for
several hours, Process Explorer reported that between 20% and 50% of CPU time
was being used by DPC's. Not surprisingly, the machine was running very
slowly and the screen cursor was moving in big jumps!

I have done a little investigation and have discovered a Microsoft tool
called RATTV3 which helps analyse driver file performance and I have run this
for the last 36 hours. If I interpret the report correctly, this tells me
that the principal culprit in generating high levels of DPC's in excess of
1ms is ndis.sys. (Tcpip.sys also generates quite a lot but nothing like as
many as ndis.sys).

I do not know how to interpret the figures that RATT produces and I hope
that someone here will be able to. RATT shows that over a 36 hour monitoring
period ndis.sys generated nearly 30million DPC's, of which nearly 3 million
were more than 1ms, 625,000 were more than 10ms and 113 were more than 1
second.

Is this normal? Is this the source of the excessive DPC's? If it is, what
can I do about it? If it isn't, what might be the problem? My knowledge of
these things is pretty minimal at the best of times, and I am now way out of
my depth. I will be most grateful for any assistance that my be forthcoming.
Until then, I am continuing to reboot every 24 hours!

Thanks in anticipation.

Robert




.



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