David,
of course SP4 (SP6 -- just my mind eclipse).
I was talking about our own code -- not yours. However as I've told
before we do not
use PAO (I've checked SAO and TAO). Burning speed is the same.
Regards,
Anton A. Kolomyeytsev
RocketDivision.Com -- Toolkits for Network and Storage Kernel Software
Developers
-----Original Message-----
From: xxxxx@lists.osr.com
[mailto:xxxxx@lists.osr.com] On Behalf Of David Burg
Sent: Tuesday, June 29, 2004 8:52 PM
To: Windows System Software Devs Interest List
Subject: RE: [ntdev] Windows 2000 twice slower then XP for
SCSI_PASS_THROUGH_DIRECT
Hello Anton,
You mean Windows 2000 SP4? Yes, the defect is visible there. A rebuild
does not affect the defect - our build server do build from clean
checkout each new release. Al is testing always on the same computer
(although the defect is visible on multiple computers). We are not
testing with Windows 2003 Server as the performance difference between
XP and 2k is already enough for us to need resolution.
(In case it was not yet obvious, I am working with Al Shatilo.)
Best regards,
David Burg
David Burg
Software Development,
InCD Project Leader
Ahead Software AG phone: +49 (0)7248 911 862 (direct line)
Im Stoeckmaedle 18 fax: +49 (0)7248 911 888
76307 Karlsbad email: xxxxx@nero.com
Germany http://www.nero.com
-----Original Message-----
From: xxxxx@lists.osr.com
[mailto:xxxxx@lists.osr.com] On Behalf Of Anton A.
Kolomyeytsev (CoolDev.Com)
Sent: Tuesday, June 29, 2004 7:32 PM
To: Windows System Software Devs Interest List
Subject: RE: [ntdev] Windows 2000 twice slower then XP for
SCSI_PASS_THROUGH_DIRECT
yes
just rebuilt the code to check 2000 SP6, XP SP1 and 2003 on the same
hardware
Regards,
Anton A. Kolomyeytsev
RocketDivision.Com -- Toolkits for Network and Storage Kernel Software
Developers
-----Original Message-----
From: xxxxx@lists.osr.com
[mailto:xxxxx@lists.osr.com] On Behalf Of Al Shatilo
Sent: Tuesday, June 29, 2004 8:28 PM
To: Windows System Software Devs Interest List
Subject: RE: [ntdev] Windows 2000 twice slower then XP for
SCSI_PASS_THROUGH_DIRECT
Hello Anton,
Saturday, June 26, 2004, 10:04:46 PM, you wrote:
Anton A. Kolomyeytsev> Maybe next time you'd be so kind to tell
everything by yourself and not Anton A. Kolomyeytsev> force others to
GUESS 
I ask initial question and after add on-request additional information.
This is usual for any question.
Anton A. Kolomyeytsev> You can send me your binary -- I can try to
experiment with some of my Anton A. Kolomyeytsev> "hardware zoo" DVD+RW
Anton A. Kolomyeytsev> burners and BusHound. You can also try it to see
-- is this device Anton A. Kolomyeytsev> itself inserting delays into
Anton A. Kolomyeytsev> command execution or SCSI command execution time
is the same under all Anton A. Kolomyeytsev> of the OSes and Anton A.
Kolomyeytsev> this is somebody (filter driver?) in the storage stack
adding overhead.
I have huge "hardware zoo" as well. My question not about testing on
your side, I did tests on my side already and put results into mailing
list. I checked the issue on several burners - same result. Question is
about different performance during SCSI_PASS_THROUGH_DIRECT request on
Windows 2000 and Windows XP.
Anton A. Kolomyeytsev> From what I see now (we also have a CD/DVD
burning engine working in NT Anton A. Kolomyeytsev> kernel) 2000 and XP
Anton A. Kolomyeytsev> work identically -- no differences noticed.
However we use TAO/SAO/DAO Anton A. Kolomyeytsev> and not PAO so the
Anton A. Kolomyeytsev> situation is not equal.
Do you use SCSI_PASS_THROUGH_DIRECT with buffers equal to 64K in your
software?
Best regards,
Al Shatilo
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Questions? First check the Kernel Driver FAQ at
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