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Adam,
=20
After much troubleshooting and name-calling, I found that NET_BUFFER_SZ
has to be placed in the high-level NB dir (i.e. C:\Program
Files\Veritas\NetBackup). SIZE_DATA_BUFFERS and NUMBER_DATA_BUFFERS have
to be put in db/config. I have had much trouble attempting to boost
performance with these values. My Buffer size was set to 64k, and I read
that Windows 2000 cannot write to tape drives with a buffer size larger
than 64k. Ok, I then attempted to increase the number of buffers, and
was then met with misc. errors that bombed my jobs. I wish I remembered
them, but if you play with the values a good bit, you'll see it I'm
sure. Finally, on the NET_BUFFER_SZ, I was able to slightly increase
peak performance, but nothing dramatic. When I turned the value up to a
respectable amount, the machine completely disappeared off the network
and I had to disable/reenable the GBE NIC. Now I'm back down around
stock. Documentation for Win2k performance tuning is absolutely
horrible/non-existent. You would think Veritas would be interested in
people getting the best performance out of their software, I guess there
aren't enough Win2k Master/Media servers out there to make them care? I
dunno.=20
=20
Hope this helps!
=20
Kyle Meyer
-----------------
Network Administrator
Banderacom, Inc
www.banderacom.com=20
=20
=20
-----Original Message-----
From: ADAM [mailto:adamlapizza AT hotmail DOT com]=20
Sent: Wednesday, January 30, 2002 9:42 AM
To: Veritas-bu AT mailman.eng.auburn DOT edu
Subject: [Veritas-bu] NET_BUFFER_SZ, SIZE_DATA_BUFFERS and
NUMBER_DATA_BUFFERS
=20
Hi All,
=20
Has anyone used NET_BUFFER_SZ, SIZE_DATA_BUFFERS and NUMBER_DATA_BUFFERS
under W2K and can you please let me know the best why to configure this?
We would like to use these same parameters in the W2K environment and
have no details other than those for Windows NT 4.
=20
Thanks for your help.
=20
Regards=20
=20
Adam
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<DIV><SPAN class=3D634310417-30012002></SPAN><FONT face=3DArial =
color=3D#0000ff=20
size=3D2><SPAN class=3D634310417-30012002>Adam,</SPAN></FONT></DIV>
<DIV><FONT face=3DArial><FONT size=3D2><FONT color=3D#0000ff><FONT =
face=3DArial=20
color=3D#0000ff size=3D2></FONT></FONT></FONT></FONT> </DIV>
<DIV><FONT face=3DArial><FONT size=3D2><FONT color=3D#0000ff><SPAN=20
class=3D619441821-21122001><SPAN class=3D634310417-30012002>After much=20
troubleshooting and name-calling, I found that </SPAN>NET_BUFFER_SZ =
has to=20
be placed in the high-level NB dir<SPAN class=3D634310417-30012002>=20
(</SPAN></SPAN><SPAN class=3D619441821-21122001><SPAN=20
class=3D634310417-30012002>i.e. C:\Program Files\Veritas\NetBackup).=20
SIZE_DATA_BUFFERS and NUMBER_DATA_BUFFERS </SPAN></SPAN><SPAN=20
class=3D619441821-21122001>have to be put in db/config<SPAN=20
class=3D634310417-30012002>. I have had much trouble attempting to boost =
performance with these values. My Buffer size was set to 64k, and I read =
that=20
Windows 2000 cannot write to tape drives with a buffer size larger than =
64k. Ok,=20
I then attempted to increase the number of buffers, and was then met =
with misc.=20
errors that bombed my jobs. I wish I remembered them, but if you play =
with the=20
values a good bit, you'll see it I'm sure. Finally, on the =
NET_BUFFER_SZ, I was=20
able to slightly increase peak performance, but nothing dramatic. When I =
turned=20
the value up to a respectable amount, the machine completely disappeared =
off the=20
network and I had to disable/reenable the GBE NIC. Now I'm back down =
around=20
stock. Documentation for Win2k performance tuning is absolutely=20
horrible/non-existent. You would think Veritas would be interested in =
people=20
getting the best performance out of their software, I guess there aren't =
enough=20
Win2k Master/Media servers out there to make them care? I dunno.=20
</SPAN></SPAN></FONT></FONT></FONT></DIV>
<DIV><FONT face=3DArial><FONT size=3D2><FONT color=3D#0000ff><SPAN=20
class=3D619441821-21122001><SPAN=20
class=3D634310417-30012002></SPAN></SPAN></FONT></FONT></FONT><FONT=20
face=3DArial><FONT size=3D2><FONT color=3D#0000ff><SPAN =
class=3D619441821-21122001><SPAN=20
class=3D634310417-30012002></SPAN></SPAN></FONT></FONT></FONT> </DIV=
>
<DIV><FONT face=3DArial><FONT size=3D2><FONT color=3D#0000ff><SPAN=20
class=3D619441821-21122001><SPAN class=3D634310417-30012002>Hope this=20
helps!</SPAN></SPAN></FONT></FONT></FONT></DIV>
<DIV><FONT face=3DArial><FONT size=3D2><FONT color=3D#0000ff><SPAN=20
class=3D619441821-21122001><SPAN=20
class=3D634310417-30012002></SPAN></SPAN></FONT></FONT></FONT><FONT=20
face=3DArial><FONT size=3D2><FONT color=3D#0000ff><SPAN =
class=3D619441821-21122001><SPAN=20
class=3D634310417-30012002></SPAN></SPAN></FONT></FONT></FONT><FONT=20
face=3DArial><FONT size=3D2><FONT color=3D#0000ff><FONT face=3DArial=20
size=3D2></FONT></FONT></FONT></FONT> </DIV>
<DIV align=3Dleft><FONT face=3DArial color=3D#0000ff size=3D2>Kyle =
Meyer</FONT></DIV>
<DIV align=3Dleft><FONT face=3DArial color=3D#0000ff=20
size=3D2>-----------------</FONT></DIV>
<DIV align=3Dleft><FONT face=3DArial color=3D#0000ff size=3D2>Network=20
Administrator</FONT></DIV>
<DIV align=3Dleft><FONT face=3DArial color=3D#0000ff =
size=3D2>Banderacom,=20
Inc</FONT></DIV>
<DIV class=3DOutlookMessageHeader lang=3Den-us dir=3Dltr =
align=3Dleft><FONT=20
face=3DArial><FONT color=3D#0000ff><FONT size=3D2><SPAN =
class=3D634310417-30012002><A=20
href=3D"http://www.banderacom.com";>www.banderacom.com</A> </SPAN></F=
ONT></FONT></FONT></DIV>
<DIV class=3DOutlookMessageHeader lang=3Den-us dir=3Dltr =
align=3Dleft><FONT=20
face=3DArial><FONT color=3D#0000ff><FONT size=3D2><SPAN=20
class=3D634310417-30012002></SPAN></FONT></FONT></FONT> </DIV>
<DIV class=3DOutlookMessageHeader lang=3Den-us dir=3Dltr =
align=3Dleft><FONT=20
face=3DArial><FONT color=3D#0000ff><FONT size=3D2><SPAN=20
class=3D634310417-30012002></SPAN></FONT></FONT></FONT> </DIV>
<DIV class=3DOutlookMessageHeader lang=3Den-us dir=3Dltr =
align=3Dleft><FONT=20
face=3DArial><FONT color=3D#0000ff><FONT size=3D2><SPAN=20
class=3D634310417-30012002> </SPAN>-----Original =
Message-----<BR><B>From:</B>=20
ADAM [mailto:adamlapizza AT hotmail DOT com] <BR><B>Sent:</B> Wednesday, =
January 30,=20
2002 9:42 AM<BR><B>To:</B> =
Veritas-bu AT mailman.eng.auburn DOT edu<BR><B>Subject:</B>=20
[Veritas-bu] NET_BUFFER_SZ, SIZE_DATA_BUFFERS and=20
NUMBER_DATA_BUFFERS<BR><BR></DIV></FONT></FONT></FONT>
<DIV dir=3Dltr><FONT face=3DArial><FONT size=3D2><FONT =
color=3D#0000ff><FONT=20
face=3DArial><FONT face=3DArial><SPAN=20
class=3D090285513-17042001></SPAN></FONT></FONT></FONT></FONT></FONT></DI=
V>
<DIV dir=3Dltr><FONT face=3DArial><FONT size=3D2><FONT =
color=3D#0000ff><FONT=20
face=3D"Comic Sans MS"><FONT face=3DArial><SPAN=20
class=3D090285513-17042001></SPAN></FONT></FONT></FONT></FONT></FONT>&nbs=
p;</DIV>
<DIV dir=3Dltr><SPAN class=3D090285513-17042001><FONT face=3DArial =
color=3D#0000ff=20
size=3D2>Hi All,</FONT></SPAN></DIV>
<DIV dir=3Dltr><FONT face=3DArial><FONT size=3D2><FONT =
color=3D#0000ff><FONT=20
face=3D"Comic Sans MS"><FONT face=3DArial><SPAN=20
class=3D090285513-17042001></SPAN></FONT></FONT></FONT></FONT></FONT>&nbs=
p;</DIV>
<DIV dir=3Dltr><SPAN class=3D090285513-17042001><FONT face=3DArial><FONT =
size=3D2><FONT=20
color=3D#0000ff>Has anyone used <SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: black">NET_BUFFER_SZ, SIZE_DATA_BUFFERS =
and=20
NUMBER_DATA_BUFFERS </SPAN>under W2K and can you please let me know the =
best why=20
to configure this? We would like to <SPAN =
class=3D090285513-17042001>use=20
these same p</SPAN><SPAN class=3D090285513-17042001>aramet</SPAN><SPAN=20
class=3D090285513-17042001>ers in the W2K environment and have no =
details other=20
than those for Windows NT 4.</SPAN></FONT></FONT></FONT></SPAN></DIV>
<DIV dir=3Dltr><FONT face=3DArial><FONT size=3D2><FONT =
color=3D#0000ff><FONT=20
face=3D"Comic Sans MS"><FONT face=3DArial><SPAN=20
class=3D090285513-17042001></SPAN></FONT></FONT></FONT></FONT></FONT>&nbs=
p;</DIV>
<DIV dir=3Dltr><SPAN class=3D090285513-17042001><FONT face=3DArial =
color=3D#0000ff=20
size=3D2>Thanks for your help.</FONT></SPAN></DIV>
<DIV dir=3Dltr><FONT face=3DArial><FONT size=3D2><FONT =
color=3D#0000ff><FONT=20
face=3D"Comic Sans MS"><FONT face=3DArial><SPAN=20
class=3D090285513-17042001></SPAN></FONT></FONT><FONT face=3D"Comic Sans =
MS"><FONT=20
face=3DArial><SPAN class=3D090285513-17042001></SPAN></FONT></FONT><FONT =
face=3D"Comic Sans MS"><FONT face=3DArial><SPAN=20
class=3D090285513-17042001></SPAN></FONT></FONT></FONT></FONT></FONT>&nbs=
p;</DIV>
<DIV dir=3Dltr><SPAN class=3D090285513-17042001></SPAN><FONT =
face=3DArial=20
color=3D#0000ff size=3D2>Regards </FONT></DIV>
<DIV dir=3Dltr><FONT face=3DArial><FONT size=3D2><FONT =
color=3D#0000ff><FONT=20
face=3D"Comic Sans MS"></FONT></FONT></FONT></FONT> </DIV>
<DIV dir=3Dltr><FONT face=3DArial color=3D#0000ff=20
size=3D2>Adam</FONT></DIV></BODY></HTML>
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