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[Veritas-bu] Recommended number for NUM_DATA_BUFFERS?
2005-10-12 13:26:45
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check your bptm logs for entries that say "waited for empty buffer ####
times, delayed #### times."
=20
if you're not getting a lot of occurances of this, with numbers in the
thousands, then you won't get any better performance by increasing the
number of buffers.
=20
do a google search on Netbackup performance tuning.
=20
Paul
=20
=20
-----Original Message-----
From: veritas-bu-admin AT mailman.eng.auburn DOT edu
[mailto:veritas-bu-admin AT mailman.eng.auburn DOT edu] On Behalf Of Piszcz,
Justin
Sent: October 12, 2005 1:23 PM
To: veritas-bu AT mailman.eng.auburn DOT edu
Subject: [Veritas-bu] Recommended number for NUM_DATA_BUFFERS?
On a box with 14GB of ram, mine is set to 32.
=20
Would increasing this number to say 256 increase performance?
=20
Justin.
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<DIV><SPAN class=3D419362417-12102005><FONT face=3DArial color=3D#800000 =
size=3D2>check=20
your bptm logs for entries that say "waited for empty buffer #### =
times,=20
delayed #### times."</FONT></SPAN></DIV>
<DIV><SPAN class=3D419362417-12102005><FONT face=3DArial color=3D#800000 =
size=3D2></FONT></SPAN> </DIV>
<DIV><SPAN class=3D419362417-12102005><FONT face=3DArial color=3D#800000 =
size=3D2>if=20
you're not getting a lot of occurances of this, with numbers =
in the=20
thousands, then you won't get any better performance by increasing the =
number of=20
buffers.</FONT></SPAN></DIV>
<DIV><SPAN class=3D419362417-12102005><FONT face=3DArial color=3D#800000 =
size=3D2></FONT></SPAN> </DIV>
<DIV><SPAN class=3D419362417-12102005><FONT face=3DArial color=3D#800000 =
size=3D2>do a=20
google search on Netbackup performance tuning.</FONT></SPAN></DIV>
<DIV><SPAN class=3D419362417-12102005><FONT face=3DArial color=3D#800000 =
size=3D2></FONT></SPAN> </DIV>
<DIV><SPAN class=3D419362417-12102005><FONT face=3DArial color=3D#800000 =
size=3D2>Paul</FONT></SPAN></DIV>
<DIV><SPAN class=3D419362417-12102005><FONT face=3DArial color=3D#800000 =
size=3D2></FONT></SPAN> </DIV>
<DIV><SPAN class=3D419362417-12102005><FONT face=3DArial color=3D#800000 =
size=3D2></FONT></SPAN> </DIV>
<DIV></DIV>
<DIV><FONT face=3DTahoma size=3D2>-----Original =
Message-----<BR><B>From:</B>=20
veritas-bu-admin AT mailman.eng.auburn DOT edu=20
[mailto:veritas-bu-admin AT mailman.eng.auburn DOT edu] <B>On Behalf Of =
</B>Piszcz,=20
Justin<BR><B>Sent:</B> October 12, 2005 1:23 PM<BR><B>To:</B>=20
veritas-bu AT mailman.eng.auburn DOT edu<BR><B>Subject:</B> [Veritas-bu] =
Recommended=20
number for NUM_DATA_BUFFERS?<BR><BR></DIV></FONT>
<BLOCKQUOTE dir=3Dltr=20
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<DIV class=3DSection1>
<P class=3DMsoNormal><FONT face=3DArial size=3D2><SPAN=20
style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Arial">On a box with 14GB of =
ram, mine is=20
set to 32.<o:p></o:p></SPAN></FONT></P>
<P class=3DMsoNormal><FONT face=3DArial size=3D2><SPAN=20
style=3D"FONT-SIZE: 10pt; FONT-FAMILY: =
Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=3DMsoNormal><FONT face=3DArial size=3D2><SPAN=20
style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Arial">Would increasing this =
number to=20
say 256 increase performance?<o:p></o:p></SPAN></FONT></P>
<P class=3DMsoNormal><FONT face=3DArial size=3D2><SPAN=20
style=3D"FONT-SIZE: 10pt; FONT-FAMILY: =
Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=3DMsoNormal><FONT face=3DArial size=3D2><SPAN=20
style=3D"FONT-SIZE: 10pt; FONT-FAMILY: =
Arial">Justin.<o:p></o:p></SPAN></FONT></P></DIV></BLOCKQUOTE></BODY></HT=
ML>
=00
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