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[Veritas-bu] How to troubleshoot slow restore
2004-10-27 11:24:44
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Subject: |
[Veritas-bu] How to troubleshoot slow restore |
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From: |
scoco AT arl.army DOT mil (Coco, Samuel (Cont, ARL/CISD)) |
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Date: |
Wed, 27 Oct 2004 11:24:44 -0400 |
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How many files are in this image? The larger the number the s-l-o-w-e-r
the thruput.
=20
=20
Thank you,
=20
=20
Samuel J. Coco, STG
Functional Area Manager, ARL
Sr UNIX Administrator
BELL 301 394-1151 DSN 290
CELL (B) 240 398-7121 / (H)443 496-1623
HOME 410 604-2415
Email scoco AT arl.army DOT mil
-----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 Denton,
Kevin M
Sent: Wednesday, October 27, 2004 11:05 AM
To: veritas-bu AT mailman.eng.auburn DOT edu
Subject: [Veritas-bu] How to troubleshoot slow restore
=09
=09
Hello folks,
=20
We're trying to figure out why a restore is running at about
50KB/s as apposed to the normal 5-8MB/s we are used to seeing.
=20
The restore is from one image on one tape.
We are in a Sun environment, using an STK L700 with DLT7000
drives.
We use a multiplex setting of 3 on this robot.
There is no other activity besides this one restore on the media
server or the client being restored to.
No iowait on either system.
CPU utilization is hardly being touched on either system.
No network collisions. Both servers are set to 100 Full.
=20
We have no idea why this restore is so SLOW.
=20
Any helpful hints for what to check?
=20
Thanks,
=20
Kevin Denton
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<DIV><SPAN class=3D769372215-27102004><FONT face=3DArial color=3D#0000ff =
size=3D2>How=20
many files are in this image? The larger the number the =
s-l-o-w-e-r the=20
thruput.</FONT></SPAN></DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV align=3Dleft>
<DIV align=3Dleft><FONT face=3DArial size=3D2>Thank you,</FONT></DIV>
<DIV align=3Dleft><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV align=3Dleft><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV align=3Dleft><FONT face=3DArial size=3D2>Samuel J. Coco, =
STG</FONT></DIV>
<DIV align=3Dleft><FONT face=3DArial size=3D2>Functional Area Manager,=20
ARL</FONT></DIV>
<DIV align=3Dleft><FONT face=3DArial size=3D2>Sr UNIX =
Administrator</FONT></DIV>
<DIV align=3Dleft><FONT face=3DArial size=3D2>BELL =
301=20
394-1151 DSN 290</FONT></DIV>
<DIV align=3Dleft><FONT face=3DArial size=3D2>CELL (B) 240 398-7121 / =
(H)443=20
496-1623</FONT></DIV>
<DIV align=3Dleft><FONT face=3DArial =
size=3D2>HOME 410=20
604-2415</FONT></DIV>
<DIV align=3Dleft><FONT face=3DArial size=3D2>Email <A=20
href=3D"mailto:scoco AT arl.army DOT mil">scoco AT arl.army DOT
mil</A></FONT></DIV></D=
IV>
<BLOCKQUOTE dir=3Dltr style=3D"MARGIN-RIGHT: 0px">
<DIV></DIV>
<DIV class=3DOutlookMessageHeader lang=3Den-us dir=3Dltr =
align=3Dleft><FONT=20
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>Denton,=20
Kevin M<BR><B>Sent:</B> Wednesday, October 27, 2004 11:05 =
AM<BR><B>To:</B>=20
veritas-bu AT mailman.eng.auburn DOT edu<BR><B>Subject:</B> [Veritas-bu] How =
to=20
troubleshoot slow restore<BR><BR></FONT></DIV>
<DIV><SPAN class=3D979225514-27102004><FONT face=3DArial =
color=3D#0000ff=20
size=3D2>Hello folks,</FONT></SPAN></DIV>
<DIV><SPAN class=3D979225514-27102004><FONT face=3DArial =
color=3D#0000ff=20
size=3D2></FONT></SPAN> </DIV>
<DIV><SPAN class=3D979225514-27102004><FONT face=3DArial =
color=3D#0000ff=20
size=3D2>We're trying to figure out why a restore is running at =
about=20
50KB/s as apposed to the normal 5-8MB/s we are used to=20
seeing.</FONT></SPAN></DIV>
<DIV><SPAN class=3D979225514-27102004></SPAN><SPAN=20
class=3D979225514-27102004><FONT face=3DArial color=3D#0000ff=20
size=3D2></FONT></SPAN> </DIV>
<DIV><SPAN class=3D979225514-27102004><FONT face=3DArial =
color=3D#0000ff size=3D2>The=20
restore is from one image on one tape.</FONT></SPAN></DIV>
<DIV><SPAN class=3D979225514-27102004><SPAN =
class=3D979225514-27102004><FONT=20
face=3DArial color=3D#0000ff size=3D2>We are in a Sun environment, =
using an STK L700=20
with DLT7000 drives.</FONT></SPAN></SPAN></DIV>
<DIV><SPAN class=3D979225514-27102004><FONT face=3DArial =
color=3D#0000ff size=3D2>We=20
use a multiplex setting of 3 on this robot.</FONT></SPAN></DIV>
<DIV><SPAN class=3D979225514-27102004><FONT face=3DArial =
color=3D#0000ff=20
size=3D2>There is no other activity besides this one restore on the =
media=20
server or the client being restored to.</FONT></SPAN></DIV>
<DIV><SPAN class=3D979225514-27102004><FONT face=3DArial =
color=3D#0000ff size=3D2>No=20
iowait on either system.</FONT></SPAN></DIV>
<DIV><SPAN class=3D979225514-27102004><FONT face=3DArial =
color=3D#0000ff size=3D2>CPU=20
utilization is hardly being touched on either =
system.</FONT></SPAN></DIV>
<DIV><SPAN class=3D979225514-27102004><FONT face=3DArial =
color=3D#0000ff size=3D2>No=20
network collisions. Both servers are set to 100 =
Full.</FONT></SPAN></DIV>
<DIV><SPAN class=3D979225514-27102004><FONT face=3DArial =
color=3D#0000ff=20
size=3D2></FONT></SPAN> </DIV>
<DIV><SPAN class=3D979225514-27102004><FONT face=3DArial =
color=3D#0000ff size=3D2>We=20
have no idea why this restore is so SLOW.</FONT></SPAN></DIV>
<DIV><SPAN class=3D979225514-27102004><FONT face=3DArial =
color=3D#0000ff=20
size=3D2></FONT></SPAN> </DIV>
<DIV><SPAN class=3D979225514-27102004><FONT face=3DArial =
color=3D#0000ff size=3D2>Any=20
helpful hints for what to check?</FONT></SPAN></DIV>
<DIV><SPAN class=3D979225514-27102004><FONT face=3DArial =
color=3D#0000ff=20
size=3D2></FONT></SPAN> </DIV>
<DIV><SPAN class=3D979225514-27102004><FONT face=3DArial =
color=3D#0000ff=20
size=3D2>Thanks,</FONT></SPAN></DIV>
<DIV><SPAN class=3D979225514-27102004><FONT face=3DArial =
color=3D#0000ff=20
size=3D2></FONT></SPAN> </DIV>
<DIV><SPAN class=3D979225514-27102004><FONT face=3DArial =
color=3D#0000ff=20
size=3D2>Kevin Denton</FONT></SPAN></DIV></BLOCKQUOTE></BODY></HTML>
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