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[Veritas-bu] Backups running slower for no apparent reason?
2004-12-07 08:36:14
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Subject: |
[Veritas-bu] Backups running slower for no apparent reason? |
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From: |
Mathew.Kirsch AT PaeTec DOT com (Kirsch, Mathew (Matt)) |
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Date: |
Tue, 7 Dec 2004 08:36:14 -0500 |
Netbackup 4.5 MP7 on a Sun V880, Solaris 8 with 8 DLT7000, 4 LTO, and 4
LTO2.
After-hours backups are taking 25-40% longer than they were last Friday.
Nothing changed between Friday and Saturday, but backups that were taking 4
hours now take 5-1/2 hours.
On Thursday, we increased the value of NUMBER_DATA_BUFFERS from 16 to 32. We
also increased shmsys:shminfo_shmmax in /etc/system to 1073741824. The
system was rebooted.
Everything was hunky-dory on Friday. Nothing was any faster, but nothing was
any slower either. On Friday night, I started a manual backup that should
have taken 5 hours. It was still going 7-1/2 hours later. Now, all backups
are running way longer than they used to.
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