Looking for some guidance to improve backup session times.
The time it takes to backup our e-mail servers (4-way processor H70 AIX
4.3.3 with 2GB RAM. TSM client is 4.1.2.0) is becoming unacceptable and
unworkable.
Currently, backup sessions are sometimes taking more than 16-hours (as I
send
as a kind of comparison you can see here the same snippet for our GIS
server, hp9000/j6000 1GB/20GB tsm client 4.1, much smaller but... tsm
server is a rs6k/f50 2x332 MHz 640 MB, network is ATM/155 Mbps
Total number of objects inspected: 333 895
Total number of objects backed up:1 349
Total
: Zoltan Forray/AC/VCU [mailto:[EMAIL PROTECTED]]
Sent: Friday, August 24, 2001 11:25 AM
To: [EMAIL PROTECTED]
Subject: Long, long, long backup sessions
Looking for some guidance to improve backup session times.
The time it takes to backup our e-mail servers (4-way processor H70 AIX
4.3.3
]
cc:
Subject:Long, long, long backup sessions
Looking for some guidance to improve backup session times.
The time it takes to backup our e-mail servers (4-way processor H70 AIX
4.3.3 with 2GB RAM. TSM client is 4.1.2.0) is becoming unacceptable and
unworkable.
Currently
To: [EMAIL PROTECTED]
Subject: Re: Long, long, long backup sessions
Consider using the 4.2 client's journal backup feature, which is intended
to eliminate the need to scan the file system for changed files.
The elapsed time represents the total time from the beginning of the
operation to the end
: Long, long, long backup sessions
Looking for some guidance to improve backup session times.
The time it takes to backup our e-mail servers (4-way processor H70 AIX
4.3.3 with 2GB RAM. TSM client is 4.1.2.0) is becoming unacceptable and
unworkable.
Currently, backup sessions are sometimes
The time it takes to backup our e-mail servers (4-way processor H70 AIX
4.3.3 with 2GB RAM. TSM client is 4.1.2.0) is becoming unacceptable and
unworkable.
...
Yes, I understand the LARGE amount of OBJECTS INSPECTED is an issue. But,
the current data tells me it took over 8-hours from the start
: Zoltan Forray/AC/VCU [mailto:[EMAIL PROTECTED]]
Sent: Friday, August 24, 2001 10:25 AM
To: [EMAIL PROTECTED]
Subject: Long, long, long backup sessions
Looking for some guidance to improve backup session times.
The time it takes to backup our e-mail servers (4-way processor H70 AIX
4.3.3 with 2GB
: Dist Stor Manager
To: [EMAIL PROTECTED]
cc:
Subject:Re: Long, long, long backup sessions
Consider using the 4.2 client's journal backup feature, which is intended
to eliminate the need to scan the file system for changed files.
The elapsed time represents
to ADSM: Dist Stor Manager
To: [EMAIL PROTECTED]
cc:
Subject:Re: Long, long, long backup sessions
Consider using the 4.2 client's journal backup feature, which is intended
to eliminate the need to scan the file system for changed files.
The elapsed time
-
From: Zoltan Forray/AC/VCU [mailto:[EMAIL PROTECTED]]
Sent: Friday, August 24, 2001 8:25 AM
To: [EMAIL PROTECTED]
Subject: Long, long, long backup sessions
Looking for some guidance to improve backup session times.
The time it takes to backup our e-mail servers (4-way processor H70 AIX
4.3.3
Sorry my math was off by a factor of 100.. :-)
283000/522000 = 5421 seconds = 90.35 minutes = 1.5 hours..
So perhaps it's not that big a network issue afterall.. but still I'd
look into the network throughput performance.
Gerald Wichmann
System Engineer
StorageLink
408-844-8893 (v)
First, I want to thank everyone for their feedback.
Since I am not an AIX person, I passed these responses to my AIX guru.
Here are *HIS* reponses (noted with ###:
I would suggest the problem is nothing but the amount of files that need
to be processed. I have one client with 3 million +
Zoltan, these stats you sent:
Session Duration: 7:06:49
Object Inserted: 78,979
Size of Objects: 2,480,911
Idle Wait Time:1:03:27
Comm Wait Time:3:39:06
say that number-of-files is the biggest issue.
Network speed isn't greate, but I see a
PROTECTED]
Subject: Re: Long, long, long backup sessions
First, I want to thank everyone for their feedback.
Since I am not an AIX person, I passed these responses to my AIX guru.
Here are *HIS* reponses (noted with ###:
I would suggest the problem is nothing but the amount of files that need
Quoting Zoltan Forray/AC/VCU [EMAIL PROTECTED]:
The Elapsed processing time is confusing. Is it trying to tell me it
only took 3-minutes to actually transfer the 2.83GB ??
The elapsed times reported by 4.1.2.0 clients are simply wrong. This
is a known bug in that client level. The bug itself
...We recently upgraded from 2-CPU to 4. It did not improve the backup times,
though.
...
Compression should not be an issue since it can use 4-fast CPU's.
If you are running single-threaded, you'll be using one CPU.
Richard Sims, BU
## Will consider addressing network speed issue. Can't do much. It is a
100 switch. Compression should not be an issue since it can use 4-fast
CPU's.
Even if ur switch is at 100mbs.And ur network I/F is at
auto-negotiation(default)
then also ur xfer speed will be at low level.Thats the
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