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file trsfering is very slow

HP UNIX Professionals
Frequent Advisor

file trsfering is very slow

Hi Guys,
I am uing 9000/D250 HPUX Box, During the Netbackup(TSM) file trsfering is very slow form the server. When i cheked the perfoment of system is fine. Anybody tell me what are the command for checking the Perfoment of network, IO and CPU.
9 REPLIES
Michael Steele_2
Honored Contributor

Re: file trsfering is very slow

Check your speed and duplex to all NIC's used in the route.

lanadmin -x ppa
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Steven E. Protter
Exalted Contributor

Re: file trsfering is very slow

Shalom,

netbackup relies on /etc/hosts networking and not DNS. If your nsswitch.conf goes to DNS before files, this could explain the delay.

You need /etc/hosts entries for the server itself and it is helpful to have the hostname of the netbackup system in /etc/hosts as well.

Measure system performance:
http://www.hpux.ws/?p=6

Memory leak detector
http://www.hpux.ws/?p=8

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TTr
Honored Contributor

Re: file trsfering is very slow

What is you definition of "file trsfering is very slow form the server"? The built-in NIC on the D250 is 10BaseT (unless you are using an add-on HSC NIC at 100BaseT). You also need to check on other factors that may be affecting the LAN traffic such as multistreaming and concurrent backup clients on the same segment with the D250 or the media server. Multiplexing within the D250 can also impact disk reading which can result poor client backup throughput.
Tingli
Esteemed Contributor

Re: file trsfering is very slow

netstat -in to see whether there is Ierrs, Oerrs and Collis. If Collis is high then it means the duplex or rate setting need to be adjusted.
HP UNIX Professionals
Frequent Advisor

Re: file trsfering is very slow

Hi Tingli,
Cab u pls provide the command to chetck the collission.
Bill Hassell
Honored Contributor

Re: file trsfering is very slow

To see the stats for the card, use lanadmin -g and the lan number. I am going to assume you have only one LAN card, so the command is:

lanadmin -g 0

Now when you say slow, are you comparing the speed to an earlier backup which ran much faster? The built-in card is 10 Mbits and will ALWAYS have collisions. The average maximum throughput of this card is about 600 KBytes/sec, so a gigabyte of data will take about 25 minutes. That is painfully slow compared to modern systems with 1000 Mbit cards (which cannot be installed in this very old system).

How much data and how long does it take? Do you have only one LAN card in the system? Is the Netbackup destination on a WAN (long distance) connection?


Bill Hassell, sysadmin
HP UNIX Professionals
Frequent Advisor

Re: file trsfering is very slow

Hi Guys,

i need commands to check the collision
SUDHAKAR_18
Trusted Contributor

Re: file trsfering is very slow

How the backup is happening?

over SAN / LAN ?

OldSchool
Honored Contributor

Re: file trsfering is very slow

well, since the original poster hasn't been answering the questions put to him, the assumption would be that he's doing a LAN backup over the builtin 10BaseT (10Mb) card.

as for the checking collisions, a previous reply told you to use "netstat -in" I believe.