Re: HP-UX rcp slow between nodes only for a specific account (293 Views)
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Frequent Advisor
hh454
Posts: 48
Registered: ‎08-28-2006
Message 1 of 4 (350 Views)
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HP-UX rcp slow between nodes only for a specific account

 This issue is a reproducible scenario where transferring a file between one HPUX node and another using rcp is very slow only for the oracle UNIX account, but fast for other UNIX accounts. Network port speeds/duplex have been reviewed.

Any Ideas? 

We specify a location using rcp so it's not a specific desitination directory.

Thanks in advance!

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Frequent Advisor
hh454
Posts: 48
Registered: ‎08-28-2006
Message 2 of 4 (328 Views)

Re: HP-UX rcp slow between nodes only for a specific account

A little more info:

Same rhosts file in use

We traced the network whlie this was happening and only noticed fewer packets per minute. Not a tcp negociation or xfer problem.

From a high level the only differences we can come up with are the group membership, ulimit and home dir.

 

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Honored Contributor
Matti_Kurkela
Posts: 6,271
Registered: ‎12-02-2001
Message 3 of 4 (317 Views)

Re: HP-UX rcp slow between nodes only for a specific account

If the same destination is not slow for other users, how about the source?

 

You mentioned the slowdown appears when running as the oracle user. If the source is on the same physical disk/LUN as the database, and the database is very busy, the disk/LUN might spend most of its time with performing the I/O operations of the database, and only occasionally (in computer timescale) have enough free time to read data for the rcp command.

MK
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Frequent Advisor
hh454
Posts: 48
Registered: ‎08-28-2006
Message 4 of 4 (293 Views)

Re: HP-UX rcp slow between nodes only for a specific account

We did some additional testing. It's starting to  look like it may be a network DMZ issue.

Thanks for replying.

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