ADSM-L

[ADSM-L] performance issues with clients backing up to a TSM server running on Linux on system z

2009-11-03 12:12:08
Subject: [ADSM-L] performance issues with clients backing up to a TSM server running on Linux on system z
From: Lori Grimaldi <letersky AT US.IBM DOT COM>
To: ADSM-L AT VM.MARIST DOT EDU
Date: Tue, 3 Nov 2009 12:10:25 -0500
Our VM system has one VSWITCH defined which can use either of 2 OSA
interfaces.  One interface is on CHPID FA and the other is on FB.  Both
interfaces come up as "1000 Mbps full duplex".  The FA chpid is showing
fairly high processor utilization and FB is showing almost nothing,
neither of them are showing any dropped packets or other errors.

The high utilization is caused by whatever is using the
interfaces, which in this case is the VSWITCH that the Linux machines
are on.  Apparently the VSWITCH only uses one interface at a time which
is why the FA chpid is quite busy and the FB chpid shows almost nothing.

Does anyone know if there is a way to remedy this situation?  We had mail
servers backing up for 2 days.

Lori G.
Customer Liaison - Linux on System z Team
VM Services Delivery - Information Technology Services Americas, Global
Services
letersky AT us.ibm DOT com

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