Check the iSCSI TCP read/write size
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For iSCSI, you can check the TCP read/write size to determine if the size setting is creating a performance issue. If the size is the source of an issue, you can correct it.
What you'll need
Advanced privilege level commands are required for this task.
Steps
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Change to advanced privilege level:
set -privilege advanced
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Check the TCP window size setting:
vserver iscsi show -vserv,er vserver_name -instance
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Modify the TCP window size setting:
vserver iscsi modify -vserver vserver_name -tcp-window-size integer
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Return to administrative privilege:
set -privilege admin
Example
The following example changes the TCP window size of SVM1
to 131,400 bytes:
cluster1::*> vserver iscsi modify -vserver vs1 -tcp-window-size 131400