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Date:      Tue, 31 Oct 2000 14:41:13 -0800 (PST)
From:      Jin Guojun (DSD staff) <jin@george.lbl.gov>
To:        freebsd-hardware@FreeBSD.ORG
Subject:   What is the main task chewing CPU in GigE driver
Message-ID:  <200010312241.e9VMfDr07348@portnoy.lbl.gov>

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This is following up a previous SysKonnect/NetGear/Intel GigE discussion
on CPU utilization. I heard people talking that using Jumbo Frame on these
GigE adapters will use less CPU time.  Since I have not gotten a chance
to paly the Jumbo Frame on these NICs, and it seems all these cards
have the similar CPU utilization issue, I would like to know which part
of the drive process that chews more CPU when using the smaller MTU than
using the larger MTU (assume without zero memory copy)?

	-Jin


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