|Subject:||High interrupt rate even when using NAPI|
|From:||Steve Modica <modica@xxxxxxx>|
|Date:||Wed, 05 Nov 2003 12:03:46 -0600|
|User-agent:||Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.4b) Gecko/20030425|
Hi All, I just noticed some strange behavior with the tg3 driver.Even with NAPI enabled, during high loads of 1500 byte MTUS, I'm seeing a very high interrupt rate. To move 500kBytes/sec I'm seeing 22k interrupts/sec. It tracks very closely with the actualy throughput.
That amounts to about 1 interrupt per 23 bytes. I figured with NAPI, we should do a lot better than that.
Is there a tuneable or some driver stat that I can track to figure out what's happening here? I'd like to see that interrupt number be a lot lower.
Steve -- Steve Modica MTS-Technical Lead "Give a man a fish, and he will eat for a day, hit him with a fish and he leaves you alone" - me
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