Messages in this thread | | | Date | Sat, 10 Aug 2002 18:55:58 +0100 | From | Jamie Lokier <> | Subject | Re: about the tuning of eepro100 |
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Pawe? Krawczyk wrote: > > so i think the limit is at the eepro100 card. is there any way to > > improve the throughput? or someone got a higher throughput then > > that? the eepro100 chip is 82559. > > Use e100 driver from Intel [1] with the following parameters: > > insmod e100.o BundleSmallFr=1 IntDelay=0x600 ucode=1 > > Intel's driver supports all the interrupt saving features (interrupt > delay and small packet bundling) present in EEPro/100 cards. The driver > is now GPL, so it should get back to the mainstream kernel.
I don't think you will get better than 90% performance, but if you do please let me know! I have written another e100 driver, in an attempt to transmit and receive small packets at the maximum possible rate.
In tests, it would not even transmit at 100% small packets on our 82558. (I didn't do that test on our 82559).
Ah well..
Curiously, I found that turning on the interrupt saving microcode slows the cards down. It lessens the load on the mainboard CPU, but I am not using interrupts, I'm polling the memory descriptors 100% of the time, so the interrupt saving microcode shouldn't affect the mainboard CPU. It does lower the throughput though.
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