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<font size="2" face="Dialog">Hi</font> </p>
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<font size="2" face="Dialog">The intel e1000 drivers use interrupt throttling to reduce the load for the kernel. However, if you need a bus update rate of > 2kHz you have to disable this throttling, otherwise you will notice lots of missed datagrams.</font> </p>
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<font size="2" face="Dialog">To disable or lower this interrupt throttling you can give the driver start parameters:</font> </p>
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<font size="2" face="Dialog">1) manually</font> </p>
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<font size="2" face="Dialog"> rmmod e1000</font> </p>
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<font size="2" face="Dialog"> modprobe e1000 RxIntDelay=0 RxAbsIntDelay=0 InterruptThrottleRate=0</font> </p>
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<font size="2" face="Dialog">2) Automagically apply module options (debian systems)</font> </p>
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<font size="2" face="Dialog">Create a file /etc/modprobe.d/e1000-disable-irq-throttling.conf that contains</font> </p>
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<font size="2" face="Dialog"> options e1000 RxIntDelay=0 RxAbsIntDelay=0 InterruptThrottleRate=0</font> </p>
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<font size="2" face="Dialog">With these parameters set we achieve an update rate of 4kHz without dropouts.</font> </p>
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<font size="2" face="Dialog">Regards</font> </p>
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<font size="2" face="Dialog">Martin</font>
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