On Tue, Apr 19, 2005 at 11:04:10PM +0200, Eivind Hestnes wrote: > It's correct that the card is plugged into a 32-bit 33 Mhz PCI slot. If > i'm not wrong, 33 Mhz PCI slots has a peak transfer rate of 133 MByte/s. > However, when pulling 180 mbit/s without the polling enabled the system > is very little responsive due to the interrupt load. I'll try to > increase the polling frequency too see if this increases the bandwidth > with polling enabled.. Thanks for the advice btw.. > > - E.
You are neglecting bus acquisition cycles as well as bus contention. Likely your 32-bit legacy PCI bus is shared between many devices. 1Gbps for small packets is basically hopeless and you're probably stalling on the bus. Basically, a gigE card in a router you want to perform well in anything but a high-speed PCI-X bus (hopefully little or not contested) has been a terrible waste of money, in my experience. -Bosko _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-performance To unsubscribe, send any mail to "[EMAIL PROTECTED]"
