Re: Solution: TX performance problems with 3Com 905C cards

2004-03-01 Thread Marian Durkovic
On Sun, 22 Feb 2004, David Burns wrote: > The modification was to reduce the NIC interrupt rate via a rudimentary > hardware polling scheme based on the 3c905x countdown timer. Well, the number of interrupts per second is really much higher than e.g. with the fxp driver: xl driver TX: 13500 in

Re: Solution: TX performance problems with 3Com 905C cards

2004-02-22 Thread Mike Silbersack
On Sun, 22 Feb 2004, David Burns wrote: > Probably should have someone with more understanding of kernel drivers > check whether it has any application outside my home office... :-) > > David If you have a patch, I'd be glad to merge it into the driver (if it works well, of course.) Mike "Silby

Re: Solution: TX performance problems with 3Com 905C cards

2004-02-21 Thread David Burns
Mike Silbersack wrote: On Thu, 19 Feb 2004, Marian Durkovic wrote: Hi all, the performance problem seems to disappear, when the hardware checksuming for TX direction is disabled (RX hw checksuming still on). Here are the results: Hm... This, combined with Matt blaming the Tx checksum for c

Re: Solution: TX performance problems with 3Com 905C cards

2004-02-19 Thread Mike Silbersack
On Thu, 19 Feb 2004, Marian Durkovic wrote: > Hi all, > > >the performance problem seems to disappear, when the hardware checksuming > for TX direction is disabled (RX hw checksuming still on). > Here are the results: Hm... This, combined with Matt blaming the Tx checksum for corrupting pac

Solution: TX performance problems with 3Com 905C cards

2004-02-19 Thread Marian Durkovic
Hi all, the performance problem seems to disappear, when the hardware checksuming for TX direction is disabled (RX hw checksuming still on). Here are the results: otherbox -> box with 3c905C: Bytes Real s CPU s Real-MBit/s CPU-MBit/s Calls Real-C/s CPU-C/s l40960 34.80