Stephen, I get your patch from http://lwn.net/Articles/54815/ for 2.6.X and I rewrote it for 2.4.23. Tested with 2.4.23 on high load servers. I have no more "Too much work at interrupt". I dropped it on ftp://ftp.ovh.net/made-in-ovh/8139too.c-2.4-0.9.27 Hope it helps. Octave before: ------- # ps auxw root 256 0.0 0.0 0 0 ? SW Nov28 0:00 [eth0] # ifconfig RX packets:40940899 errors:250542 dropped:7052 overruns:250542 frame:0 TX packets:33057049 errors:0 dropped:0 overruns:20 carrier:0 # dmesg eth0: Setting 100mbps full-duplex based on auto-negotiated partner ability 41e1. nfs: server X.X.X.X not responding, still trying nfs: server X.X.X.X OK eth0: Too much work at interrupt, IntrStatus=0x0040. with NAPI --------- RX packets:428253 errors:0 dropped:0 overruns:0 frame:0 TX packets:357949 errors:0 dropped:0 overruns:0 carrier:0 8139too Fast Ethernet driver 0.9.27 PCI: Found IRQ 11 for device 00:0b.0 eth0: RealTek RTL8139 at 0xec00, 00:e0:4c:91:03:b0, IRQ 11 eth0: Identified 8139 chip type 'RTL-8100B/8139D' - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html