>-----Original Message----- >From: Gavin Hamill [mailto:[email protected]] >Sent: Monday, August 09, 2010 5:23 AM >To: [email protected] >Subject: [E1000-devel] 5% dropped packets under high load with e1000e > >Hi all, > >I'm running Debian Lenny 64-bit (kernel 2.6.26, e1000e version >0.3.3.3-k2) on a couple of routers which are dropping an >alarming number >of packets, and wondered if I could consult the list about it? > >The machines are good quality HP DL320 G5's each with two dual-port >PCI-e x4 82571EB cards, so 4 x 82571EB ports in total on eth0 -> eth3 >(plus 2 on board eth4,eth5 for management) > >eth2 + eth3 are part of 'bond1' > >cor4:~# ethtool -S eth2 | grep -v ": 0" >NIC statistics: > rx_packets: 276763917957 > tx_packets: 471895773086 > rx_bytes: 342602999180888 > tx_bytes: 588662613526252 > rx_broadcast: 132740615 > tx_broadcast: 29 > rx_multicast: 63675224 > tx_multicast: 1398527 > rx_errors: 83 > multicast: 63675224 > rx_crc_errors: 83 > rx_missed_errors: 2427853215 > tx_restart_queue: 200354 > rx_long_byte_count: 342602999180888 > rx_csum_offload_good: 276600305105 > rx_csum_offload_errors: 21438 > >rx_missed_errors is rising by thousands of packets per second; the RX >ring size was 256 bytes - I increased it to 2048 but it has made no >difference. > >The machine is doing a large amount of network I/O - eth2 + eth3 each >average 500Mbps/50k pps on both rx+tx. > > 13:06:51 up 424 days, 21:12, 3 users, load average: 0.05, 0.14, 0.10 > >My research so far suggests that rx_missed_errors could be as a result >of inadequate bus bandwidth... the NICs seem to be configured correctly >for optimum usage: > >1269:1523052557 1520343556 1579949975 1579235679 PCI-MSI-edge eth3 >1270:4254381790 4256595268 4153628417 4154259718 PCI-MSI-edge eth2 >1271: 193042289 193698664 192770825 192359423 PCI-MSI-edge eth1 >1272:3932743448 3931616894 3976527168 3976601952 PCI-MSI-edge eth0 > >External link to preserve the ASCII formatting: > >http://194.24.251.10/lspci-vv.txt > >... from my rudimentary reading, it seems to be OK.. >Capabilities: [d0] >Message Signalled Interrupts: Mask- 64bit+ Queue=0/0 Enable+ > >Interrupts and context-switches are remarkably low: > >cor4:~# vmstat 1 >procs -----------memory---------- ---swap-- -----io---- -system-- >----cpu---- > r b swpd free buff cache si so bi bo in cs us sy >id wa > 0 0 60 1057408 164120 331416 0 0 0 0 0 > 0 1 4 >95 0 > 0 0 60 1056608 164120 331440 0 0 0 0 14639 1065 1 >13 86 0 > 0 0 60 1056956 164120 331440 0 0 0 0 15794 1216 2 >15 83 0 > 0 0 60 1056980 164120 331440 0 0 0 0 13741 920 2 >6 92 0 > 0 0 60 1056980 164120 331440 0 0 0 0 18241 953 2 >9 89 0 > 0 0 60 1056748 164120 331440 0 0 0 0 13219 1374 5 >15 80 0 > >Neither eth0 nor eth1 providing bond0 (much lower traffic) are dropping >any packets. > >Any advice warmly welcomed! :) > >gdh > > > > > >--------------------------------------------------------------- >--------------- >This SF.net email is sponsored by > >Make an app they can't live without >Enter the BlackBerry Developer Challenge >http://p.sf.net/sfu/RIM-dev2dev >_______________________________________________ >E1000-devel mailing list >[email protected] >https://lists.sourceforge.net/lists/listinfo/e1000-devel >To learn more about Intel® Ethernet, visit >http://communities.intel.com/community/wired > Hello,
How do you have flow control configured for these ports? Has this been a problem since you've set the system up or is this new? If new, what has changed recently in your environment? Thanks, Carolyn Carolyn Wyborny Linux Development LAN Access Division Intel Corporation ------------------------------------------------------------------------------ This SF.net email is sponsored by Make an app they can't live without Enter the BlackBerry Developer Challenge http://p.sf.net/sfu/RIM-dev2dev _______________________________________________ E1000-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/e1000-devel To learn more about Intel® Ethernet, visit http://communities.intel.com/community/wired
