From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ben Greear Subject: Re: TCP connection stops after high load. Date: Thu, 12 Apr 2007 12:12:22 -0700 Message-ID: <461E8496.2050003@candelatech.com> References: <461D2DEA.4010806@candelatech.com> <461D447C.4070408@candelatech.com> <20070411.134804.50594117.davem@davemloft.net> <461D4DD7.7020207@candelatech.com> <461E7377.3020708@candelatech.com> <20070412201940.7f570b6d.dada1@cosmosbay.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: Andi Kleen , netdev@vger.kernel.org, bcrl@kvack.org To: Eric Dumazet Return-path: Received: from ns2.lanforge.com ([66.165.47.211]:57229 "EHLO ns2.lanforge.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751600AbXDLTNo (ORCPT ); Thu, 12 Apr 2007 15:13:44 -0400 In-Reply-To: <20070412201940.7f570b6d.dada1@cosmosbay.com> Sender: netdev-owner@vger.kernel.org List-Id: netdev.vger.kernel.org Eric Dumazet wrote: > What > "tc -s -d qdisc" > "ifconfig -a" > "cat /proc/interrupts" > "cat /proc/net/sockstat" and > "cat /proc/net/softnet_stat" are telling ? In this test, eth2 is talking to eth3, using something similar to this send-to-self patch: http://www.candelatech.com/oss/sts.patch [root@lf1001-240 ipv4]# ifconfig -a eth0 Link encap:Ethernet HWaddr 00:30:48:89:74:60 inet addr:192.168.100.187 Bcast:192.168.100.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:1672220 errors:0 dropped:0 overruns:0 frame:0 TX packets:1560305 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:151896589 (144.8 MiB) TX bytes:1375280163 (1.2 GiB) Interrupt:17 eth1 Link encap:Ethernet HWaddr 00:30:48:89:74:61 UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) Interrupt:18 eth2 Link encap:Ethernet HWaddr 00:07:E9:1F:CE:02 inet addr:20.20.20.20 Bcast:20.20.20.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:2175144684 errors:0 dropped:2 overruns:0 frame:0 TX packets:2196560123 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:1321380186 (1.2 GiB) TX bytes:2274982574 (2.1 GiB) Base address:0xd000 Memory:d0000000-d0020000 eth3 Link encap:Ethernet HWaddr 00:07:E9:1F:CE:03 inet addr:20.20.20.30 Bcast:20.20.20.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:2196315966 errors:0 dropped:0 overruns:0 frame:0 TX packets:2174900538 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:2257901986 (2.1 GiB) TX bytes:1304493504 (1.2 GiB) Base address:0xd100 Memory:d0020000-d0040000 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:1159378 errors:0 dropped:0 overruns:0 frame:0 TX packets:1159378 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:1133646590 (1.0 GiB) TX bytes:1133646590 (1.0 GiB) [root@lf1001-240 ipv4]# tc -s -d qdisc qdisc pfifo_fast 0: dev eth0 bands 3 priomap 1 2 2 2 1 2 0 0 1 1 1 1 1 1 1 1 Sent 1367521025 bytes 1324808 pkt (dropped 0, overlimits 0 requeues 0) rate 0bit 0pps backlog 0b 0p requeues 0 qdisc pfifo_fast 0: dev eth1 bands 3 priomap 1 2 2 2 1 2 0 0 1 1 1 1 1 1 1 1 Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0) rate 0bit 0pps backlog 0b 0p requeues 0 qdisc pfifo_fast 0: dev eth2 bands 3 priomap 1 2 2 2 1 2 0 0 1 1 1 1 1 1 1 1 Sent 1815657070136 bytes 1536674488 pkt (dropped 0, overlimits 0 requeues 1448094) rate 0bit 0pps backlog 0b 0p requeues 1448094 qdisc pfifo_fast 0: dev eth3 bands 3 priomap 1 2 2 2 1 2 0 0 1 1 1 1 1 1 1 1 Sent 1752033393324 bytes 1536906566 pkt (dropped 0, overlimits 0 requeues 1063672) rate 0bit 0pps backlog 0b 0p requeues 1063672 [root@lf1001-240 ipv4]# cat /proc/interrupts CPU0 CPU1 0: 46020594 44501954 IO-APIC-edge timer 1: 9 0 IO-APIC-edge i8042 7: 0 0 IO-APIC-edge parport0 8: 1 0 IO-APIC-edge rtc 9: 0 0 IO-APIC-level acpi 12: 96 0 IO-APIC-edge i8042 14: 394023 407282 IO-APIC-edge ide0 16: 0 0 IO-APIC-level uhci_hcd:usb4 17: 1134346 1034006 IO-APIC-level uhci_hcd:usb3, eth0 18: 81605 83739 IO-APIC-level libata, uhci_hcd:usb2, eth1 19: 0 0 IO-APIC-level uhci_hcd:usb1, ehci_hcd:usb5 20: 53056128 46598235 IO-APIC-level eth2 21: 47534577 52189674 IO-APIC-level eth3 NMI: 0 0 LOC: 90485383 90485382 ERR: 0 MIS: 0 [root@lf1001-240 ipv4]# cat /proc/net/sockstat sockets: used 334 TCP: inuse 27 orphan 0 tw 0 alloc 27 mem 360 UDP: inuse 12 RAW: inuse 0 FRAG: inuse 0 memory 0 [root@lf1001-240 ipv4]# cat /proc/net/softnet_stat d58236f1 00000000 023badc3 00000000 00000000 00000000 00000000 00000000 0004ef01 3a4354a1 00000000 01b57b4b 00000000 00000000 00000000 00000000 00000000 0005445f Thanks, Ben > > - > To unsubscribe from this list: send the line "unsubscribe netdev" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html -- Ben Greear Candela Technologies Inc http://www.candelatech.com