From: Ben Greear <greearb@candelatech.com>
To: Eric Dumazet <dada1@cosmosbay.com>
Cc: Andi Kleen <andi@firstfloor.org>, netdev@vger.kernel.org, bcrl@kvack.org
Subject: Re: TCP connection stops after high load.
Date: Thu, 12 Apr 2007 12:12:22 -0700 [thread overview]
Message-ID: <461E8496.2050003@candelatech.com> (raw)
In-Reply-To: <20070412201940.7f570b6d.dada1@cosmosbay.com>
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
>
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--
Ben Greear <greearb@candelatech.com>
Candela Technologies Inc http://www.candelatech.com
next prev parent reply other threads:[~2007-04-12 19:13 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-04-11 18:50 TCP connection stops after high load Ben Greear
2007-04-11 20:26 ` Ben Greear
2007-04-11 20:48 ` David Miller
2007-04-11 21:06 ` Ben Greear
2007-04-11 21:11 ` David Miller
2007-04-11 21:31 ` Ben Greear
2007-04-11 21:39 ` David Miller
2007-04-12 2:44 ` SANGTAE HA
2007-04-12 1:06 ` Benjamin LaHaise
2007-04-12 14:48 ` Andi Kleen
2007-04-12 17:59 ` Ben Greear
2007-04-12 18:19 ` Eric Dumazet
2007-04-12 19:12 ` Ben Greear [this message]
2007-04-12 20:41 ` Eric Dumazet
2007-04-12 21:36 ` Ben Greear
2007-04-13 7:09 ` Evgeniy Polyakov
2007-04-13 16:42 ` Ben Greear
2007-04-13 16:10 ` Daniel Schaffrath
2007-04-13 16:41 ` Eric Dumazet
2007-04-14 4:21 ` Herbert Xu
2007-04-14 4:25 ` David Miller
2007-04-14 5:31 ` Eric Dumazet
2007-04-14 5:37 ` David Miller
2007-04-11 20:41 ` David Miller
2007-04-12 6:12 ` Ilpo Järvinen
-- strict thread matches above, loose matches on Subject: below --
2007-04-12 21:11 Robert Iakobashvili
2007-04-12 21:15 ` David Miller
2007-04-15 12:14 ` Robert Iakobashvili
2007-04-15 15:31 ` John Heffner
2007-04-15 15:49 ` Robert Iakobashvili
2007-04-16 18:07 ` John Heffner
2007-04-16 18:51 ` Robert Iakobashvili
2007-04-16 19:11 ` John Heffner
2007-04-16 19:17 ` David Miller
2007-04-16 19:15 ` David Miller
2007-04-17 7:58 ` Robert Iakobashvili
2007-04-17 19:39 ` David Miller
2007-04-17 19:47 ` John Heffner
2007-04-17 19:51 ` David Miller
2007-04-17 19:58 ` Robert Iakobashvili
2007-04-15 13:52 ` Robert Iakobashvili
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