Re: large packet loss take2 2.6.31.x

From: Caleb Cushing
Date: Wed Nov 18 2009 - 04:59:11 EST


> Might be the same bugzilla report, I guess. We need to establish if
> these pings reach 192.168.1.1, so a short test and tcpdump without any
> special options just to get a few lost cases as seen on both sides.
> (And ifconfigs before and after the test.)
>
> Btw, could you check with lsmod if usbserial module is loaded before
> this test? I'd like to verify this git bisection result. (If the
> module is loaded or you have CONFIG_USB_SERIAL=y instead of m, try to
> recompile the kernel with this option turned off, for this test.)

sorry for taking so long to get back. busy problematic times.

the dumps and ifconfigs are a bit less 'clean' because the router
serves several other computers (none of which have this issue
(windows)) here's the ifconfig -a from the router.

usbserial is not loaded. actually from reading the patch submission I
suspected the official cause might be off... but I'm not kernel
programmer all I know is where I could see the loss during tests.and I
haven't been able to reproduce over dozens of reboots from this
2.6.31.1-test-00091-gfa31221 kernel.

I totally forgot to do it during the dump's so I hope these are still useful

I haven't rebooted this in a few weeks (the router)

br-lan Link encap:Ethernet HWaddr 00:1D:7E:F8:21:66
inet addr:192.168.1.1 Bcast:192.168.1.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:60613991 errors:0 dropped:0 overruns:0 frame:0
TX packets:67849334 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:2172912561 (2.0 GiB) TX bytes:3999263405 (3.7 GiB)

eth0 Link encap:Ethernet HWaddr 00:1D:7E:F8:21:66
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:144116625 errors:0 dropped:0 overruns:0 frame:0
TX packets:122639966 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:1986512923 (1.8 GiB) TX bytes:1548485891 (1.4 GiB)
Interrupt:4

eth0.0 Link encap:Ethernet HWaddr 00:1D:7E:F8:21:66
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:57318567 errors:0 dropped:0 overruns:0 frame:0
TX packets:62317675 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:3466538358 (3.2 GiB) TX bytes:2132301174 (1.9 GiB)

eth0.1 Link encap:Ethernet HWaddr 00:1D:7E:F8:21:66
inet addr:68.42.198.183 Bcast:255.255.255.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:86777655 errors:0 dropped:0 overruns:0 frame:0
TX packets:60312064 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:205005516 (195.5 MiB) TX bytes:3162930981 (2.9 GiB)

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:168 errors:0 dropped:0 overruns:0 frame:0
TX packets:168 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:19706 (19.2 KiB) TX bytes:19706 (19.2 KiB)

wl0 Link encap:Ethernet HWaddr 00:1D:7E:F8:21:68
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:5114480 errors:0 dropped:0 overruns:0 frame:720205
TX packets:7576790 errors:1902 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:762579947 (727.2 MiB) TX bytes:3981402458 (3.7 GiB)
Interrupt:2 Base address:0x5000

this is the ifconfig -a from my desktop while experiencing the issue

eth0 Link encap:Ethernet HWaddr 00:21:9B:06:4C:C9
inet addr:192.168.1.3 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::221:9bff:fe06:4cc9/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:3465 errors:0 dropped:0 overruns:0 frame:0
TX packets:4951 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
RX bytes:1467320 (1.3 Mb) TX bytes:631808 (617.0 Kb)
Memory:fdfc0000-fdfe0000

lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:624 errors:0 dropped:0 overruns:0 frame:0
TX packets:624 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:64397 (62.8 Kb) TX bytes:64397 (62.8 Kb)


--
Caleb Cushing

http://xenoterracide.blogspot.com
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