![]() | ||||||||||
Messages in this thread |
.. > The site www.everymac.com is still not browseable until > setting /proc/sys/net/ipv4/tcp_window_scaling===0. > > There's one other difference I see in the tcpdump traces. > The first packets from each trace below show different > values for "wscale". The old (working) kernels use "wscale 2", > whereas 2.6.17 uses "wscale 6". In both cases, the value > seen in /proc/sys/net/ipv4/tcp_adv_win_scale is 2. Okay. More progress here. The calculation of the "wscale" values is based on the "tcp_rmem" sysctl numbers. The defaults for these *differ* between 2.6.16.18 and 2.6.17-rc*. 2.6.16: 4096 87380 174760 2.6.17: 4096 87380 2097152 If I change the tcp_rmem setting on 2.6.17 to match the old value, then the website www.everymac.com becomes accessible again: echo 4096 87380 174760 > /proc/sys/net/ipv4/tcp_rmem Looking at diffs between 2.6.16 and 2.6.17, I see a big rework of the tcp_rmem code in linux/net/ipv4/tcp.c Looks like something got broken there, or possibly the wscale calculations have a bug that is only triggered by the new rmem values ?? - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | |||||||||
| Last update: 2006-06-13 17:00 [from the cache] ©2003-2008 | ||||||||||