Linux+Sonicwall+window_scale != Throughput
From: http://inodes.org/blog/2006/09/06/tcp-window-scaling-and-kernel-2617/
Took me the better part of 3 days to tackle this one. Abysmal throughput of 6-8KiB/s from behind the Trashwall (reads Sonicwall) for the better part of a month made me spend 2 days tracking this down. The fix, disable window scaling with sysctl (sysctl -w net.ipv4.tcp_window_scaling=0) and everything was right in the world. Suddenly an emerge --sync didn't take for god dam forever and if you were lucky would die 5 mins in.
From: http://inodes.org/blog/2006/09/06/tcp-window-scaling-and-kernel-2617/
Took me the better part of 3 days to tackle this one. Abysmal throughput of 6-8KiB/s from behind the Trashwall (reads Sonicwall) for the better part of a month made me spend 2 days tracking this down. The fix, disable window scaling with sysctl (sysctl -w net.ipv4.tcp_window_scaling=0) and everything was right in the world. Suddenly an emerge --sync didn't take for god dam forever and if you were lucky would die 5 mins in.
Labels: Linux Networking
posted by Cable-Monkey at 5:22 PM
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