On Thu, 03 Feb 2005 06:21:46 +0100
Christian Schmid <webmaster@xxxxxxxxxxxxxx> wrote:
Actually, thats my problem. Single streams are too slow! Before I had buffers up to 500 KB. This was
very nice to CPU because I only needed to "push" more data once in 5 seconds. I am doing this every
second now... *sigh* well maybe you might just want to add a /proc file in order to configure this
btw: Another problem I am experiencing is that downloads suddenly break in speed from 360 kb/sec to
8-12 kb/sec. 5 seconds later they stall completely. But the interesting part is, that the send-queue
is completely full (checked with a grep in netstat). This looks like as if the receiver is just too
slow. But this is not the case. That makes it rather funny. The receiver is waiting with an empty
pipe but linux doesn't send. What could this be?
Are you using a board that support TCP Segmentation Offload. The problem may
well be that
before we were not doing congestion control properly with TSO. A pre-2.6.8
host with TSO was violating
all sorts of RFC's and unfairly monopolizing bandwidth.