Here's the thread on netdev where we discussed this issue: http://marc.info/?l=linux-netdev&m=121545498313619&w=2 Here is where I asked about an api to set a socket buf minimum: http://marc.info/?l=linux-netdev&m=121554794432038&w=2 There are many subtleties, and I suggest anyone who wants to try to fix this code should read the email thread. The netdev people were pretty insistent that we turn on autotuning; David Miller said the old behavior was equivalent to "turn[ing] off half of the TCP stack." -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html