Subject: Re: Strange (?) tcp_cwm behavior
To: venkat venkatsubra <firstname.lastname@example.org>
From: Doug Donsbach <email@example.com>
Date: 11/22/2002 16:45:07
venkat venkatsubra wrote:
> On AIX the ACKs are triggered by application's
> reading of the data. An NFS client sets MSG_WAITALL
> recv() flag. Which means the data is not delivered to the
> apps till the full 32K arrives. Without the application's
> read delayed ACK kicks in which is upto 200 millisecs.
> And the sender is waiting for the ACK for the cwnd to
> increase to send more.
> We have done changes to this MSG_WAITALL behavior
> and if you use one of the recent releases (AIX 5.1 for example)
> you will not see this problem.
Thank you, Venkat, for your suggestion.
Doug Donsbach - firstname.lastname@example.org