From owner-freebsd-hackers Thu Jul 9 07:06:23 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id HAA16603 for freebsd-hackers-outgoing; Thu, 9 Jul 1998 07:06:23 -0700 (PDT) (envelope-from owner-freebsd-hackers@FreeBSD.ORG) Received: from bingsun1 (bingsun1.cc.binghamton.edu [128.226.1.2]) by hub.freebsd.org (8.8.8/8.8.8) with SMTP id HAA16598 for ; Thu, 9 Jul 1998 07:06:21 -0700 (PDT) (envelope-from bf20761@binghamton.edu) Received: from localhost (bf20761@localhost) by bingsun1 (SMI-8.6/8.6.9) with SMTP id KAA17897 for ; Thu, 9 Jul 1998 10:06:18 -0400 Date: Thu, 9 Jul 1998 10:06:17 -0400 (EDT) From: zhihuizhang X-Sender: bf20761@bingsun1 Reply-To: zhihuizhang To: hackers Subject: Multi-threaded and TCP/IP window size Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG I got two general questions here: (1) I know for sure that FreeBSD does not supported multi-threaded. I am considering the possibility of constructing a clustered file system using a good NIC. I am just wondering if the fact that FreeBSD does not support multi-threaded programming will affect the performance or implementation of a clustered file system and how. (2) A friend has a special application requirement in which two machines are communicating with each other with TCP/IP. If the receiver send a packet with window size of *zero*, it expects the sender to send one byte a time immediately. He tested other Unix systems (Linux, SunOS, AIX) and found that in these Unix systems, the sender keeps sending a lot of data *for a while* before sending one byte a time (kind of probing). What he wants is an instantanous response form the sender. Later when the receiver sends a packet saying the window size is now, say, 3000 bytes, the sender should be able to come to data rate *immediately*. Can this be (or already have been) done by FreeBSD? Any help is appreciated. ------------------------------------------------- Zhihui Zhang Department of Computer Science State University of New York at Binghamton Web Site: http://cs.binghamton.edu/~zzhang ------------------------------------------------- To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message