Date: Thu, 9 Jul 1998 10:06:17 -0400 (EDT) From: zhihuizhang <bf20761@binghamton.edu> To: hackers <freebsd-hackers@FreeBSD.ORG> Subject: Multi-threaded and TCP/IP window size Message-ID: <Pine.SOL.L3.93.980709094537.16513A-100000@bingsun1>
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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
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