Date: Thu, 28 Feb 2002 09:35:49 +0900 From: =?euc-kr?B?wOW8usij?= <black@gng.co.kr> To: questions@FreeBSD.org Subject: [Q] rfc1323 option implementation Message-ID: <72ED4C1E297BD5119BDE00B0D049185201738F79@GREEN>
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I uploaded below question on newsgroup, comp.unix.bsd.freebsd.* first, but
I didn't get any clue yet. If you please, let me do something.
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Hi.....
I'm testing the network performance with 'sysctl' and I found there
are some options related my testing. 'net.inet.tcp.rfc1323' is the one
of them. IMHO, as you know, because 'TCP Window Size' affects the
TCP/IP throughput, I tried to increase it. But, I also noticed that it
could not be increased up to 65535 (=64KB) with turning on the
RFC1323 option ( window scale & Time stamp ). This is my dilemma. :(
If I turned on, 'time stamp' option would decrease 'Tcp Window Size'
automatically and if I turned off, I could not set up the windows size
up to 65KB as a matter of course. :(
'time stamp' affects the value of 'cwnd' maybe, so 'cwnd' decreases the next
maximum window size (which is recommended by some RFC maybe).
In case of Win2K, there are 0~3 options for RFC1323 and turn on/off
the two options independently and linux can do it also.
On FreeBSD 4.5, can I disable the Time Stamp option ONLY ??
Do I have to modify the kernel source like 'netinet' ??
Regards...
^ ^
w===================================w
GNG Networks/IDC System
SE Seongho Chang ( black@gngidc.net )
Tel +822-2105-6072
Fax +822-2105-6100
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