Date: Thu, 17 Apr 2003 22:12:02 -0700 From: "Jin Guojun [NCS]" <j_guojun@lbl.gov> To: freebsd-performance@freebsd.org Cc: freebsd-hackers@freebsd.org Subject: patch for test (Was: tcp_output starving -- is due to mbuf get delay?) Message-ID: <3E9F8922.1166ABA8@lbl.gov>
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I have modified the sockbuf and mbuf operation to double the throughput over
high bandwidth delay product path.
The patch is available at:
http://www-didc.lbl.gov/~jin/network/lion/content.html#FreeBSD_Patches
The current modification is for tcp transmission only.
I have adapted some code of uipc_socket2.c from Sam Leffler
http://www.freebsd.org/~sam/thorpe-stable.patch
for tcp receiver, but it has not been tested yet, so the tcp_input.p is empty.
I ignored all record chain (m_nextpkt) related code. The details is explained at
http://www-didc.lbl.gov/~jin/network/lion/content.html#BSDMbuf
Once the tcp_input code is tested, I will submit the patch to bugs@freebsd.org.
I may submit the patch regardless if tcp_input code works or not, because the
tcp
sender (server) is more important in high-speed network than the receiver
(client).
It is appreciated if any one can verify the patch and provide feedback.
--
------------ Jin Guojun ----------- v --- j_guojun@lbl.gov ---
Distributed Systems Department http://www.itg.lbl.gov/~jin
M/S 50B-2239 Ph#:(510) 486-7531 Fax: 486-6363
Lawrence Berkeley National Laboratory, Berkeley, CA 94720
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