Hi -net, On 12/7/15 4:36 PM, Julien Charbon wrote: > On 30/05/14 06:12, k simon wrote: >> Does any plan commit and MFC to the 10-stable ? > > I got a bit of interest of having the performance improvements for > short-lived TCP connections in 10-stable. Just to share the current > status to a wider audience: > > - I maintain a stack of our TCP performance related patches for > 10.2-RELENG here: > > https://github.com/verisign/freebsd/commits/10.2/tcp-scale
Got more request to MFC TCP stack short-lived connection changes (see below) in 10: #1 Decrease lock contention within the TCP accept case by removing the INP_INFO lock from tcp_usr_accept https://svnweb.freebsd.org/base?view=revision&revision=271119 #2 In tcp_input(), don't acquire the pcbinfo global write lock for SYN packets targeting a listening socket. https://svnweb.freebsd.org/base?view=revision&revision=271119 #3 A connection in TIME_WAIT state before calling close() actually did not received any RST packet. https://svnweb.freebsd.org/base?view=revision&revision=273014 #4 Decompose TCP INP_INFO lock to increase short-lived TCP connections scalability https://svnweb.freebsd.org/base?view=revision&revision=286227 Fix a kernel assertion issue introduced with r286227 https://svnweb.freebsd.org/base?view=revision&revision=286443 #5 Make clear that TIME_WAIT timeout expiration is managed solely by tcp_tw_2msl_scan() https://svnweb.freebsd.org/base?view=revision&revision=286873 If nobody complains, I plan to MFC them in stable/10. After actually quite a bunch of tests as I see a lot of changes that might impact these MFCs (like TFO support, etc.). -- Julien
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