Sepherosa, On Tue, Jan 26, 2016 at 09:42:13AM +0000, Sepherosa Ziehau wrote: S> Author: sephe S> Date: Tue Jan 26 09:42:13 2016 S> New Revision: 294788 S> URL: https://svnweb.freebsd.org/changeset/base/294788 S> S> Log: S> hyperv/hn: Improve sending performance S> S> - Avoid main lock contention by trylock for if_start, if that fails, S> schedule TX taskqueue for if_start S> - Don't do direct sending if the packet to be sent is large, e.g. S> TSO packet. S> S> This change gives me stable 9.1Gbps TCP sending performance w/ TSO S> over a 10Gbe directly connected network (the performance fluctuated S> between 4Gbps and 9Gbps before this commit). It also improves non- S> TSO TCP sending performance a lot. S> S> Reviewed by: adrian, royger S> Approved by: adrian (mentor) S> Sponsored by: Microsoft OSTC S> Differential Revision: https://reviews.freebsd.org/D5074
Why do you actually use if_start, not if_transmit? -- Totus tuus, Glebius. _______________________________________________ svn-src-head@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
