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- Avoid main lock contention by trylock for if_start, if that fails, schedule TX taskqueue for if_start - Don't do direct sending if the packet to be sent is large, e.g. TSO packet. This change gives me stable 9.1Gbps TCP sending performance w/ TSO over a 10Gbe directly connected network (the performance fluctuated between 4Gbps and 9Gbps before this commit). It also improves non- TSO TCP sending performance a lot. Reviewed by: adrian, royger Approved by: adrian (mentor) Sponsored by: Microsoft OSTC Differential Revision: https://reviews.freebsd.org/D5074 |
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