On 4/10/20 3:27 PM, John Baldwin wrote: > Author: jhb > Date: Fri Apr 10 22:27:45 2020 > New Revision: 359784 > URL: https://svnweb.freebsd.org/changeset/base/359784 > > Log: > Use both crypto engines on a T6. > > A T6 adapter contains two crypto engines on separate channels. This > commit distributes sessions between the two engines. Previously, only > the first engine was used.
In some simple benchmarks using KTLS with the traffic flowing over one of the ports (cc0) of the same NIC ccr0 was on, throughput increased from ~41 Gbps to 45 Gbps with this change (albeit with CPU usage increase from 70% to 80%). In addition, this commit adds a 'dev.ccr.<unit>.port_mask' sysctl which controls which ports are enabled for new sessions. Setting this to '2' during this test to force all crypto requests to use the crypto engine associated with the channel for cc1 (which was not being used to send any traffic) further increased the throughput to around 48 Gbps while using the same amount of CPU. -- John Baldwin _______________________________________________ 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"
