freebsd-skq/sys/compat
mmacy ecd6e9d307 UDP: further performance improvements on tx
Cumulative throughput while running 64
  netperf -H $DUT -t UDP_STREAM -- -m 1
on a 2x8x2 SKL went from 1.1Mpps to 2.5Mpps

Single stream throughput increases from 910kpps to 1.18Mpps

Baseline:
https://people.freebsd.org/~mmacy/2018.05.11/udpsender2.svg

- Protect read access to global ifnet list with epoch
https://people.freebsd.org/~mmacy/2018.05.11/udpsender3.svg

- Protect short lived ifaddr references with epoch
https://people.freebsd.org/~mmacy/2018.05.11/udpsender4.svg

- Convert if_afdata read lock path to epoch
https://people.freebsd.org/~mmacy/2018.05.11/udpsender5.svg

A fix for the inpcbhash contention is pending sufficient time
on a canary at LLNW.

Reviewed by:	gallatin
Sponsored by:	Limelight Networks
Differential Revision:	https://reviews.freebsd.org/D15409
2018-05-23 21:02:14 +00:00
..
cloudabi Eliminate the overhead of gratuitous repeated reinitialization of cap_rights 2018-05-09 18:47:24 +00:00
cloudabi32 Don't use an .OBJDIR for 'make sysent'. 2018-01-29 19:14:15 +00:00
cloudabi64 Don't use an .OBJDIR for 'make sysent'. 2018-01-29 19:14:15 +00:00
freebsd32 Allow freebsd32 __sysctl(2) to return ENOMEM. 2018-05-15 16:24:58 +00:00
ia32 Move most of the contents of opt_compat.h to opt_global.h. 2018-04-06 17:35:35 +00:00
linprocfs UDP: further performance improvements on tx 2018-05-23 21:02:14 +00:00
linsysfs Make it easier for filesystems to count themselves as jail-enabled, 2018-05-04 20:54:27 +00:00
linux UDP: further performance improvements on tx 2018-05-23 21:02:14 +00:00
linuxkpi/common UDP: further performance improvements on tx 2018-05-23 21:02:14 +00:00
ndis Revert r327828, r327949, r327953, r328016-r328026, r328041: 2018-01-21 15:42:36 +00:00
netbsd sys/compat: further adoption of SPDX licensing ID tags. 2017-11-27 15:13:23 +00:00
x86bios x86bios: spelling fix in a comment. 2016-04-30 00:34:04 +00:00