Jonathan T. Looney 1524298754 The current IPMI KCS code is waiting 100us for all transitions (roughly ... between each byte either sent or received). However, most transitions actually complete in 2-3 microseconds. By polling the status register with a delay of 4us with exponential backoff, the performance of most IPMI operations is significantly improved: - A BMC update on a Supermicro x9 or x11 motherboard goes from ~1 hour to ~6-8 minutes. - An ipmitool sensor list time improves by a factor of 4. Testing showed no significant improvements on a modern server by using a lower delay. The changes should also generally reduce the total amount of CPU or I/O bandwidth used for a given IPMI operation. Submitted by: Loic Prylli <lprylli@netflix.com> Reviewed by: jhb MFC after: 2 weeks Sponsored by: Netflix Differential Revision: https://reviews.freebsd.org/D20527		2019-06-12 16:06:31 +00:00
..
amd64	Implement an alternative solution to the amd64 and i386 pmap problem that we	2019-06-09 03:36:10 +00:00
arm	A bit of code hygiene (no functional changes).	2019-06-10 23:25:40 +00:00
arm64	A bit of code hygiene (no functional changes).	2019-06-10 23:25:40 +00:00
bsm
cam	Minor white space changes.	2019-06-11 20:48:19 +00:00
cddl	Fix comparison signedness in arc_is_overflowing().	2019-06-07 20:59:24 +00:00
compat	Replace uses of vm_page_unwire(m, PQ_NONE) with vm_page_unwire_noq(m).	2019-06-07 18:23:29 +00:00
conf	Restore genassym.o to CLEANFILES.	2019-06-11 23:35:34 +00:00
contrib	Whitespace adjustments replacing spaces with tabs.	2019-06-12 11:18:11 +00:00
crypto	aesni(4): Fix trivial type typo	2019-05-27 00:47:51 +00:00
ddb	Extract eventfilter declarations to sys/_eventfilter.h	2019-05-20 00:38:23 +00:00
dev	The current IPMI KCS code is waiting 100us for all transitions (roughly	2019-06-12 16:06:31 +00:00
dts
fs	Manually clear text references on reclaim for nullfs and tmpfs.	2019-06-05 20:16:25 +00:00
gdb
geom	geli: build warning fixes	2019-06-05 22:46:18 +00:00
gnu	dts: Import files from Linux 5.1	2019-05-08 19:27:30 +00:00
i386	Implement an alternative solution to the amd64 and i386 pmap problem that we	2019-06-09 03:36:10 +00:00
isa
kern	Make the warning intervals for deprecated crypto algorithms tunable.	2019-06-11 23:00:55 +00:00
kgssapi	Make the warning intervals for deprecated crypto algorithms tunable.	2019-06-11 23:00:55 +00:00
libkern	random(4): depessimize arc4random	2019-05-12 06:32:46 +00:00
mips	Replace uses of vm_page_unwire(m, PQ_NONE) with vm_page_unwire_noq(m).	2019-06-07 18:23:29 +00:00
modules	Don't attempt to include hwpmc support for armv6, we're missing some of the	2019-06-12 16:05:20 +00:00
net	Restore the comment removed in r348745.	2019-06-06 17:20:35 +00:00
net80211	Enhance the comment ieee80211_add_channel() to avoid a	2019-06-10 14:31:18 +00:00
netgraph
netinet	Sort opt_foo.h #includes and add a missing blank line in ip_output().	2019-06-11 22:07:39 +00:00
netinet6	Sort opt_foo.h #includes and add a missing blank line in ip_output().	2019-06-11 22:07:39 +00:00
netipsec	Make the warning intervals for deprecated crypto algorithms tunable.	2019-06-11 23:00:55 +00:00
netpfil	Initialize V_nat64out methods explicitly.	2019-06-05 09:25:40 +00:00
netsmb
nfs
nfsclient
nfsserver
nlm
ofed	Fix prio vs. nonprio tagged traffic in RDMACM	2019-06-04 06:21:31 +00:00
opencrypto	Move declaration of warninterval out from under COMPAT_FREEBSD32.	2019-06-11 23:28:07 +00:00
powerpc	Fix PPC970 boot after r348783	2019-06-12 15:58:11 +00:00
riscv	RISC-V: expose extension bits in AT_HWCAP	2019-06-11 00:55:54 +00:00
rpc
security	Extract eventfilter declarations to sys/_eventfilter.h	2019-05-20 00:38:23 +00:00
sparc64	FCP-101: Remove wb(4)	2019-05-17 15:24:34 +00:00
sys	Make the warning intervals for deprecated crypto algorithms tunable.	2019-06-11 23:00:55 +00:00
teken
tests
tools	Add SDIO support.	2019-06-08 16:26:56 +00:00
ufs	Add a missing bresle() in seldom-used error return.	2019-05-28 17:31:35 +00:00
vm	To test to see if a free space is big enough compare the required	2019-06-11 22:41:39 +00:00
x86	Currently, MCA entries remain on an every-growing linked list. This means	2019-06-08 18:26:48 +00:00
xdr
xen
Makefile