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Add note about CAM I/O scheduler.

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Warner Losh 2016-04-14 22:38:13 +00:00
parent 206c31c812
commit 13694b35e1
1 changed files with 7 additions and 0 deletions
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@ -31,6 +31,13 @@ NOTE TO PEOPLE WHO THINK THAT FreeBSD 11.x IS SLOW:
disable the most expensive debugging functionality run
"ln -s 'abort:false,junk:false' /etc/malloc.conf".)
20160414:
The CAM I/O scheduler has been committed to the kernel. There should
be no user visible impact. This does enable NCQ Trim on ada
SSDs. While the list of known rogues that claim support for
this but actually corrupt data is believed to be complete, be
on the lookout for data corruption.
20160330:
The FAST_DEPEND build option has been removed and its functionality is
now the one true way. The old mkdep(1) style of 'make depend' has