Warner Losh
79d80af216
Implement moving SD.
...
From the paper "Incremental calculation of weighted mean and variance"
by Tony Finch Februrary 2009, retrieved from
http://people.ds.cam.ac.uk/fanf2/hermes/doc/antiforgery/stats.pdf
converted to use shifting.
2017-03-22 19:18:47 +00:00
Warner Losh
e831795b8a
Remove nested #ifdef that can't possibly be false.
2017-01-27 08:30:43 +00:00
Warner Losh
b20c0a07fb
Preening pass to fix up trailing white space and other minor style(9)
...
nits (though I'm sure others remain).
MFC After: 3 days
2017-01-25 02:05:08 +00:00
Warner Losh
cf3ec15167
Compute two new metrics. Disk load, the average number of transactions
...
we have queued up normaliazed to the queue size. Also compute buckets
of latency to help compute, in userland, estimates of Median, P90, P95
and P99 values.
Sponsored by: Netflix, Inc
2016-09-30 17:49:04 +00:00
Warner Losh
035ec48e55
Tidy up loose ends from Netflix I/O sched rename to dynamic I/O sched.
...
Rename kern.cam.do_netflix_iosched sysctl to
kern.cam.do_dynamic_iosched.
Approved by: re (kib@)
2016-07-07 20:31:35 +00:00
Warner Losh
df2362478e
Rename CAM_NETFLIX_IOSCHED to CAM_IOSCHED_DYNAMIC to better reflect
...
its nature.
Approved by: re
Reviewed By: jhb
Differential Revision: https://reviews.freebsd.org/D6811
2016-06-23 23:20:58 +00:00
Xin LI
b97b6d27f2
Fix tinderbox LINT build.
2016-04-18 08:24:13 +00:00
Warner Losh
2b5c19f196
Do the intmax_t dance for debug so CAM_NETFLIX_IOSCHED builds on
...
i386.
Sponsored by: Netflix, Inc
2016-04-17 21:29:44 +00:00
Warner Losh
5ede5b8cb5
Put function only used by CAM_NETFLIX_IOSCHED under that ifdef.
2016-04-15 05:10:32 +00:00
Warner Losh
ba6c22ce93
Add in missing files from r298002.
2016-04-14 22:13:44 +00:00
