Hi,
I recently noticed some generic slowness myself. I experienced this during
replacing disks in a raidz by bigger ones. Long story short, check top -s
if you have vnlru running for a long period at high CPU... If yes increase
kern.maxvnodes (I increased to 10 times). Note, we should improve the admin
page in the FAQ, the vnlru entry could need a little bit more hints and
explanations.
If you encounter the same issue we have probably introduced a change
somewhere with an unintended side effect.
Bye,
Alexander.
--
Send from a mobile device, please forgive brevity and misspellings.
Am 7. Februar 2019 4:43:43 nachm. schrieb "Rodney W. Grimes"
<freebsd-...@pdx.rh.cn85.dnsmgr.net>:
I run and track stable/11, stable/12, and head (from separate slices --
no VMs involved) on my laptop; among other things, this permits some
degree of comparison among them.
The laptop is configured to run xdm; while running stable/11 or
stable/12, there's a period of about 5 seconds after xdm's login banner
shows up before either the mouse or keyboard responds.
Up to a few days ago, head was the same, but as of about last weekend (I
think), that period is about 40 seconds while running head.
I realize that's a little ... lacking in specificity, and I apologize
for that. And while I noticed it a few days ago, I hadn't actually
timed it until this morning.
My addition is going to lack even worse, I have been seeing very
long periods of lag, on this 40 second order, when a bhyve instance
is started. The interactive response for this time is 0, not
even ^t produces any output. The prompt comes back almost immediatly
after typing the bhyve command, but that prompt is dead for a
very long time.
I am running 12.0-RELEASE, and see this issue on multiple machines.
Information, including verbose dmesg.boot copies and a log of uname
outputs, may be found from the page at
<http://www.catwhisker.org/~david/FreeBSD/history/>.
Here's a list of the uname outputs for head over the last several days:
FreeBSD 13.0-CURRENT #245 r343551M/343551: Tue Jan 29 03:54:46 PST 2019
r...@g1-49.catwhisker.org:/common/S4/obj/usr/src/amd64.amd64/sys/CANARY
amd64 1300010
FreeBSD 13.0-CURRENT #246 r343572M/343572: Wed Jan 30 05:14:44 PST 2019
r...@g1-49.catwhisker.org:/common/S4/obj/usr/src/amd64.amd64/sys/CANARY
amd64 1300010
FreeBSD 13.0-CURRENT #247 r343604M/343604: Thu Jan 31 03:53:37 PST 2019
r...@g1-49.catwhisker.org:/common/S4/obj/usr/src/amd64.amd64/sys/CANARY
amd64 1300010
FreeBSD 13.0-CURRENT #248 r343646M/343658: Fri Feb 1 04:05:45 PST 2019
r...@g1-49.catwhisker.org:/common/S4/obj/usr/src/amd64.amd64/sys/CANARY
amd64 1300010
FreeBSD 13.0-CURRENT #249 r343678M/343678: Sat Feb 2 03:55:23 PST 2019
r...@g1-49.catwhisker.org:/common/S4/obj/usr/src/amd64.amd64/sys/CANARY
amd64 1300010
FreeBSD 13.0-CURRENT #250 r343707M/343711: Sun Feb 3 04:06:08 PST 2019
r...@g1-49.catwhisker.org:/common/S4/obj/usr/src/amd64.amd64/sys/CANARY
amd64 1300010
FreeBSD 13.0-CURRENT #251 r343732M/343741: Mon Feb 4 04:24:07 PST 2019
r...@g1-49.catwhisker.org:/common/S4/obj/usr/src/amd64.amd64/sys/CANARY
amd64 1300010
FreeBSD 13.0-CURRENT #252 r343770M/343771: Tue Feb 5 04:27:38 PST 2019
r...@g1-49.catwhisker.org:/common/S4/obj/usr/src/amd64.amd64/sys/CANARY
amd64 1300010
FreeBSD 13.0-CURRENT #253 r343828M/343834: Wed Feb 6 03:59:36 PST 2019
r...@g1-49.catwhisker.org:/common/S4/obj/usr/src/amd64.amd64/sys/CANARY
amd64 1300010
FreeBSD 13.0-CURRENT #254 r343867M/343867: Thu Feb 7 04:52:38 PST 2019
r...@g1-49.catwhisker.org:/common/S4/obj/usr/src/amd64.amd64/sys/CANARY
amd64 1300010
Peace,
david
--
David H. Wolfskill da...@catwhisker.org
"It was like reading a Donald Trump tweet. It didn't make any sense."
See http://www.catwhisker.org/~david/publickey.gpg for my public key.
--
Rod Grimes rgri...@freebsd.org
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