Date: Mon, 6 Mar 2017 15:58:12 +0300 From: Dmitry Marakasov <amdmi3@amdmi3.ru> To: freebsd-virtualization@freebsd.org Subject: Re: Timer problems on FreeBSD 11R on KVM Message-ID: <20170306125812.GA47885@hades.panopticon> In-Reply-To: <20170301174640.GA44226@hades.panopticon> References: <20170301174640.GA44226@hades.panopticon>
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* Dmitry Marakasov (amdmi3@amdmi3.ru) wrote:
Virtualization problems keep raining on me. Or there seem to be exist
major FreeBSD problem when running under hypervisor.
Another VM under VMWare vSphere is now showing similar symptoms -
stable 33.3% intr load:
3 users Load 2.07 2.77 2.70 Mar 6 15:53
Mem usage: 95%Phy 58%Kmem
Mem: KB REAL VIRTUAL VN PAGER SWAP PAGER
Tot Share Tot Share Free in out in out
Act 1697056 15280 7672636 22792 739732 count
All 1700936 19060 7692936 42992 pages
Proc: Interrupts
r p d s w Csw Trp Sys Int Sof Flt ioflt 389 total
2 166 1203 810 15k 20 92 cow atkbd0 1
zfod 18 attimer0 0
2.0%Sys 33.3%Intr 0.0%User 6.9%Nice 57.8%Idle ozfod fdc0 6
| | | | | | | | | | %ozfod ata1 15
=+++++++++++++++++--- daefr mpt0 17
dtbuf prcfr 2 em0 18
Namei Name-cache Dir-cache 350812 desvn totfr 103 cpu0:timer
Calls hits % hits % 344853 numvn react 77 cpu2:timer
326 326 100 316930 frevn pdwak 189 cpu1:timer
219 pdpgs
Disks da0 da1 da2 da3 cd0 pass0 pass1 intrn
KB/t 0.00 0.00 0.00 0.00 0.00 0.00 0.00 13835380 wire
tps 0 0 0 0 0 0 0 544104 act
MB/s 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1219264 inact
%busy 0 0 0 0 0 0 0 cache
739732 free
buf
Switching to i8254 doesn't help either, load does not change, just
intrrupts move to attimer0.
This is box is not production so I can do whatever I like with it.
Here's dtrace output from /usr/share/dtrace/toolkit/hotkernel, but I
doubt it's helpful:
kernel`in_pcbref 790 4.2%
kernel`__rw_try_rlock 1054 5.6%
kernel`tcp_tw_2msl_scan 1419 7.5%
kernel`__rw_rlock 1433 7.6%
kernel`in_pcbrele_wlocked 1846 9.7%
kernel`_rw_runlock_cookie 2362 12.5%
kernel`acpi_cpu_c1 8615 45.5%
--
Dmitry Marakasov . 55B5 0596 FF1E 8D84 5F56 9510 D35A 80DD F9D2 F77D
amdmi3@amdmi3.ru ..: jabber: amdmi3@jabber.ru http://amdmi3.ru
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