[Bug 241958] Enable option TCPHPTS in the kernel causes a large % of interruptions if there is no HPET eventtimer in the system
bugzilla-noreply at freebsd.org
bugzilla-noreply at freebsd.org
Wed Nov 13 23:27:00 UTC 2019
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=241958
Bug ID: 241958
Summary: Enable option TCPHPTS in the kernel causes a large %
of interruptions if there is no HPET eventtimer in the
system
Product: Base System
Version: 12.1-RELEASE
Hardware: amd64
OS: Any
Status: New
Severity: Affects Only Me
Priority: ---
Component: kern
Assignee: bugs at FreeBSD.org
Reporter: admin at support.od.ua
Enable option TCPHPTS in the kernel causes a large % of interruptions if there
is no HPET eventtimer in the system.
FreeBSD system running on VPS with 1 GB of RAM in the OVH data center
# uname -a
FreeBSD vps7XXXXX.ovh.net 12.1-STABLE FreeBSD 12.1-STABLE r354671
SUPPORT-12-1-3 amd64
#top -CHPS
last pid: 54135; load averages: 1.13, 0.83, 0.83 up 0+00:40:41 01:17:27
370 threads: 2 running, 342 sleeping, 26 waiting
CPU: 0.0% user, 0.0% nice, 0.4% system, 41.6% interrupt, 58.0% idle
Mem: 87M Active, 23M Inact, 118M Wired, 1677M Free
ARC: 40M Total, 5499K MFU, 32M MRU, 1220K Anon, 395K Header, 1405K Other
21M Compressed, 61M Uncompressed, 2.97:1 Ratio
Swap: 1024M Total, 1024M Free
PID USERNAME PRI NICE SIZE RES STATE TIME CPU COMMAND
11 root 155 ki31 0 16K RUN 27:09 57.51% idle
12 root -72 - 0 416K WAIT 13:12 42.04% intr{swi1: hpts}
# sysctl -a kern.eventtimer
kern.eventtimer.periodic: 0
kern.eventtimer.timer: LAPIC
kern.eventtimer.idletick: 0
kern.eventtimer.singlemul: 4
kern.eventtimer.choice: LAPIC(600) i8254(100) RTC(0)
kern.eventtimer.et.i8254.quality: 100
kern.eventtimer.et.i8254.frequency: 1193182
kern.eventtimer.et.i8254.flags: 1
kern.eventtimer.et.RTC.quality: 0
kern.eventtimer.et.RTC.frequency: 32768
kern.eventtimer.et.RTC.flags: 17
kern.eventtimer.et.LAPIC.quality: 600
kern.eventtimer.et.LAPIC.frequency: 500011170
kern.eventtimer.et.LAPIC.flags: 7
# sysctl -a net.inet.tcp.hpts
net.inet.tcp.hpts.0.logsize: 3072
net.inet.tcp.hpts.0.curtick: 284411163
net.inet.tcp.hpts.0.curslot: 46360
net.inet.tcp.hpts.0.active: 0
net.inet.tcp.hpts.0.out_qcnt: 0
net.inet.tcp.hpts.0.in_qcnt: 0
net.inet.tcp.hpts.log:
net.inet.tcp.hpts.skip_swi: 0
net.inet.tcp.hpts.minsleep: 250
net.inet.tcp.hpts.maxsleep: 102398
net.inet.tcp.hpts.out_tspercision: 0
net.inet.tcp.hpts.out_tsperpcb: 0
net.inet.tcp.hpts.in_tspercision: 0
net.inet.tcp.hpts.in_tsperpcb: 0
net.inet.tcp.hpts.no_tcbsfound: 0
net.inet.tcp.hpts.loops: 42998907
net.inet.tcp.hpts.logging: 0
net.inet.tcp.hpts.precision: 120
#dmesg
FreeBSD 12.1-STABLE r354671 SUPPORT-12-1-0 amd64
FreeBSD clang version 8.0.1 (tags/RELEASE_801/final 366581) (based on LLVM
8.0.1)
sysctl: OID number(131) is already in use for 'me'
VT(vga): resolution 640x480
CPU: Intel Core Processor (Haswell, no TSX) (2400.01-MHz K8-class CPU)
Origin="GenuineIntel" Id=0x306c1 Family=0x6 Model=0x3c Stepping=1
Features=0x783fbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,MMX,FXSR,SSE,SSE2>
Features2=0xfffa3223<SSE3,PCLMULQDQ,VMX,SSSE3,FMA,CX16,PCID,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,TSCDLT,AESNI,XSAVE,OSXSAVE,AVX,F16C,RDRAND,HV>
AMD Features=0x28100800<SYSCALL,NX,RDTSCP,LM>
AMD Features2=0x21<LAHF,ABM>
Structured Extended Features=0x7a9<FSGSBASE,BMI1,AVX2,SMEP,BMI2,ERMS,INVPCID>
XSAVE Features=0x1<XSAVEOPT>
VT-x: (disabled in BIOS) PAT,HLT,MTF,PAUSE,EPT,UG,VPID,VID,PostIntr
Hypervisor: Origin = "KVMKVMKVM"
...
--
You are receiving this mail because:
You are the assignee for the bug.
More information about the freebsd-bugs
mailing list