[Bug 225584] Various compile process hang on Ryzen, but not on Intel

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=225584

--- Comment #90 from mike at sentex.net ---
(In reply to Kurt Jaeger from comment #88)


The deadlock I was running into with net/samba47 builds would happen
with and without SMT enabled.  With the patch at
https://reviews.freebsd.org/D14347
I can build net/samba47 reliably with all cores running full out on a
zero loaded machine, or a machine that is maxed out with other processes
and pressure on RAM.

I think there were other unrelated things going on with the platform
that seem to be now all resolved for me

https://lists.freebsd.org/pipermail/freebsd-stable/2018-February/088383.html

CPU: AMD Ryzen 5 1600 Six-Core Processor             (3194.07-MHz K8-class CPU)
  Origin="AuthenticAMD"  Id=0x800f11  Family=0x17  Model=0x1  Stepping=1
 
Features=0x178bfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,MMX,FXSR,SSE,SSE2,HTT>
 
Features2=0x7ed8320b<SSE3,PCLMULQDQ,MON,SSSE3,FMA,CX16,SSE4.1,SSE4.2,MOVBE,POPCNT,AESNI,XSAVE,OSXSAVE,AVX,F16C,RDRAND>
  AMD Features=0x2e500800<SYSCALL,NX,MMX+,FFXSR,Page1GB,RDTSCP,LM>
  AMD
Features2=0x35c233ff<LAHF,CMP,SVM,ExtAPIC,CR8,ABM,SSE4A,MAS,Prefetch,OSVW,SKINIT,WDT,TCE,Topology,PCXC,PNXC,DBE,PL2I,MWAITX>
  Structured Extended
Features=0x209c01a9<FSGSBASE,BMI1,AVX2,SMEP,BMI2,RDSEED,ADX,SMAP,CLFLUSHOPT,SHA>
  XSAVE Features=0xf<XSAVEOPT,XSAVEC,XINUSE,XSAVES>
  AMD Extended Feature Extensions ID EBX=0x7<CLZERO,IRPerf,XSaveErPtr>
  SVM: NP,NRIP,VClean,AFlush,DAssist,NAsids=32768
  TSC: P-state invariant, performance statistics
real memory  = 34359738368 (32768 MB)
avail memory = 33246248960 (31706 MB)
Event timer "LAPIC" quality 100
ACPI APIC Table: <ALASKA A M I >
FreeBSD/SMP: Multiprocessor System Detected: 12 CPUs
FreeBSD/SMP: 1 package(s) x 6 core(s) x 2 hardware threads
random: unblocking device.
Firmware Warning (ACPI): Optional FADT field Pm2ControlBlock has valid Length
but zero Address: 0x0000000000000000/0x1 (20171214/tbfadt-796)
ioapic0 <Version 2.1> irqs 0-23 on motherboard
ioapic1 <Version 2.1> irqs 24-55 on motherboard
SMP: AP CPU #7 Launched!
SMP: AP CPU #11 Launched!
SMP: AP CPU #10 Launched!
SMP: AP CPU #1 Launched!
SMP: AP CPU #5 Launched!
SMP: AP CPU #2 Launched!
SMP: AP CPU #8 Launched!
SMP: AP CPU #3 Launched!
SMP: AP CPU #9 Launched!
SMP: AP CPU #6 Launched!
SMP: AP CPU #4 Launched!

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