On Tue, 27 Nov 2018 10:37:38, Corinna Vinschen wrote:
>
> On Nov 26 19:07, Houder wrote:
[snip]
> > 64-@@ uname -a
> > CYGWIN_NT-6.1 Seven 2.11.3(0.329/5/3) x86_64 Cygwin
> > 64-@@ ls -l /bin/cygwin1*
> > -rwxr-xr-x 1 Henri None 3339661 Nov 8 14:36 /bin/cygwin1-2.11.2.X
> > -rwxr-xr-x 1 Henri None 3337995 Nov 26 18:43 /bin/cygwin1-64-20181126.X
> > -rwxr-xr-x 1 Henri None 3337995 Nov 26 18:43 /bin/cygwin1.dll
> > 64-@@ cd threads
[snip]
> > 64-@@ for loop in {1..10000}; do ./cyg_hires_clock_race.exe; done
> > 64-@@# That is enough!
>
> Thanks a lot for testing! (Particulary since I couldn't even
> reproduce this on W7)
Perhaps my machine is a bit "peculiar" ... :-)
(the real litmus test is, of course, James E. King III's application, not the
STC)
Henri
/home/corinna/src/cygwin/cygwin-2.11.2/cygwin-2.11.2-1.i686/src/newlib-cygwin/winsup/cygwin/cygheap.cc
64-@@ uname -a
CYGWIN_NT-6.1 Seven 2.11.2(0.329/5/3) 2018-08-31 13:05 x86_64 Cygwin
64-@@ cd threads
64-@@ for loop in {1..1000}; do ./cyg_hires_clock_race.exe; done
ERROR: one of the timespec structures was zero:
main thread: tv_sec = 3455 tv_nsec = 350898985
2nd thread: tv_sec = 0 tv_nsec = 0
64-@@ for loop in {1..1000}; do ./cyg_hires_clock_race.exe; done
ERROR: one of the timespec structures was zero:
main thread: tv_sec = 3461 tv_nsec = 157276019
2nd thread: tv_sec = 0 tv_nsec = 0
ERROR: one of the timespec structures was zero:
main thread: tv_sec = 3467 tv_nsec = 493831379
2nd thread: tv_sec = 0 tv_nsec = 0
ERROR: one of the timespec structures was zero:
main thread: tv_sec = 3467 tv_nsec = 855769393
2nd thread: tv_sec = 0 tv_nsec = 0
Perhaps the following is significant?
64-@@ cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 60
model name : Intel(R) Core(TM) i7-4770 CPU @ 3.40GHz
stepping : 3
cpu MHz : 3398.000
cache size : 8192 KB
...
processor : 7
vendor_id : GenuineIntel
cpu family : 6
model : 60
model name : Intel(R) Core(TM) i7-4770 CPU @ 3.40GHz
stepping : 3
cpu MHz : 3398.000
cache size : 8192 KB
physical id : 0
siblings : 8
core id : 3
cpu cores : 4
apicid : 7
initial apicid : 7
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca \
cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe pni dtes64 \
monitor ds_cpl vmx smx est tm2 ssse3 fma cx16 xtpr pdcm sse4_1 sse4_2 \
x2apic movbe popcnt aes xsave osxsave avx f16c rdrand lahf_lm ida arat \
epb xsaveopt pln pts dtherm fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid
clflush size : 64
cache_alignment : 64
address sizes : 39 bits physical, 48 bits virtual
power management:
=====
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