RFR (s) 8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files

[Mikael Gerdin]

On 2015-06-12 12:07, Coleen Phillimore wrote:
>
>
> On 6/12/15 4:17 AM, Mikael Gerdin wrote:
>> Hi Coleen,
>>
>> On 2015-06-11 18:06, Coleen Phillimore wrote:
>>> Summary: summarize information from linux-x86; it's too long and
>>> redundant
>>>
>>> The cpuinfo on one linux/x86 machine now prints:
>>>
>>> /proc/cpuinfo:
>>> model name      : Intel(R) Core(TM) i5-3550 CPU @ 3.30GHz
>>>
>>> on 32 bit machine:
>>> *
>>> */proc/cpuinfo:
>>> model name      : Intel(R) Xeon(R) CPU           L5520  @ 2.27GHz
>>> **
>>> Other linux platforms are unaffected because they don't print as much
>>> and information seems not redundant.
>>
>> Would you be ok with printing one of the "flags" lines as well?
>>
>> 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
>> syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts
>> rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq
>> dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm pcid dca
>> sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx lahf_lm
>> ida arat epb pln pts dtherm tpr_shadow vnmi flexpriority ept vpid
>> xsaveopt
>>
>> It would give some quick insight into what CPU features were available
>> during runtime.
>
> We already print
>
> CPU:total 4 (4 cores per cpu, 1 threads per core) family 6 model 58
> stepping 9, cmov, cx8, fxsr, mmx, sse, sse2, sse3, ssse3, sse4.1,
> sse4.2, popcnt, avx, aes, clmul, erms, tsc, tscinvbit, tscinv
>
> For the flags we use.   This isn't enough?

Oh, I must've overlooked that. That's fine then.
Thanks
/Mikael

>
> thanks,
> Coleen
>>
>> /Mikael
>>
>>>
>>> Rather than duplicating the pd_print_cpu_info function for all the
>>> os_cpu/linux* combinations, I added an ifdef.   In os_aix.cpp there's a
>>> pd_print_cpu_info, which is called from os::print_cpu_info that
>>> duplicates the information but I didn't touch it.
>>>
>>> open webrev at http://cr.openjdk.java.net/~coleenp/8085865.01/
>>> bug link https://bugs.openjdk.java.net/browse/JDK-8085865
>>>
>>> Thanks,
>>> Coleen
>>>
>>>
>