Date: Thu, 28 Mar 2013 21:41:50 -0700 From: hiren panchasara <hiren.panchasara@gmail.com> To: Jim Harris <jim.harris@gmail.com> Cc: Davide Italiano <davide@freebsd.org>, freebsd-current <freebsd-current@freebsd.org> Subject: Re: hwpmc support for haswell Message-ID: <CALCpEUG9q_g7ZU9dkp=%2Bv7RTGMOpb2KNsry40vqUC=VPwYAOiw@mail.gmail.com> In-Reply-To: <CALCpEUHvec5%2Baw7iZsUoRA%2Bry6mh-4jp=S8tvQhq4Qnzc=hDdg@mail.gmail.com> References: <CALCpEUGKQghSn%2BUgCeUJ-1pyyxBZN8btomj_NnFv6b0xcAQfUw@mail.gmail.com> <CACYV=-FeTS=MgztdmYVQjG0==4dCS2F0HjQaj8skxW6N44mT-Q@mail.gmail.com> <CALCpEUEynvA=h9ELOgGa7PdZVEseMrwVifaUAWAzCcYYYhFdTA@mail.gmail.com> <CALCpEUG3Q7%2B5g385s6N2jpYPR109Qx6G=XjCehD_C-xbBEeqhg@mail.gmail.com> <CAJP=Hc_JFJg_KUxafrf_LD8PohJGap=psDN8Wgt9uyS4uqtGvA@mail.gmail.com> <CALCpEUEMT1wz=Er3cHjUMToDzjgazTg2SWN-SBkwsjX%2B6QtnPg@mail.gmail.com> <CALCpEUHvec5%2Baw7iZsUoRA%2Bry6mh-4jp=S8tvQhq4Qnzc=hDdg@mail.gmail.com>
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On Sat, Mar 23, 2013 at 5:13 PM, hiren panchasara <hiren.panchasara@gmail.com> wrote: > On Sat, Mar 23, 2013 at 8:58 AM, hiren panchasara > <hiren.panchasara@gmail.com> wrote: >> >> On Mar 22, 2013 10:48 PM, "Jim Harris" <jim.harris@gmail.com> wrote: >>> >>> >>> >>> On Friday, March 22, 2013, hiren panchasara wrote: >>>> >>>> On Thu, Jan 31, 2013 at 6:26 PM, hiren panchasara >>>> <hiren.panchasara@gmail.com> wrote: >>>> > On Thu, Jan 31, 2013 at 5:47 PM, Davide Italiano <davide@freebsd.org> >>>> > wrote: >>>> >> On Fri, Feb 1, 2013 at 2:17 AM, hiren panchasara >>>> >> <hiren.panchasara@gmail.com> wrote: >>>> >>> Hi, >>>> >>> >>>> >>> I've prepared a patch to add core and uncore events support for >>>> >>> haswell processor. >>>> >>> I do not have the hardware to test this. It applies cleanly and >>>> >>> compiles fine though. >>>> >>> >>>> >>> http://www.strugglingcoder.info/patches/hwpmc_hw.txt >>>> >>> >>>> >>> This is initial version of patch and manpage is still missing. I will >>>> >>> add it in a few days. >>>> >>> >>>> >>> Any help in testing is appreciated. >>>> >>> >>>> >>> Thanks, >>>> >>> Hiren >>>> >> >>>> >> It seems Intel won't release this before June (at least to my >>>> >> knowledge). >>>> >> I would claim it'll be difficult to real test this before that date >>>> >> unless someone has prerelease hardware. >>>> > >>>> > Indeed. I've posted it here just to let larger audience know and avoid >>>> > possible duplicate work. >>>> > >>>> > We will wait till we get the hardware to test with. >>>> >>>> I recently got a ref haswell box to play with. >>>> >>>> Initial dmesg looks like this: >>>> >>>> CPU: Genuine Intel(R) CPU 0000 @ 2.60GHz (2594.05-MHz K8-class CPU) >>>> Origin = "GenuineIntel" Id = 0x306c2 Family = 0x6 Model = 0x3c >>>> Stepping = 2 >>>> >>>> Features=0xbfebfbff<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,HTT,TM,PBE> >>>> >>>> Features2=0x7ffafbff<SSE3,PCLMULQDQ,DTES64,MON,DS_CPL,VMX,SMX,EST,TM2,SSSE3,<b11>,FMA,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,TSCDLT,AESNI,XSAVE,OSXSAVE,AVX,F16C,RDRAND> >>>> AMD Features=0x2c100800<SYSCALL,NX,Page1GB,RDTSCP,LM> >>>> AMD Features2=0x21<LAHF,ABM> >>>> Standard Extended >>>> Features=0x2fbb<GSFSBASE,TSCADJ,SMEP,ENHMOVSB,INVPCID> >>>> TSC: P-state invariant, performance statistics >>>> real memory = 8589934592 (8192 MB) >>>> avail memory = 8034803712 (7662 MB) >>>> Event timer "LAPIC" quality 600 >>>> ACPI APIC Table: <DELL CBX3 > >>>> FreeBSD/SMP: Multiprocessor System Detected: 8 CPUs >>>> FreeBSD/SMP: 1 package(s) x 4 core(s) x 2 SMT threads >>>> cpu0 (BSP): APIC ID: 0 >>>> cpu1 (AP): APIC ID: 1 >>>> cpu2 (AP): APIC ID: 2 >>>> cpu3 (AP): APIC ID: 3 >>>> cpu4 (AP): APIC ID: 4 >>>> cpu5 (AP): APIC ID: 5 >>>> cpu6 (AP): APIC ID: 6 >>>> cpu7 (AP): APIC ID: 7 >>>> >>>> Diffs at: >>>> http://www.strugglingcoder.info/patches/hwpmc_hw.txt >>>> Tests I've done: >>>> http://www.strugglingcoder.info/patches/hwpmc_hw_pmccontrol.txt >>>> http://www.strugglingcoder.info/patches/hwpmc_hw_pmctest.txt >>>> >>>> I am following 325462-045US Jan 2013 sw dev manual and below are the >>>> counters >>>> which I cannot poke at via pmcstat: >>>> >>>> Core: >>>> "L2_RQSTS.DEMAND_DATA_RD_MISS" >>>> "L2_RQSTS.DEMAND_DATA_RD_HIT" >>>> "L2_RQSTS.ALL_DEMAND_DATA_RD" >>>> "L2_RQSTS.ALL_DEMAND_MISS" >>>> "L2_RQSTS.ALL_DEMAND_REFERENCES" >>>> "L2_RQSTS.MISS" >>>> "CYCLE_ACTIVITY.STALLS_L2_PENDING" >>>> "PAGE_WALKER_LOADS.DTLB_L1" >>>> "PAGE_WALKER_LOADS.ITLB_L1" >>>> "BACLEARS.ANY" >>>> "L2_LINES_OUT.DEMAND_CLEAN" >>>> >>>> Uncore: >>>> "UNC_CBO_XSNP_RESPONSE.INVAL_M" >>>> "UNC_CBO_CACHE_LOOKUP.ES" >>>> >>>> For all of them, I get error like this: >>>> >>>> # pmcstat -p L2_RQSTS.MISS ls >>>> pmcstat: ERROR: Cannot allocate process-mode pmc with specification >>>> "L2_RQSTS.MISS": Invalid argument >>>> >>>> Box does not panic or anything. >>>> >>>> I've tried to double check my changes without success. >>>> Is it possible that the documentation has some inconsistencies? >>>> >>> >>> It looks like IAF_F_FM is missing from most (all?) of the new event w/ >>> umask entries you added that are specific to Haswell. Can you try adding >>> these and see if it clears anything up? A cursory look seemed to show most >>> of these failures are on event/umasks that are missing this flag. >>> >> Ah, good point. Let me try that and let you know. > > Jim, thanks for spotting this. Missing counters are fixed now. Thanks a bunch to Sean for committing the changes: http://svnweb.freebsd.org/base?view=revision&revision=248842 cheers, Hiren > > cheers, > Hiren >> >> Thanks, >> Hiren. >>> Thanks, >>> >>> -Jim
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