Date: Fri, 22 Mar 2013 22:48:23 -0700 From: Jim Harris <jim.harris@gmail.com> To: hiren panchasara <hiren.panchasara@gmail.com> Cc: Davide Italiano <davide@freebsd.org>, freebsd-current <freebsd-current@freebsd.org> Subject: Re: hwpmc support for haswell Message-ID: <CAJP=Hc_JFJg_KUxafrf_LD8PohJGap=psDN8Wgt9uyS4uqtGvA@mail.gmail.com> In-Reply-To: <CALCpEUG3Q7%2B5g385s6N2jpYPR109Qx6G=XjCehD_C-xbBEeqhg@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>
next in thread | previous in thread | raw e-mail | index | archive | help
On Friday, March 22, 2013, hiren panchasara wrote: > On Thu, Jan 31, 2013 at 6:26 PM, hiren panchasara > <hiren.panchasara@gmail.com <javascript:;>> wrote: > > On Thu, Jan 31, 2013 at 5:47 PM, Davide Italiano <davide@freebsd.org<javascript:;>> > wrote: > >> On Fri, Feb 1, 2013 at 2:17 AM, hiren panchasara > >> <hiren.panchasara@gmail.com <javascript:;>> 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. Thanks, -Jim
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?CAJP=Hc_JFJg_KUxafrf_LD8PohJGap=psDN8Wgt9uyS4uqtGvA>