From owner-freebsd-current@FreeBSD.ORG Sat Mar 23 05:48:26 2013 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by hub.freebsd.org (Postfix) with ESMTP id 546E5478; Sat, 23 Mar 2013 05:48:26 +0000 (UTC) (envelope-from jim.harris@gmail.com) Received: from mail-ee0-f41.google.com (mail-ee0-f41.google.com [74.125.83.41]) by mx1.freebsd.org (Postfix) with ESMTP id 8ED3621D; Sat, 23 Mar 2013 05:48:25 +0000 (UTC) Received: by mail-ee0-f41.google.com with SMTP id c1so160958eek.28 for ; Fri, 22 Mar 2013 22:48:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:x-received:in-reply-to:references:date:message-id :subject:from:to:cc:content-type; bh=hqybHd8Hf60LVffF6OUkhSACzjLQqtpPzGIGPDjYap4=; b=CzcyMkNK+OPscTjGcnxRBcOBLjfshdpW9exNTm43PU3QRDnK2uvDsHjxrxfxo6f1ys PLHL21RXm2BgvXJYfh2b+yrRzq6dS8v3ZlANOxgNsZKE/Y4WAgT1xfi2Pgwhc7tFAEEO aXdzjXHBrh1pGMzokhzK3TKeItmNkkmT+4+Pse9PMdzQMkjbtVlpWS4vJXVtgCSGzqez bzOYysf/g5ojmvTIfOS0mQbQMAGQlrktR2xWPYYOVsrwo6N/pKGpiIN8PhsReOjNk5J7 H275SkqXPiaH2forfVsGW9DUDO/Nxb5CccZxUguhvvrXJv3378eigE74pq0yhphIAEm+ JL+g== MIME-Version: 1.0 X-Received: by 10.14.3.133 with SMTP id 5mr11526442eeh.43.1364017704054; Fri, 22 Mar 2013 22:48:24 -0700 (PDT) Received: by 10.14.96.129 with HTTP; Fri, 22 Mar 2013 22:48:23 -0700 (PDT) In-Reply-To: References: Date: Fri, 22 Mar 2013 22:48:23 -0700 Message-ID: Subject: Re: hwpmc support for haswell From: Jim Harris To: hiren panchasara Content-Type: text/plain; charset=ISO-8859-1 X-Content-Filtered-By: Mailman/MimeDel 2.1.14 Cc: Davide Italiano , freebsd-current X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 23 Mar 2013 05:48:26 -0000 On Friday, March 22, 2013, hiren panchasara wrote: > On Thu, Jan 31, 2013 at 6:26 PM, hiren panchasara > > wrote: > > On Thu, Jan 31, 2013 at 5:47 PM, Davide Italiano > > wrote: > >> On Fri, Feb 1, 2013 at 2:17 AM, hiren panchasara > >> > 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 > > Features2=0x7ffafbff,FMA,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,TSCDLT,AESNI,XSAVE,OSXSAVE,AVX,F16C,RDRAND> > AMD Features=0x2c100800 > AMD Features2=0x21 > Standard Extended Features=0x2fbb > TSC: P-state invariant, performance statistics > real memory = 8589934592 (8192 MB) > avail memory = 8034803712 (7662 MB) > Event timer "LAPIC" quality 600 > ACPI APIC Table: > 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