From owner-freebsd-current@FreeBSD.ORG Sun Mar 24 00:13:22 2013 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.FreeBSD.org [8.8.178.115]) by hub.freebsd.org (Postfix) with ESMTP id 79F9229E; Sun, 24 Mar 2013 00:13:22 +0000 (UTC) (envelope-from hiren.panchasara@gmail.com) Received: from mail-ea0-x234.google.com (mail-ea0-x234.google.com [IPv6:2a00:1450:4013:c01::234]) by mx1.freebsd.org (Postfix) with ESMTP id BBD1623F; Sun, 24 Mar 2013 00:13:21 +0000 (UTC) Received: by mail-ea0-f180.google.com with SMTP id m14so697663eaj.11 for ; Sat, 23 Mar 2013 17:13:20 -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=IMPVbdDhOirLwGPj3Iu/13PaX2NCtWu/gLuHIf00DRQ=; b=P5Iv9Fss/RvGFYyvNc6RI5zD+mNu8EHvAnTV6lYBXKO5V3nRL2gfKv7kpVNSs2t15M VXTeE8Yu6eIfIlNAWydvQaXK/j9JBprI0FVPIxGXwnJrisXTh3s+qeGYj81gRBofexTS afQYQhqX1Busb4aSVmAUETL2cyN7rVb9pQKOdvbLOSiB09F8sg0Oy6NFlYajSyF6ZZcN gVYUmT4+qoiVxyJhCK3rkF+069EITS/YTSzwLB7QvIbdjjIiNR44wRtjXeQbQhthqcsS KR6xfSAbf9h6r9BcyROpBpOF2+OzfRkHhQfVEqh5YiOY64klhZpesEYrOdKdf4wynKgm hlWA== MIME-Version: 1.0 X-Received: by 10.14.184.68 with SMTP id r44mr18523587eem.40.1364084000449; Sat, 23 Mar 2013 17:13:20 -0700 (PDT) Received: by 10.14.133.204 with HTTP; Sat, 23 Mar 2013 17:13:19 -0700 (PDT) In-Reply-To: References: Date: Sat, 23 Mar 2013 17:13:19 -0700 Message-ID: Subject: Re: hwpmc support for haswell From: hiren panchasara To: Jim Harris Content-Type: text/plain; charset=UTF-8 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: Sun, 24 Mar 2013 00:13:22 -0000 On Sat, Mar 23, 2013 at 8:58 AM, hiren panchasara wrote: > > On Mar 22, 2013 10:48 PM, "Jim Harris" wrote: >> >> >> >> 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. >> > Ah, good point. Let me try that and let you know. Jim, thanks for spotting this. Missing counters are fixed now. cheers, Hiren > > Thanks, > Hiren. >> Thanks, >> >> -Jim