From owner-freebsd-current@FreeBSD.ORG Sat Mar 23 15:58:30 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 D42A7BE0; Sat, 23 Mar 2013 15:58:30 +0000 (UTC) (envelope-from hiren.panchasara@gmail.com) Received: from mail-ea0-x22d.google.com (mail-ea0-x22d.google.com [IPv6:2a00:1450:4013:c01::22d]) by mx1.freebsd.org (Postfix) with ESMTP id 195C6A7D; Sat, 23 Mar 2013 15:58:29 +0000 (UTC) Received: by mail-ea0-f173.google.com with SMTP id h14so1749379eak.18 for ; Sat, 23 Mar 2013 08:58:29 -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=vldPR4vWTh3ZHcF0ysoKEfDEP3g/JzcKLYhOYXHXNFg=; b=aeOe1cV1onHeDMXeo+EV0S/hNqs8xeQTUmnREbvYSMCmcuTpB3Cn1bMaYCgQQ3bj0z VDfRJ8sQBs9prvUW13KoxF0iVpJqwTZkdA0svpWvDayRYExA8zIz7FvsixaV4j1VMliZ zE3+0fEi4N/HDntPAfO4BuxmFM/1DE6AAdgo0OPmIgQby4zQy6TBqxdvV/hSop2y3XYk 3PDo6+MraUR3zh6GZfjVIKIVVgq826hDSreN5LtxK34AZiU7xjZJARdlaUeNFNgCDrQd BJf77DWcLEkBxCTSO9ff7of2p75cGZgbZU08I/nSAF9M4X4NadPBmLLpaqwPjunvYRPd JoFg== MIME-Version: 1.0 X-Received: by 10.14.194.198 with SMTP id m46mr15652830een.8.1364054308992; Sat, 23 Mar 2013 08:58:28 -0700 (PDT) Received: by 10.14.133.204 with HTTP; Sat, 23 Mar 2013 08:58:28 -0700 (PDT) Received: by 10.14.133.204 with HTTP; Sat, 23 Mar 2013 08:58:28 -0700 (PDT) In-Reply-To: References: Date: Sat, 23 Mar 2013 08:58:28 -0700 Message-ID: Subject: Re: hwpmc support for haswell From: hiren panchasara To: Jim Harris Content-Type: text/plain; charset=UTF-8 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 15:58:30 -0000 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. Thanks, Hiren. > Thanks, > > -Jim