From owner-freebsd-bugs@freebsd.org Mon Dec 24 07:41:53 2018 Return-Path: Delivered-To: freebsd-bugs@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 127F513384DF for ; Mon, 24 Dec 2018 07:41:53 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mailman.ysv.freebsd.org (mailman.ysv.freebsd.org [IPv6:2001:1900:2254:206a::50:5]) by mx1.freebsd.org (Postfix) with ESMTP id 9F39C73BD4 for ; Mon, 24 Dec 2018 07:41:52 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: by mailman.ysv.freebsd.org (Postfix) id 5D03A13384CA; Mon, 24 Dec 2018 07:41:52 +0000 (UTC) Delivered-To: bugs@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 4B7DF13384C7 for ; Mon, 24 Dec 2018 07:41:52 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.ysv.freebsd.org (mxrelay.ysv.freebsd.org [IPv6:2001:1900:2254:206a::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.ysv.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 0BFFC73BC7 for ; Mon, 24 Dec 2018 07:41:52 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2001:1900:2254:206a::16:76]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.ysv.freebsd.org (Postfix) with ESMTPS id 393FD1905C for ; Mon, 24 Dec 2018 07:41:51 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.118]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id wBO7fpMv073740 for ; Mon, 24 Dec 2018 07:41:51 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id wBO7fpCg073739 for bugs@FreeBSD.org; Mon, 24 Dec 2018 07:41:51 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 234325] pmcstat seems to be broken in sampling mode (at least on amd hardware) Date: Mon, 24 Dec 2018 07:41:50 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: misc X-Bugzilla-Version: 12.0-RELEASE X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: shamaz.mazum@gmail.com X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: bugs@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_id short_desc product version rep_platform op_sys bug_status bug_severity priority component assigned_to reporter Message-ID: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 24 Dec 2018 07:41:53 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D234325 Bug ID: 234325 Summary: pmcstat seems to be broken in sampling mode (at least on amd hardware) Product: Base System Version: 12.0-RELEASE Hardware: amd64 OS: Any Status: New Severity: Affects Only Me Priority: --- Component: misc Assignee: bugs@FreeBSD.org Reporter: shamaz.mazum@gmail.com Hello. I use FreeBSD 12.0-RELEASE on two machines (one with Ryzen 5 1600X processor and the other with FX-6300). Recently (presumable after upgrading to 12.0-RELEASE) pmcstat stopped worki= ng in sample mode. I run it as: `pmcstat -P instructions -O test.out -n 65536 ./noisecpu` on FX-6300 or `pmcstat -P ex_ret_instr -O test.out -n 65536 ./noisecpu` on Ryzen and then I run `pmcstat -R test.out -g` In both cases it creates directories (e.g. ex_ret_instr) which are either e= mpty or containing only kernel.gmon `noisecpu` is computation heavy program, calculating value noise on a large grid and works for ~8 seconds. Conversion statistics usually looks like following: #exec/elf 1 #samples/total 169 #samples/unclaimed 165 #callchain/dubious-frames 165 In counting mode (with -p argument) everything seems to be working. Can any= body confirm this? --=20 You are receiving this mail because: You are the assignee for the bug.=