From owner-freebsd-threads@freebsd.org Thu Nov 22 05:17:04 2018 Return-Path: Delivered-To: freebsd-threads@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 23E661137B27 for ; Thu, 22 Nov 2018 05:17:04 +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 AF5808AABA for ; Thu, 22 Nov 2018 05:17:03 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: by mailman.ysv.freebsd.org (Postfix) id 721D41137B26; Thu, 22 Nov 2018 05:17:03 +0000 (UTC) Delivered-To: threads@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 372901137B25 for ; Thu, 22 Nov 2018 05:17:03 +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)) (Client CN "mxrelay.ysv.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id C96C78AAB9 for ; Thu, 22 Nov 2018 05:17:02 +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 DF55D6F15 for ; Thu, 22 Nov 2018 05:17:01 +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 wAM5H173067405 for ; Thu, 22 Nov 2018 05:17:01 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id wAM5H1D9067404 for threads@FreeBSD.org; Thu, 22 Nov 2018 05:17:01 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: threads@FreeBSD.org Subject: [Bug 233396] In FreeBSD 11.x thread creation time is too much on Xeon Gold 5115 CPU Date: Thu, 22 Nov 2018 05:17:01 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: threads X-Bugzilla-Version: 11.2-STABLE X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Some People X-Bugzilla-Who: steevanxperia@gmail.com X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: threads@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 attachments.mimetype attachments.created 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-Rspamd-Queue-Id: AF5808AABA X-Spamd-Result: default: False [1.46 / 15.00]; local_wl_from(0.00)[freebsd.org]; NEURAL_SPAM_LONG(0.42)[0.416,0]; NEURAL_SPAM_MEDIUM(0.36)[0.355,0]; ASN(0.00)[asn:10310, ipnet:2001:1900:2254::/48, country:US]; NEURAL_SPAM_SHORT(0.69)[0.685,0] X-Rspamd-Server: mx1.freebsd.org X-BeenThere: freebsd-threads@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Threading on FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 22 Nov 2018 05:17:04 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D233396 Bug ID: 233396 Summary: In FreeBSD 11.x thread creation time is too much on Xeon Gold 5115 CPU Product: Base System Version: 11.2-STABLE Hardware: amd64 OS: Any Status: New Severity: Affects Some People Priority: --- Component: threads Assignee: threads@FreeBSD.org Reporter: steevanxperia@gmail.com Attachment #199443 text/plain mime type: Created attachment 199443 --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=3D199443&action= =3Dedit simple c code Hi=20 I have attached simple program which just creates one thread and computes t= ime taken to create a thread.=20 System Details:=20 dmesg | grep CPU CPU: Intel(R) Xeon(R) Gold 5115 CPU @ 2.40GHz (2400.07-MHz K8-class CPU) FreeBSD/SMP: Multiprocessor System Detected: 40 CPUs System Information Manufacturer: Supermicro Product Name: Super Server Version: 0123456789 Base Board Information Manufacturer: Supermicro Product Name: X11DPH-Tq Version: 1.01 On this system it takes about 6000 to 15000 microseconds ( usec) to create a thread.=20 I also ran Phoronix OS bench test suite and that also shows same issue. Couple of other users have also reported this issue for FreeBSD 11.x=20 Please see these following links and look for "Create Threads" row. https://openbenchmarking.org/result/1804094-AR-1804096AR58 https://openbenchmarking.org/result/1807114-RA-WINDOWSSE47 On the other hand this issue is not found when I run FreeBSD 12.0 Beta3 on this same hardware. It takes about 200 to 300 usec to create one thread.=20 Regards Steevan --=20 You are receiving this mail because: You are the assignee for the bug.=