From owner-freebsd-hackers@freebsd.org Tue Nov 6 09:01:23 2018 Return-Path: Delivered-To: freebsd-hackers@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 83F17110C680 for ; Tue, 6 Nov 2018 09:01:23 +0000 (UTC) (envelope-from steevanxperia@gmail.com) Received: from mail-oi1-x241.google.com (mail-oi1-x241.google.com [IPv6:2607:f8b0:4864:20::241]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 76E806D885 for ; Tue, 6 Nov 2018 09:01:22 +0000 (UTC) (envelope-from steevanxperia@gmail.com) Received: by mail-oi1-x241.google.com with SMTP id v83-v6so10064373oia.5 for ; Tue, 06 Nov 2018 01:01:22 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=hhy+C6Eqt+cvhZM560IDHNN8WrqfzoYVhW9ybjsAlCY=; b=kZRZYpRH+piZ4rGzR5Mr205YuF0RfiZfVgg6+2l5MXzryGGJ3dbzqk4fCkLSsffrVP 4sOYwW5Q5vYc3/yDwadjEg8JjkBo7pcGwVeDeHyH/qthglfS5rj5Dxg06GcrepbB5TZd o+JCmqGSl34qfzQuXGYS5O3dzm5oaVU5GMh1Nz0DDpz3xc6LiNgXDmHDhECfxebsAp3y UoEGkLYqTqiASa+zSBo3oQ8Mvubw9xbObZhXx2/BTXFVlkmdeaSgKgh9hWSl/oIpUENb OmFsZiIxNjSumTxGnD7m4o6Nz3OzUWvuKOzBXXrKe0fDK5wWkBnDWzGkBGoIGG6ACwNs kPIQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=hhy+C6Eqt+cvhZM560IDHNN8WrqfzoYVhW9ybjsAlCY=; b=VvhwSMPjlv2ZXNUeYR69PLer+rg5HQxdJ/o1IQRd+lwSZNxmPPjiKPnVwDyFG16rnM 1w69kxAYESkz54wMg5z3tvFx1D0X6/RjXprDN0w85UWlqS04q7bpxEYnzhCBxYB7EoqH UMqEK+T+4ipndV3or5PHu7Yt34Qhqip46aHr82mT3HPA/gmdnl9vYl3kmc4nnFD+P7Sy lB8g/Ll9JEpscsQ5jQvHo/kImwv+80Nm6moXNDKy/5EdeoNc2vCZsKPrrAA56RNvfPwl sguXRFevZEkhmvwyypuCc599zYjj/RY5xsOtLMLpGV12YWciNQYpR0Mv6DTsiUTcVJz7 H/vA== X-Gm-Message-State: AGRZ1gJTkVKgE37DcuuEm4KOIcdGzVqd6ZjCHAA/GcROSRwOYf/fH3NC t8Xzb6ZK8LbovTAMi+U1DP12ZXMqxJOiOqFQ+5c= X-Google-Smtp-Source: AJdET5c140+MshuljqX9X5SiZMpWv6/J38Kc6ieCBtiCC2iVjQRtBSGNsVGN1HkYt44lDZWUyVCxUNvYBrH1mrO4tAc= X-Received: by 2002:aca:6005:: with SMTP id u5-v6mr15464786oib.201.1541494881136; Tue, 06 Nov 2018 01:01:21 -0800 (PST) MIME-Version: 1.0 References: <7bb8463e-aa5d-bade-7ae7-6c612bae65f9@gmail.com> In-Reply-To: <7bb8463e-aa5d-bade-7ae7-6c612bae65f9@gmail.com> From: Steevan Rodrigues Date: Tue, 6 Nov 2018 14:31:09 +0530 Message-ID: Subject: Re: FreeBSD 11.x thread creation time is 9000+ microseconds on Intel Xeon Gold series CPU To: vhaisman@gmail.com Cc: freebsd-hackers@freebsd.org X-Rspamd-Queue-Id: 76E806D885 X-Spamd-Result: default: False [-3.30 / 200.00]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-0.99)[-0.994,0]; R_DKIM_ALLOW(-0.20)[gmail.com]; FROM_HAS_DN(0.00)[]; R_SPF_ALLOW(-0.20)[+ip6:2607:f8b0:4000::/36]; FREEMAIL_FROM(0.00)[gmail.com]; HAS_ATTACHMENT(0.00)[]; PREVIOUSLY_DELIVERED(0.00)[freebsd-hackers@freebsd.org]; TO_DN_NONE(0.00)[]; MIME_GOOD(-0.10)[multipart/mixed,multipart/alternative,text/plain]; NEURAL_SPAM_SHORT(0.24)[0.237,0]; NEURAL_HAM_LONG(-1.00)[-0.997,0]; TO_MATCH_ENVRCPT_SOME(0.00)[]; DKIM_TRACE(0.00)[gmail.com:+]; RCPT_COUNT_TWO(0.00)[2]; DMARC_POLICY_ALLOW(-0.50)[gmail.com,none]; MX_GOOD(-0.01)[cached: alt3.gmail-smtp-in.l.google.com]; RCVD_IN_DNSWL_NONE(0.00)[1.4.2.0.0.0.0.0.0.0.0.0.0.0.0.0.0.2.0.0.4.6.8.4.0.b.8.f.7.0.6.2.list.dnswl.org : 127.0.5.0]; FREEMAIL_TO(0.00)[gmail.com]; FROM_EQ_ENVFROM(0.00)[]; RCVD_TLS_LAST(0.00)[]; FREEMAIL_ENVFROM(0.00)[gmail.com]; ASN(0.00)[asn:15169, ipnet:2607:f8b0::/32, country:US]; RCVD_COUNT_TWO(0.00)[2]; IP_SCORE(-0.53)[ipnet: 2607:f8b0::/32(-1.14), asn: 15169(-1.46), country: US(-0.08)] X-Rspamd-Server: mx1.freebsd.org Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Content-Filtered-By: Mailman/MimeDel 2.1.29 X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 06 Nov 2018 09:01:23 -0000 Ok. Sorry about that. Again I have attached that test program as a tar file. I am not sure whether even this gets stripped by mailing list software. Anyway here is the program given below. #define _GNU_SOURCE #include #include #include #include #include #include #include #include #define CPU_NUM 5 #define CPUBIND void *myThreadFun(void *vargp) { sleep(1); printf("Printing from demo for thread creation time \n"); return NULL; } void main(void) { pthread_t thread_id; unsigned long int usec, usec2, sec, sec2; struct timeval tv, tv2; struct timezone tz; pthread_attr_t attr; #ifdef CPUBIND cpuset_t cset; const pid_t pid =3D getpid(); CPU_ZERO(&cset); CPU_SET(CPU_NUM,&cset); cpusetid_t setid; cpuset(&setid); //sched_setaffinity(pid, sizeof(cpu_set_t), &cset); //cpuset_setaffinity(CPU_LEVEL_CPUSET, CPU_WHICH_CPUSET, setid, sizeof(cpuset_t), &cset); cpuset_setaffinity(CPU_LEVEL_WHICH, CPU_WHICH_PID, pid, sizeof(cpuset_t), &cset); #endif pthread_attr_init(&attr); pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_JOINABLE); gettimeofday(&tv, &tz); // take time before creating thread pthread_create(&thread_id, &attr, myThreadFun, NULL); gettimeofday(&tv2, &tz); // take time after creation of thread pthread_join(thread_id, NULL); usec =3D tv.tv_usec; sec =3D tv.tv_sec; usec2 =3D tv2.tv_usec; sec2 =3D tv2.tv_sec; printf("Thread creation time details are: \n"); printf("Before: Sec %lu usec %lu After: Sec %lu usec %lu : SecDiff %lu UsecDiff %lu \n", sec, usec, sec2, usec2, sec2 - sec , usec2 - usec); } --------------------------------------------- Thanks Steevan On Tue, Nov 6, 2018 at 12:34 PM V=C3=A1clav Haisman wr= ote: > On 06. 11. 18 5:01, Steevan Rodrigues wrote: > > Hi , > > I am seeing a FreeBSD 11.x OS poor performance issue . > > CPU is Intel(R) Xeon(R) Gold 5115 CPU @ 2.40GHz ( dual socket CPU with = 10 > > cores per socket ) > > > > I have attached a simple program which creates thread and computes time > > There is no attachment. The mailing list software probably stripped that. > > > taken to create this thread. On this CPU with FreeBSD 11.x OS it takes > 9000 > > to 15000 micro seconds ( us) to create > > just one thread. > > > > On other platforms this thread creation time is usually 20 to 30 us onl= y. > > Any idea why it takes so much more time with FreeBSD 11.x ? > > Is there any processor specific tuning that needs to be done ? > > > > Thanks, > > Steevan > > _______________________________________________ > > freebsd-hackers@freebsd.org mailing list > > https://lists.freebsd.org/mailman/listinfo/freebsd-hackers > > To unsubscribe, send any mail to " > freebsd-hackers-unsubscribe@freebsd.org" > > > > > -- > VH > >