From owner-freebsd-questions@freebsd.org Tue Jan 3 21:38:46 2017 Return-Path: Delivered-To: freebsd-questions@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 1FCDFC9ECFB for ; Tue, 3 Jan 2017 21:38:46 +0000 (UTC) (envelope-from ricera10@gmail.com) Received: from mail-oi0-f52.google.com (mail-oi0-f52.google.com [209.85.218.52]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id E48F01A37 for ; Tue, 3 Jan 2017 21:38:45 +0000 (UTC) (envelope-from ricera10@gmail.com) Received: by mail-oi0-f52.google.com with SMTP id 128so328105274oig.0 for ; Tue, 03 Jan 2017 13:38:45 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to; bh=LdoPNOIWXKkZ2BlfRXHR767hyO79t0cSKoCifCb/8AI=; b=tjtQ+vM9Hlix4zKDSFZe7YHIoFB8dqk1uMcwllOzjTUUCI644WsKKJnaiHhUptXd0s bWr6va7Gl26kWRzuAiv3dVM2BiOGIoT/IY4qQs6kDbespavi6Xqs1cXDqHHfaWhu91oc PVRzFrIv24zyQ4FlHvs3RM4d+EeEQ2Vkds9CKX2kAYK+Wg8BfkbTGvT/3GdEm0D76GCT YCFUsTb71rFZCTSExthEHYBw2S8JcasU9eOKHMhNFAEPsZzwbgWREOFK/eR8l/sphz5X /uR4XNi/Wv3wGbeojAH1D4YNMfwersmD6TaORn6gXu/KQcmgliMdL6IVpegorKz8w+T3 cO9A== X-Gm-Message-State: AIkVDXLMljMd7vcoL3dFMWY3nd/m+yNWLhZ4q3kDAuVMQTuxUJ/4XRxjmuJpa3OAtIPHEw== X-Received: by 10.202.98.139 with SMTP id w133mr30555524oib.44.1483479518992; Tue, 03 Jan 2017 13:38:38 -0800 (PST) Received: from mail-oi0-f44.google.com (mail-oi0-f44.google.com. [209.85.218.44]) by smtp.gmail.com with ESMTPSA id q130sm33241213oif.25.2017.01.03.13.38.38 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 03 Jan 2017 13:38:38 -0800 (PST) Received: by mail-oi0-f44.google.com with SMTP id v84so522355354oie.3 for ; Tue, 03 Jan 2017 13:38:38 -0800 (PST) X-Received: by 10.157.35.195 with SMTP id t61mr28716622otb.263.1483479518633; Tue, 03 Jan 2017 13:38:38 -0800 (PST) MIME-Version: 1.0 From: Eric Joyner Date: Tue, 03 Jan 2017 21:38:28 +0000 X-Gmail-Original-Message-ID: Message-ID: Subject: How many CPU cores does FreeBSD support? To: freebsd-questions Content-Type: text/plain; charset=UTF-8 X-Content-Filtered-By: Mailman/MimeDel 2.1.23 X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 03 Jan 2017 21:38:46 -0000 I have an 11.0-RELEASE-p1 system with: hw.model: Intel(R) Xeon Phi(TM) CPU 7250 @ 1.40GHz It's got 68 cores, but with 4-way SMT, I think it should show up with 272 logical cores on FreeBSD. However, in both kern.sched.topology_spec and hw.ncpu, it shows there are only 223 cores. Is the limit effectively 223 cores, even though I see some #define MAXCPU 256 lines in the source? - Eric