{"id":1153,"date":"2008-08-13T22:17:55","date_gmt":"2008-08-13T22:17:55","guid":{"rendered":"http:\/\/www.markwilson.co.uk\/blog\/2008\/08\/yes-you-can-use-all-the-processing-power-on-a-multi-core-system.htm"},"modified":"2008-08-13T22:46:41","modified_gmt":"2008-08-13T22:46:41","slug":"yes-you-can-use-all-the-processing-power-on-a-multi-core-system","status":"publish","type":"post","link":"https:\/\/www.markwilson.co.uk\/blog\/2008\/08\/yes-you-can-use-all-the-processing-power-on-a-multi-core-system.htm","title":{"rendered":"Yes, you can use all the processing power on a multi-core system"},"content":{"rendered":"<p>I&#8217;ve heard a few comments recently about it not being worth buying multi-core processors because it&#8217;s impossible to harness all of the processing power and I have to say that is a pile of stuff and nonsense (putting it politely).<\/p>\n<p>Well, it is nonsense if the operating system can recognise multiple processors (and Windows NT derivatives have had multi-processor support for as long as I can remember) but it also has a lot to do with the software in use.  If everything is single threaded (it shouldn&#8217;t be these days), then the operating system scheduler can&#8217;t spread the threads out and make the most of it&#8217;s processing capabilities.<\/p>\n<p>Anyway, I&#8217;ve been maxxing out a 2.2GHz Core2Duo-based notebook PC for the last couple of days with no difficulties whatsoever.  My basic workload is Outlook 2007, Office Communicator 2007, Internet Explorer (probably a few windows, each with a couple of dozen tabs open) and the usual bunch of processes running in the background (anti-virus, automatic updates, etc.).  Yesterday, I added three virtual machines to that mix, running on a USB2-attached hard drive (which, unlike a Firewire drive, also requires a big chunk of processing) as well as <a href=\"https:\/\/www.markwilson.co.uk\/blog\/2007\/12\/snagit.htm\">TechSmith SnagIt<\/a>, as I was testing and documenting a design that I was working on and that did slow my system down a little (the first time there has been any significant paging on this system, which runs 64-bit Windows Server 2008 and has 4GB of RAM).<\/p>\n<p>Then, today, I was compressing video using Camtasia Studio 5 (another TechSmith product) and, despite having closed all other running applications besides a couple of Explorer windows, it was certainly making full use of my system as the screenshots below show. Watch the CPU utilisation as I start to render my final video output:<\/p>\n<p><img data-recalc-dims=\"1\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/www.markwilson.co.uk\/blog\/images\/taskmanager-startrendering.png?w=700&#038;ssl=1\" alt=\"Windows Task Manager showing increased CPU utilisation as video rendering commences\" class=\"inline\"\/><\/p>\n<p>during rendering:<\/p>\n<p><img data-recalc-dims=\"1\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/www.markwilson.co.uk\/blog\/images\/taskmanager-rendering.png?w=700&#038;ssl=1\" alt=\"Windows Task Manager showing increased CPU utilisation as video rendering commences\" class=\"inline\"\/><\/p>\n<p>and after the task was completed, when CPU activity dropped to a more normal level:<\/p>\n<p><img data-recalc-dims=\"1\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/www.markwilson.co.uk\/blog\/images\/taskmanager-renderingcomplete.png?w=700&#038;ssl=1\" alt=\"Windows Task Manager showing increased CPU utilisation as video rendering commences\" class=\"inline\"\/><\/p>\n<p>Of course, a lot of this would have been offloaded to the GPU if I had a decent graphics card (this PC has an Intel GMA965 controller onboard) but I think this proves that multiple processor cores <em>can<\/em> be fully utilised without too much effort&#8230;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>I&#8217;ve heard a few comments recently about it not being worth buying multi-core processors because it&#8217;s impossible to harness all of the processing power and I have to say that is a pile of stuff and nonsense (putting it politely). Well, it is nonsense if the operating system can recognise multiple processors (and Windows NT &hellip; <a href=\"https:\/\/www.markwilson.co.uk\/blog\/2008\/08\/yes-you-can-use-all-the-processing-power-on-a-multi-core-system.htm\" class=\"more-link\">Continue reading <span class=\"screen-reader-text\">Yes, you can use all the processing power on a multi-core system<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[],"tags":[104,32],"class_list":["post-1153","post","type-post","status-publish","format-standard","hentry","tag-windows-server-2008","tag-pc-hardware"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Yes, you can use all the processing power on a multi-core system - markwilson.it<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.markwilson.co.uk\/blog\/2008\/08\/yes-you-can-use-all-the-processing-power-on-a-multi-core-system.htm\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Yes, you can use all the processing power on a multi-core system - markwilson.it\" \/>\n<meta property=\"og:description\" content=\"I&#8217;ve heard a few comments recently about it not being worth buying multi-core processors because it&#8217;s impossible to harness all of the processing power and I have to say that is a pile of stuff and nonsense (putting it politely). 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Various Microsoft representatives\u2026","rel":"","context":"In \"Software licensing\"","block_context":{"text":"Software licensing","link":"https:\/\/www.markwilson.co.uk\/blog\/tag\/software-licensing"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":1426,"url":"https:\/\/www.markwilson.co.uk\/blog\/2009\/05\/windows-7-xp-mode-and-windows-virtual-pc-how-it-works.htm","url_meta":{"origin":1153,"position":3},"title":"Windows 7 XP Mode and Windows Virtual PC: How it works","author":"Mark Wilson","date":"Wednesday 13 May 2009","format":false,"excerpt":"For the last couple of weeks the news sites have been full of speculation and gossip about what is now referred to as Windows 7 XP Mode and Windows Virtual PC. Most of the reporting so far has focused on the high level concepts and, as the beta went live\u2026","rel":"","context":"In \"Microsoft Enterprise Desktop Virtualization (MED-V)\"","block_context":{"text":"Microsoft Enterprise Desktop Virtualization (MED-V)","link":"https:\/\/www.markwilson.co.uk\/blog\/tag\/med-v"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":269,"url":"https:\/\/www.markwilson.co.uk\/blog\/2006\/04\/rise-of-64-bit-windows-server.htm","url_meta":{"origin":1153,"position":4},"title":"The rise of 64-bit Windows server computing","author":"Mark Wilson","date":"Monday 10 April 2006","format":false,"excerpt":"A few months back, when Microsoft announced that many of its forthcoming server products would be 64-bit only, I confessed that I don't know a lot about 64-bit computing. That all changed last week when I attended two events (the first sponsored by Intel and the second by AMD) where\u2026","rel":"","context":"In \"Microsoft Windows\"","block_context":{"text":"Microsoft Windows","link":"https:\/\/www.markwilson.co.uk\/blog\/tag\/windows"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":1259,"url":"https:\/\/www.markwilson.co.uk\/blog\/2008\/10\/just-a-few-of-the-new-features-to-expect-in-windows-server-2008-r2.htm","url_meta":{"origin":1153,"position":5},"title":"Just a few of the new features to expect in Windows Server 2008 R2","author":"Mark Wilson","date":"Monday 27 October 2008","format":false,"excerpt":"In case you hadn't noticed, it's Microsoft's conference season - PDC this week, WinHEC next, TechEd EMEA the two weeks after that... lots of announcements - and I'm missing them all! Luckily, last week I got the chance to catch up with Ward Ralston (a Group Technical Product Manager in\u2026","rel":"","context":"In \"Microsoft Virtual Server\/Hyper-V\"","block_context":{"text":"Microsoft Virtual Server\/Hyper-V","link":"https:\/\/www.markwilson.co.uk\/blog\/tag\/hyper-v"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.markwilson.co.uk\/blog\/wp-json\/wp\/v2\/posts\/1153","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.markwilson.co.uk\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.markwilson.co.uk\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.markwilson.co.uk\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.markwilson.co.uk\/blog\/wp-json\/wp\/v2\/comments?post=1153"}],"version-history":[{"count":0,"href":"https:\/\/www.markwilson.co.uk\/blog\/wp-json\/wp\/v2\/posts\/1153\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.markwilson.co.uk\/blog\/wp-json\/wp\/v2\/media?parent=1153"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.markwilson.co.uk\/blog\/wp-json\/wp\/v2\/categories?post=1153"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.markwilson.co.uk\/blog\/wp-json\/wp\/v2\/tags?post=1153"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}