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Hyperthreading Hurts Server Performance?

Posted by CowboyNeal on from the opposite-effects dept.

sebFlyte writes "ZDNet is reporting that enabling Intel's new Hyperthreading Technology on your servers could lead to markedly decreased performance, according to some developers who have been looking into problems that have been occurring since HT has been shipping automatically activated. One MS developer from the SQL server team put it simply: 'Our customers observed very interesting behaviour on high-end HT-enabled hardware. They noticed that in some cases when high load is applied SQL Server CPU usage increases significantly but SQL Server performance degrades.' Another developer, this time from Citrix, was just as blunt. 'It's ironic. Intel had sold hyperthreading as something that gave performance gains to heavily threaded software. SQL Server is very thread-intensive, but it suffers. In fact, I've never seen performance improvement on server software with hyperthreading enabled. We recommend customers disable it.'"

5 of 255 comments (clear)

  1. Behold! by alphapartic1e · · Score: 5, Funny

    Perhaps this ushers a new era of computing, where Intel chips underperform AMD ones.

    Oh, wait...

  2. So, what do we call this? by jcr · · Score: 5, Funny

    Hyperthrashing?

    -jcr

    --
    The only title of honor that a tyrant can grant is "Enemy of the State."
  3. Re:HT kills my ATI All in Wonder by sm8000 · · Score: 5, Funny

    You watched TV for 48 hours?

  4. Re:HT kills my ATI All in Wonder by puto · · Score: 4, Funny

    Just your mom on a Cinemax weekend hump-a-thon.

    I left it on for 48 hours unattended.

    Puto

    --
    The Revolution Will Not Be Televised
  5. Breaking the EULA ? by DrSkwid · · Score: 4, Funny

    I thought you couldn't report any performance issues of MS SQL Server :)

    --
    There are places where the networks are not touching,and there are places where they are-Boeing's Lori Gunter