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  1. #1
    Untanglit
    Join Date
    May 2011
    Posts
    28

    Default CPU load with HyperThreading

    I'm running UT 8.1.1 on a quad core PowerEdge 1850. this machine has Hyper Threading enabled - does that mean my load is at 100% when it's at 4.00 or 8.00?

  2. #2
    Untangler scimanal's Avatar
    Join Date
    Oct 2009
    Location
    Portland, OR
    Posts
    62

    Default

    You will be at 100% at 8.00 You will be at a "high" load at 4.00 since that is the number of real cores. I would try to load that box such that 4.00 and above is seen only during peak with average at 2.0 or lower. Usually UT just hums along so I would be surprised if the CPU was too high.

  3. #3
    Untanglit
    Join Date
    May 2011
    Posts
    28

    Default

    Thanks for that - do the daily reports show CPU time, or would I be better off monitoring via SNMP?

  4. #4
    Untangle Ninja sky-knight's Avatar
    Join Date
    Apr 2008
    Location
    Phoenix, AZ
    Posts
    26,490

    Default

    Hyperthreading doesn't really help Untangle much. The extra cores are what help.
    Rob Sandling, BS:SWE, MCP
    NexgenAppliances.com
    Phone: 866-794-8879 x201
    Email: support@nexgenappliances.com

  5. #5
    Untanglit
    Join Date
    May 2011
    Posts
    28

    Default

    So, if I understand right, 8.00 load is *technically* %100 CPU utilization, but 98% of REAL CPU is between 0-4.00?

    So far we're averaging 1.7, but I'm unable to push my connection past 38Mb - without UT it is 50Mb steady, with bursts as high as 90Mb (according to SpeakEasy's speed test).

  6. #6
    Untangler
    Join Date
    Sep 2007
    Posts
    31

    Default

    Try using other speed tests.. My 50mb connection shows around 30-40 on speakeasy but is actually able to do full speed. Maybe at a non peak time, try to download a (legal) torrent with a lot of seeds and see what speed you get.. this should simulate lots of user connections with pretty high speed. Also, your ISP might offer a speed testing server.

    What type of network cards are you using? I know untangle works better with some cards than others. Also, do you have lots of internal traffic crossing networks/subnets using the untangle as the router? This could cause congestion as well.

  7. #7
    Untanglit
    Join Date
    May 2011
    Posts
    28

    Default

    Excellent idea - I was able to download 2GB from usenet at 50Mb steady, with an average load of ~3.00.

    For anyone else's reference, this is a PowerEdge 1850 with 2x dual core 2.8 Xeon (800Mhz FSB), onboard NICs (probably broadcom), 14GB RAM in bridge mode.

    Thanks for the assist!

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