CPU Throttling

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DanNeely
DanNeely
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7 May 2007 13:38:24 UTC
Topic 192694
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    A while back I remember seeing some discussion of a way to limit the maximum share of CPU time an app could consume even if nothing else was loading the processor. I believe that most of the discussion was in the context of keeping laptops from overheating. I need a tool to do the same thing to throttle a badly behaving application that is hammering the CPU hard enough to cause the UI threads of other applications to become largely nonresponsive. While twiddling my thumbs for half an hour and getting paid does have some small degree of personal appeal my employer understandably feels different about the matter.

    Bikeman (Heinz-Bernd Eggenstein)
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    CPU Throttling

    7 May 2007 13:41:55 UTC
    Message 63989
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      Quote:
      A while back I remember seeing some discussion of a way to limit the maximum share of CPU time an app could consume even if nothing else was loading the processor. I believe that most of the discussion was in the context of keeping laptops from overheating. I need a tool to do the same thing to throttle a badly behaving application that is hammering the CPU hard enough to cause the UI threads of other applications to become largely nonresponsive. While twiddling my thumbs for half an hour and getting paid does have some small degree of personal appeal my employer understandably feels different about the matter.

      What would be the OS the app is running under?

      CU

      BRM

      Michael Karlinsky
      Michael Karlinsky
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      RE: I need a tool to do the

      7 May 2007 13:42:13 UTC
      Message 63990
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        Quote:
        I need a tool to do the same thing to throttle a badly behaving application that is hammering the CPU hard enough to cause the UI threads of other applications to become largely nonresponsive. While twiddling my thumbs for half an hour and getting paid does have some small degree of personal appeal my employer understandably feels different about the matter.

        Threadmaster

        HTH

        Michael

        Team Linux Users Everywhere

        Bernd Machenschalk
        Bernd Machenschalk
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        Doesn't CPU-throtteling work

        7 May 2007 13:50:04 UTC
        Message 63991
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          Doesn't CPU-throtteling work with newest (Development) BOINC Clients?

          BM

          BM

          DanNeely
          DanNeely
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          It's a windows XP machine.

          7 May 2007 13:54:08 UTC
          Message 63992
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            It's a windows XP machine. Since TMs website only mentions 2k and 2k3 server will I have any problems running it?

            DanNeely
            DanNeely
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            The badly behaved app I need

            7 May 2007 13:55:29 UTC
            Message 63993
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              The badly behaved app I need to stomp on isn't boinc related. I don't want to name names but it's one of the Irrational spawn of a computing mega corp that predates the vacuum tube.

              Richard Haselgrove
              Richard Haselgrove
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              Does a reference to this SETI

              7 May 2007 13:58:08 UTC
              Message 63994
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                Does a reference to this SETI problem/solution help?

                DanNeely
                DanNeely
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                Not sure. Seti's been

                7 May 2007 13:59:21 UTC
                Message 63995
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                  Not sure. Seti's been blocked by netnanny.

                  Richard Haselgrove
                  Richard Haselgrove
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                  Problem: RE: This is a

                  7 May 2007 14:02:02 UTC
                  Message 63996
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                    Problem:

                    Quote:

                    This is a strange issue I have not seen on any other platforms I have (including some dual-core Athlons.)

                    Platform: Core Duo T2400 1.83GHz Laptop.
                    OS: Windows XP SP2
                    BOINC 5.7.2, Boinc 5.6.5, Boinc 5.4.11

                    Symptoms: When BOINC/Seti (or any other project) is running, I can't hibernate, can't open word or excel files by clicking on the file. Can't open a web page by clicking on a link in Thunderbird (whether or not Firefox is running at the time.)

                    As soon as boinc stops running either by being paused or suspended, or even when I use CPU throttling (which actually (but may be irrelevant)just pauses the app/s regularly) then word/excel document opens, the link is opened, or the laptop suspends.

                    In other words, the action I tried to do goes into some resource wait state and does not go forward until the CPU drops below 100% - it is waiting for BOINC. This of course should not happen. Nothing should have to wait for BOINC.

                    Happens with all recent versions of BOINC that I have tried.

                    Edit: This behaviour does not happen for opening all file types. It happens for Word and Excel, but not PPT and PDF. One thing I can see that is consistent across the file types is that those file types that have a problem have a DDE message in the "open" section under "file types", whereas those that do not have a DDE message. (although they might use DDE)


                    Solution:

                    Quote:

                    Found the problem. It's called "Thinkvantage Away Manager". It's a piece of IBM bloatware that is supposed to improve performance by stopping some tasks from running when the CPU is busy. Seems to me it chains itself into some software interrupts and then refuses to run when CPU is 100%.

                    Anything chained behind it in the SWIs waits forever to run.

                    Uninstalled it and everything is fine now....

                    DanNeely
                    DanNeely
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                    I don't have anything called

                    7 May 2007 14:15:34 UTC
                    Message 63997
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                      I don't have anything called "Thinkvantage Away Manager" in add/remove programs, listed as a service, or anything with a similar name in my running process list.

                      Richard Haselgrove
                      Richard Haselgrove
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                      RE: I don't have anything

                      7 May 2007 14:39:49 UTC
                      Message 63998 in response to message 63997
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                        Quote:
                        I don't have anything called "Thinkvantage Away Manager" in add/remove programs, listed as a service, or anything with a similar name in my running process list.


                        Oh well, false alarm then, but I thought it was worth a try - you were a bit coy about the finer details of your question, but some of the clues seemed to fit.

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