Finding computer bottleneck

Posted on 2007-07-23
Last Modified: 2010-05-18
How can I find out whats my computer bottleneck??

Is there any application that tells you whats the slowest/most loaded part of your computer??
Question by:axtur
    LVL 22

    Expert Comment

    If you are running a Windows operating system, Task Manager can tell you what's consuming CPU cycles at any fiven time.
    LVL 3

    Expert Comment

    This Utility is pretty good:
    LVL 44

    Assisted Solution

    Windows task manager is good for the applications themselves, but it doesn;t tell you anything about the hardware bottlenecks, like slow network cards, modems, and so forth.  If you can tell us what the problem is -- like is it when you get on the net? -- we can probably help with more detail.

    SIS  SANDRA is one of the best hardware monitor detects and benchmarks there is, it is NO good for software, but it is great for hardware.  You have to guess where the problem is first, to pick the right tool
    LVL 11

    Accepted Solution

    On Windows, in the control panel administration tools, there are also tools to log the usage of disk/ram/cpu, etc.

    Usually, the bottleneck will be either:
    1) The cpu
    2) the Ram
    3) The hard disks
    4) any other I/O, network, serial ports, etc

    To "fix" each, there's not much you can do:
    1) Cpu, you can upgrade to a faster one (or multiple ones if possible/applicable)
    2) Ram, it will depend on the speed your chipset/motherboard can access it.
    3) To increase HD throughput, you can either get faster/multiple disks, or set them up in RAID
    4) Get the fastest I/O cards you can get (Or multiple ones if applicable)

    For example: a recent motherboard, with 1333Mhz Bus, low latency RAM, a QuadCore CPU, Gigabit Ethernet and 2 or 4 HD's in Raid 0 (SCSI if you want it).
    As you can see, it's quite "easy" to max out each subsystem even on a "regular" PC unless you're willing to go into "extreme/costly" setups or specialized systems for a specific task.
    LVL 91

    Assisted Solution

    the bottleneck will depend on what you want to do.
    intensive cpu using programs, will find it in ram, cpu, and memory controller (eg video editing)
    intensive disk using programs, will find it in disk, disk controller, and disk cache
    intensive video using programs, will find it in the video card and interface (eg games )
    LVL 6

    Expert Comment

    You have not mentioned operating system. If it is Windows, you can use default tool - perfmon. Just add counters like 'Physical disk - %Idle time', 'Processor - %Processor time' and so on. With some effort you can get detailed reports what system parts is used most.

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