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How To Limit Disk Usage in Win 7?

post #1 of 4
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I have a process in the background on Windows 7 that I want to leave running, but at random times it takes the entire disk queue causing other programs and internet browsing to run slow. Is there any way to limit how much a certain process can read from or write to the disk without getting too technical? For example if the process in question is writing 112,541,324 B/sec, how do I tell it not to do more than 50K/sec?
post #2 of 4
Lower the subject processe's priority.

Ctrl/Alt/Del >Task Manager > Processes > Right click the subject process > Set Priority.
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post #3 of 4
I'd direct such processes to an external drive.
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post #4 of 4
Quote:
Originally Posted by billbartuska View Post

Lower the subject processe's priority.

Ctrl/Alt/Del >Task Manager > Processes > Right click the subject process > Set Priority.

    Process Priority probably won't help because one huge write will only take a brief amount of process CPU, and then the System process will do all the actual writes at normal priority.  In addition, a process with low/idle priority will only run slower if there is another process using 100% of the CPU for that given instant in time.  But if everyone is waiting on the HDD, CPU usage will be low.

    @GhostRavenstorm: Try lowering the I/O priority of the process in Process Hacker.  This won't limit the I/O bandwidth to a particular number, but it should cause Windows to suspend I/O for that program when the HDD has other pending requests to fulfill.  Process Hacker -> Right-click process -> Miscellaneous -> I/O Priority -> Very Low.
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