[Chicago-talk] Limiting system impact.

[Elias Lutfallah]

Maybe you can store the data to temp files until you actually need to 
use it? That way you're not using as much memory at one time. Just make 
sure to delete the data from the hashes once it's saved.

Not knowing the details of what the data is or how it's being processed, 
I have no idea if this would be a good thing.

tiger peng wrote:
> Nice may not be a nice solution. Try if the file can be chopped down to small pieces
>
> ----- Original Message ----
> From: Don Drake <don at drakeconsult.com>
> To: Chicago.pm chatter <chicago-talk at pm.org>
> Sent: Wednesday, May 9, 2007 2:17:15 PM
> Subject: Re: [Chicago-talk] Limiting system impact.
>
> # man nice
>
> -Don
>
> -----Original Message-----
> From: chicago-talk-bounces+don=drakeconsult.com at pm.org
> [mailto:chicago-talk-bounces+don=drakeconsult.com at pm.org] On Behalf Of Jim
> Jacobus
> Sent: Wednesday, May 09, 2007 2:13 PM
> To: chicago-talk at pm.org
> Subject: [Chicago-talk] Limiting system impact.
>
>
> Is there any way to limit, from within the Perl script, the amount of 
> memory or CPU a Perl process utilizes? I've got a script on a Redhat 
> Linux system that crunches a lot of data. Script and output are ok, 
> but the process can take up to 30 minutes wall clock time. As a 
> result the system appears to slow down considerably until the the 
> script finishes. I tried adding a few WAIT commands in the script, 
> but it didn't help much. The system reads some really large files, 
> parses the info and stores it in some hashes for later processing. So 
> I'm using I/o, memory and CPU. It would be good if I could lower the 
> process priority of the script when it's running so the O/S could 
> give more weight to other processes.
>
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