Dsh command - shell script - sys args? Post: 302905752

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Top Forums Shell Programming and Scripting Dsh command - shell script - sys args? Post 302905752 by Corona688 on Friday 13th of June 2014 02:04:16 PM

06-13-2014

Registered User

Quote:

Originally Posted by pc2001

Sorry, a noobie question....!

I want to use a linux cluster to copy a list of files. I want to split the processing over 3 nodes so that each node gets (more or less) an equal share.

Let's stop and think about this. Three CPU's can run programs faster, because they can run independently of each other. But how exactly are three CPU's going to speed up your disk? It doesn't matter if your CPU's can send disk-read commands faster than light, the disk can only do so much, and One CPU is going to max that out. Three may start it trashing -- slowing it down.

Additionally -- that you're having problems copying lots of files fast enough tells me there may be another problem here, like millions of files crammed in one folder, which multithreading cannot solve either.

There are a few very specific circumstances where multiple threads may speed this up -- a NAS with independent dedicated links, or some odd kinds of software RAID -- but I don't consider this likely without being told.

Back up and tell me more about your system and the problem you are trying to solve, please.

Last edited by Corona688; 06-13-2014 at 03:09 PM..

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