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RE: question about parallelism in cp command
From: |
Marc Roos |
Subject: |
RE: question about parallelism in cp command |
Date: |
Fri, 28 Jun 2019 13:52:46 +0200 |
There are always exceptions like with clustered filesystem etc etc. That
is why I wrote 'most used'. If you take all the issued 'cp' commands of
today in the world. I would bet 80%-95% of them would not benefit from
some sort of parallel processing.
-----Original Message-----
From: L A Walsh [mailto:address@hidden]
Sent: vrijdag 28 juni 2019 13:15
To: Marc Roos
Cc: aglo; coreutils
Subject: Re: question about parallelism in cp command
On 2019/06/06 09:25, Marc Roos wrote:
>
> Hmmm without being a maintainer. I would say cp -r is most used on
> single disk, so one thread is using the maximum disk iops taking y
> time to copy.
---
not exactly true, if the 1 disk as a 20 disk raid10.
You can target 10 areas at a time and get considerable benefit if they
are spread across multiple disks in the raid.