rpm in background

[Patrick Dupre]

Hello,

This task used to run very often on my machine and makes every slow.
How can I manage it?

rpm -q -a --queryformat %{NAME}\n%{VERSION}-%{RELEASE}\n%{EPOCH}\n%{GROUP}\n%{SUMMARY}\n\n

Thank.

===========================================================================
 Patrick DUPRÉ                                 | | email: [e-mail]
 Laboratoire de Physico-Chimie de l'Atmosphère | |
 Université du Littoral-Côte d'Opale           | |
 Tel.  (33)-(0)3 28 23 76 12                   | | Fax: [phone]
 189A, avenue Maurice Schumann                 | | 59140 Dunkerque, France
===========================================================================

[Luigi Votta]

On Sun, 30 Aug 2015 14:13:49 +0200
"Patrick Dupre"  wrote:
> Hello,
>
> This task used to run very often on my machine and makes every slow.
> How can I manage it?
>
> rpm -q -a --queryformat
> %{NAME}\n%{VERSION}-%{RELEASE}\n%{EPOCH}\n%{GROUP}\n%{SUMMARY}\n\n
>
> Thank.

Redirecting to a file in bkground?

rpm -q -a --queryformat
%{NAME}\n%{VERSION}-%{RELEASE}\n%{EPOCH}\n%{GROUP}\n%{SUMMARY}\n\n >
all_packgs.txt

[Luigi Votta]

On Sun, 30 Aug 2015 14:25:02 +0200
Luigi Votta  wrote:
> On Sun, 30 Aug 2015 14:13:49 +0200
> "Patrick Dupre"  wrote:
> > Hello,
> >
> > This task used to run very often on my machine and makes every slow.
> > How can I manage it?
> >
> > rpm -q -a --queryformat
> > %{NAME}\n%{VERSION}-%{RELEASE}\n%{EPOCH}\n%{GROUP}\n%{SUMMARY}\n\n
> >
> > Thank.
>
> Redirecting to a file in bkground?
>
> rpm -q -a --queryformat
> %{NAME}\n%{VERSION}-%{RELEASE}\n%{EPOCH}\n%{GROUP}\n%{SUMMARY}\n\n >
> all_packgs.txt

Sorry i missed & at the end:
rpm -q -a --queryformat
%{NAME}\n%{VERSION}-%{RELEASE}\n%{EPOCH}\n%{GROUP}\n%{SUMMARY}\n\n >
all_packgs.txt &

[Gordon Messmer]

On 08/30/2015 05:13 AM, Patrick Dupre wrote:
> This task used to run very often on my machine and makes every slow.
> How can I manage it?
>
> rpm -q -a --queryformat %{NAME}\n%{VERSION}-%{RELEASE}\n%{EPOCH}\n%{GROUP}\n%{SUMMARY}\n\n

If you're asking how to avoid slowing down everything else, use "nice".

nice rpm -q -a ...

The nice process will run with a lower priority than other processes.

[Matthew Miller]

On Sun, Aug 30, 2015 at 02:13:49PM +0200, Patrick Dupre wrote:
> Hello,
> This task used to run very often on my machine and makes every slow.
> How can I manage it?
> rpm -q -a --queryformat %{NAME}\n%{VERSION}-%{RELEASE}\n%{EPOCH}\n%{GROUP}\n%{SUMMARY}\n\n

Why does it run very often on your machine?

In any case, you can speed it up by an order of magnitude by adding
`--nodigest --nosignature`, like this:

$ time rpm -qa > /dev/null
    real	0m1.462s
    user	0m1.390s
    sys 	0m0.042s

$ time rpm --nodigest --nosignature -qa > /dev/null

real	0m0.152s
    user	0m0.094s
    sys 	0m0.058s