CentOS - Jun 2019 - Delta RPMs (drpms) for CentOS-6 and CentOS-7

We are having issues with drpms on CentOS-6 i386 and x86_64 and on
CentOS-7 x86_64.

The technical issues sometimes cause us to have to rebuild all drpms
over again .. and the time involved is very large.? Also storing the
drpms and moving them around takes up a lot of space and bandwidth.

We would like to remove delta rpms (drpms) from our CentOS-6 and
CentOS-7 repositories.

But before we do , we would like a discussion on these lists to ensure
this is not going to cause people major issues.

So, begin the discussion, and we will address this again in about a
month.? And we'll see where it leads.

Thanks,
Johnny Hughes

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On Tue, Jun 04, 2019 at 09:55:14AM -0500, Johnny Hughes
wrote:
> We are having issues with drpms on CentOS-6 i386 and x86_64 and on
> CentOS-7 x86_64.
> 
> The technical issues sometimes cause us to have to rebuild all drpms
> over again .. and the time involved is very large.? Also storing the
> drpms and moving them around takes up a lot of space and bandwidth.
> 
> We would like to remove delta rpms (drpms) from our CentOS-6 and
> CentOS-7 repositories.
> 
> But before we do , we would like a discussion on these lists to ensure
> this is not going to cause people major issues.
> 
> So, begin the discussion, and we will address this again in about a
> month.? And we'll see where it leads.
> 
> Thanks,
> Johnny Hughes
> 
Johnny:

I don't have any particular problems with drpms, but I note that
on my laptop, which is a really dog-slow dual-core Atom maxed out
with a whopping 2Gig of RAM, the drpms seems to take forever to
finish the rebuild. I suspect for me it'd be faster to just download
the full RPM.

Fred

-- 
---- Fred Smith -- fredex at fcshome.stoneham.ma.us
-----------------------------
                        The Lord is like a strong tower. 
             Those who do what is right can run to him for safety.
--------------------------- Proverbs 18:10 (niv) -----------------------------

Hi Johnny

for my installation, drpms do not provide any advantage, so if you see 
any advantage in discontinuing to include them, just do so.

suomi

On 04/06/2019 16.55, Johnny Hughes wrote:
> We are having issues with drpms on CentOS-6 i386 and x86_64 and on
> CentOS-7 x86_64.
> 
> The technical issues sometimes cause us to have to rebuild all drpms
> over again .. and the time involved is very large.? Also storing the
> drpms and moving them around takes up a lot of space and bandwidth.
> 
> We would like to remove delta rpms (drpms) from our CentOS-6 and
> CentOS-7 repositories.
> 
> But before we do , we would like a discussion on these lists to ensure
> this is not going to cause people major issues.
> 
> So, begin the discussion, and we will address this again in about a
> month.? And we'll see where it leads.
> 
> Thanks,
> Johnny Hughes
> 
> 
> _______________________________________________
> CentOS mailing list
> CentOS at centos.org
> https://lists.centos.org/mailman/listinfo/centos
>

On Tue, 4 Jun 2019, Johnny Hughes wrote:
> We would like to remove delta rpms (drpms) from our CentOS-6 and
> CentOS-7 repositories.
>
> But before we do , we would like a discussion
Delta's are about conserving network bandwidth at the expense of local 
disk bandwidth, so I expect the greatest effect is for your mirror 
network.  So far as I'm concerned they could disappear and I'd never 
really notice.


/mark

On Tue, 2019-06-04 at 09:55 -0500, Johnny Hughes wrote:
> We would like to remove delta rpms (drpms) from our CentOS-6 and
> CentOS-7 repositories.
I maintain a local mirror for CentOS and we don't use delta rpms so
won't mind if they're dropped.  

(From what I've seen with Fedora, the benefits are minimal anyway.)


-- 
Ian

> We would like to remove delta rpms (drpms) from our CentOS-6 and
> CentOS-7 repositories.
> 
I live on fast connections both at home and work and for me I see no
real advantage to delta RPMs - I've not really measured it, but it
seems like my systems spend more time reconstructing the RPMs than they
ever did downloading things. So it is of no consequence to *me* if they
are done away with.

TBH I think the people you really need to hear from are those for whom
delta RPMs are an distinct advantage - they are the ones who will be
affected.  So far I've only seen responses from people who don't mind
if they are abandoned.

P.

On Thu, Jun 06, 2019 at 09:06:42AM +0100, Pete Biggs
wrote:
> 
> > We would like to remove delta rpms (drpms) from our CentOS-6 and
> > CentOS-7 repositories.
> > 
> 
> I live on fast connections both at home and work and for me I see no
> real advantage to delta RPMs - I've not really measured it, but it
> seems like my systems spend more time reconstructing the RPMs than they
> ever did downloading things. So it is of no consequence to *me* if they
> are done away with.
> 
That is also my situation, DRPMs take more time than downloading.

jl
-- 
Jon H. LaBadie                 jcu at labadie.us
 11226 South Shore Rd.          (703) 787-0688 (H)
 Reston, VA  20190              (703) 935-6720 (C)