Thread: Data about rate of downloads
Hello, My name is Ilir Gashi and I am a PhD student at the Centre for Software Reliability, City University, London, UK. I was wondering if anyone can help me with the following question: - Are the numbers of downloads of a particular release of the PostgreSQL server recorded anywhere centrally, and if (at least approximatly) these numbers are known, can they be shared? We are interested on doing some research on how much the classical Software Reliability Growth models can be used for Reliability predictions of a server based on the bug reports for that server and the download rates. This work would form some part of my PhD thesis and, since we are an academic insitution, all the work and findings would be made available freely. Appologies if I have posted this question on the wrong list, in which case I would be very grateful for suggestions on where I should then post this question. Thanks in advance, Best regards, Ilir P.S. Just to clarify, we are purely interested on the numbers, not the identities of the 'downloaders'. -- ____________________________________________ Ilir Gashi PhD Student Centre for Software Reliability City University Northampton Square, London EC1V 0HB Tel: +44 20 7040 0273 Fax: +44 20 7040 8585 email: i.gashi@city.ac.uk website: http://www.csr.city.ac.uk/csr_city/staff/gashi/ ____________________________________________
I dont know the answer to your question, but I think that you forgot something....most linux distributions have postgresql included.....so, (I dont know the number) some people that use it, didnt download from postgresql site or mirrors... Ilir Gashi wrote: > Hello, > > My name is Ilir Gashi and I am a PhD student at the Centre for > Software Reliability, City University, London, UK. I was wondering if > anyone can help me with the following question: > > - Are the numbers of downloads of a particular release of the > PostgreSQL server recorded anywhere centrally, and if (at least > approximatly) these numbers are known, can they be shared? > > We are interested on doing some research on how much the classical > Software Reliability Growth models can be used for Reliability > predictions of a server based on the bug reports for that server and > the download rates. This work would form some part of my PhD thesis > and, since we are an academic insitution, all the work and findings > would be made available freely. > > Appologies if I have posted this question on the wrong list, in which > case I would be very grateful for suggestions on where I should then > post this question. > > Thanks in advance, > > Best regards, > > Ilir > > P.S. Just to clarify, we are purely interested on the numbers, not the > identities of the 'downloaders'.
On Tuesday 06 June 2006 19:29, Ilir Gashi wrote:
> Hello,
>
> My name is Ilir Gashi and I am a PhD student at the Centre for Software
> Reliability, City University, London, UK. I was wondering if anyone can
> help me with the following question:
>
> - Are the numbers of downloads of a particular release of the PostgreSQL
> server recorded anywhere centrally, and if (at least approximatly) these
> numbers are known, can they be shared?
>
We don't really track it thoroughly... looking at some numbers we've had ~
60,000 downloads of 8.1 since 8.1.4 was released... but that only people who
have gone through our main website... a lot of people get updates through
thier OS vendor (ports,apt-get,yum,etc...) and a fair number also go directly
into an ftp server or website.
> We are interested on doing some research on how much the classical Software
> Reliability Growth models can be used for Reliability predictions of a
> server based on the bug reports for that server and the download rates.
> This work would form some part of my PhD thesis and, since we are an
> academic insitution, all the work and findings would be made available
> freely.
>
I doubt they could for open source projects, unless those projects had very
tight control over thier distribution (which is kind of self defeating).
Smaller projects on places like pgfoundry might be able to track this (slony
comes to mind), but for us it seems doubtful.
--
Robert Treat
Build A Brighter Lamp :: Linux Apache {middleware} PostgreSQL
On Tue, Jun 06, 2006 at 09:05:30PM -0300, Rodrigo Gonzalez wrote: > I dont know the answer to your question, but I think that you forgot > something....most linux distributions have postgresql included.....so, > (I dont know the number) some people that use it, didnt download from > postgresql site or mirrors... Indeed. If you look at something like popcon for Debian [1], it'll tell you that out of 13211 submissions, 1442 say they are using postgresql-common. Back of the envelope calculation tells you that about 10% of Debian machines are using it, but then you're stuck with estimating how many Debian machines there are. On top of that there are lot of different versions, you have to determine what the number means. I myself have never downloaded a tarball from the mirrors. I've only ever used CVS and Debian distributed versions... [1] http://popcon.debian.org/ Have a nice day, -- Martijn van Oosterhout <kleptog@svana.org> http://svana.org/kleptog/ > From each according to his ability. To each according to his ability to litigate.