I used Joseph Koech's approach since it seemed simple and I was lazy, and with the help of a friend still in school, we came up with the following calculation: PS, I converted 6.3GB into MBs by multiplying by 1024 50x + 40y = 6451.2 100x + 90y = ? Increase x and y by 50 each 50*(x + 50) + 40*(y + 50) = ? Expand the brackets 50x + 2500 + 40y + 2000 = ? We know that 50x + 40y = 6451.2 6451.2 + 2500 + 2000 = 10951.2 50x + 40y = 6300 100x + 90y = 10951.2 Answer = (10951.2)/1024 *10.69GB* Whether that is mathematically correct or not, I really don't know, but it sure looks accurately'ish so I am happy, for now. On Mon, Aug 17, 2015 at 9:14 AM, Peter Karunyu <pkarunyu@gmail.com> wrote:
@Joseph Koech, thanks for reminding me that I should have paid more attention to maths class in high school :-)
On Sun, Aug 16, 2015 at 8:05 PM, Joseph Koech <josephkoech.dev@gmail.com> wrote:
60x + 40y = 6.3 100x + 90y = ? On 15 Aug 2015 5:49 pm, "Peter Karunyu via skunkworks" < skunkworks@lists.my.co.ke> wrote:
Thanks everyone, I have been schooled now.
On Fri, Aug 14, 2015 at 4:57 PM, John K. via skunkworks < skunkworks@lists.my.co.ke> wrote:
If your system doesn't have many tables you can do some quick math based on the no. of rows in each table for each type (student or teacher). Most systems will show you how much space a table is occupying and the no. of rows in each, once you know the avg. no. of rows (and their size) per user, you can then extrapolate from there. You can even project how it'll be in the future if you can get the avg. no of rows created per user per day/month.
Regards, John K.
On 14 August 2015 at 15:28, Raymond Rono via skunkworks < skunkworks@lists.my.co.ke> wrote:
I believe you can be able to estimate the ratio of data usage between users (user here to mean others who are not students?) and students (say 3:2). From there map it to a simultaneous equation and solve it.
On Fri, Aug 14, 2015 at 11:33 AM, geoffrey gitagia via skunkworks < skunkworks@lists.my.co.ke> wrote:
well the first thing you should work out is archiving and how your system sorts this out , then fully optimize the systems to be able to work optimally , being a learning system (assumption) most of the data will stop growing since all that is changing is statuses , so your archive should be able to move students who have left and their data so that each year you're working only required data no reference data .
Else for estimating this is what you need
How many transactions does a student create in the system per month e.g. how many cats , assignment uploads , finall exams etc
How much class work does the teacher upload every month/term (does this change and is it different per teacher in the same subject)
the above will guide you to estimate that by the end of 1 yr 200 student transactions and 100 teachers transactions will have pushed data worth X Mbs
On Fri, Aug 14, 2015 at 11:20 AM, Jangita via skunkworks < skunkworks@lists.my.co.ke> wrote:
> Seems like a math direct proportion question from primary school :) > > Anyway, is the 6.3GB ONLY the database data students and users? Or > does it contain the operating system and supporting software (apache > python, mysql binaries etc). To estimate space, I normally let the product > run for several months and check daily/monthly usage. You might find that > in April/August (school holidays) the data doesn't expand that much. > > If your DB is structured correctly, space usage should be inversely > exponential for a selected client base (master tables) from what I've seen > of transactional systems (telecoms and banks) > > If I were you, I'd watch for some time,graph then estimate > > Centi zangu mbili > ᐧ > > On 14 August 2015 at 09:20, Peter Karunyu via skunkworks < > skunkworks@lists.my.co.ke> wrote: > >> Dear members, >> I am trying to estimate the projected hard disk space usage by a >> web app; assuming the said web app is a school software; >> >> *If 60 students and 40 users are using 6.3 GB of hard disk space, >> how many GBs will 100 students and 90 users use?* >> >> Or is there a better way to estimate growth? >> >> I am particularly at pains because students and users do not >> produce the same amount of data, therefore, I cant do 60+40 and use that. >> On the other hand, if I calculate for students kando and users kando, >> somehow that feels wrong because they will both use the same, well, hard >> disk... >> >> _______________________________________________ >> skunkworks mailing list >> skunkworks@lists.my.co.ke >> ------------ >> List info, subscribe/unsubscribe >> http://lists.my.co.ke/cgi-bin/mailman/listinfo/skunkworks >> ------------ >> >> Skunkworks Rules >> http://my.co.ke/phpbb/viewtopic.php?f=24&t=94 >> ------------ >> Other services @ http://my.co.ke >> > > > _______________________________________________ > skunkworks mailing list > skunkworks@lists.my.co.ke > ------------ > List info, subscribe/unsubscribe > http://lists.my.co.ke/cgi-bin/mailman/listinfo/skunkworks > ------------ > > Skunkworks Rules > http://my.co.ke/phpbb/viewtopic.php?f=24&t=94 > ------------ > Other services @ http://my.co.ke >
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