Re: Running concurrent txns and measuring the timings in Postgres

I got this thing running and hopefully works as expected. The txns are
stored in insert_txn1.sql, insert_txn2.sql, ...
Please let me know if you find any issues with this.
Script is attached.

On Wed, Jul 24, 2019 at 5:11 PM Adrian Klaver <adrian(dot)klaver(at)aklaver(dot)com>
wrote:

> On 7/24/19 1:52 PM, Souvik Bhattacherjee wrote:
> > >Well it depends on the part you have not filled in, what client(s) you
> > > are using and how the transactions are being generated?
> >
> > Using a psql client and txns are generated manually at this point. Each
> > txn is
> > stored separately in a .sql file and are fired from different psql
> > sessions, if that
> > helps.
> >
>
> A quick demo:
>
> psql -d production -U postgres -c "\timing" -c "select line_id, category
> from avail_headers order by line_id;"
>
> Timing is on.
> Time: 0.710 ms
>
> > On Wed, Jul 24, 2019 at 4:44 PM Adrian Klaver <adrian(dot)klaver(at)aklaver(dot)com
> > <mailto:adrian(dot)klaver(at)aklaver(dot)com>> wrote:
> >
> > On 7/24/19 1:42 PM, Souvik Bhattacherjee wrote:
> > > > The duplicate elimination is being handled by ON CONFLICT or
> > some custom
> > > > process in the code generating the transactions?
> > >
> > > Yes, we used ON CONFLICT for that. Thanks btw.
> > >
> > > > If the transactions are being created from a single app/script
> > could you
> > > > not just use 'timing' to mark the beginning of the
> > transactions and the
> > > > end and record that somewhere(db table and/or file)?
> > >
> > > So did you mean to say that I need to get the timestamps of the
> > > beginning/end
> > > of the txn since \timing only produces elapsed time? Surely that
> > would
> > > solve the
> > > problem but I'm not sure how to get that done in Postgres.
> > >
> > > I wanted to check to see if there are simpler ways to get this
> > done in
> > > Postgres
> > > before trying out something similar to Rob's suggestion or yours.
> > >
> >
> > Well it depends on the part you have not filled in, what client(s)
> you
> > are using and how the transactions are being generated?
> >
> >
> >
> > --
> > Adrian Klaver
> > adrian(dot)klaver(at)aklaver(dot)com <mailto:adrian(dot)klaver(at)aklaver(dot)com>
> >
>
>
> --
> Adrian Klaver
> adrian(dot)klaver(at)aklaver(dot)com
>