Re: pgbench -i progress output on terminal

Thanks for the review.

On Mon, Dec 2, 2019 at 3:28 PM Michael Paquier <michael@paquier.xyz> wrote:
> On Mon, Dec 02, 2019 at 02:30:47PM +0900, Amit Langote wrote:
> > On Sun, Dec 1, 2019 at 4:33 AM Fabien COELHO <coelho@cri.ensmp.fr> wrote:
> >> Patch applies, compiles, works for me. No further comments.
> >>
> >> I switched the patch as ready.
> >
> > Thanks a lot.
>
> An issue with the patch as proposed is that its style is different
> than what pg_rewind and pg_basebackup do in the same cases, but who
> cares :)

How about adding a function, say print_progress_to_stderr(const char
*fmt,...), exposed to the front-end utilities and use it from
everywhere? Needless to say that it will contain the check for whether
stderr points to terminal or a file and print accordingly.

> By the way, the first patch sent on this thread had a bug when
> redirecting the output of stderr to a log file because it was printing
> a newline for each loop done on naccounts, but you just want to print
> a log every 100 rows or 100k rows depending on if the quiet mode is
> used or not, so the log file grew in size with mostly empty lines.

Naive programming :(

> Another question I have is why doing only that for the data
> initialization phase?  Wouldn't it make sense to be consistent with
> the other tools having --progress and do the same dance in pgbench's
> printProgressReport()?

Considering Fabien's comment on this, we will have to check which
other instances are printing information that is not very useful to
look at line-by-line.

> NB: Note as well that pgindent complains for one thing, a newline
> before the call to isatty.

Fixed.

Attached v4.

Thanks,
Amit