Re: Too slow "Analyze" for the table with data in Thai language

On Wed, Jul 6, 2016 at 11:52 AM, Peter Geoghegan <pg@bowt.ie> wrote:
> On Tue, Jul 5, 2016 at 8:33 AM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
>> So ... why do you think this is a Postgres bug and not a glibc bug?
>> We have no control over what happens inside strcoll().
>
> I'd be interested in seeing exactly where time is spent by glibc.
> Perhaps Timur can use perf to show us a profile using the default perf
> event type:
>
> https://wiki.postgresql.org/wiki/Profiling_with_perf

I wonder if it is this bug:

https://sourceware.org/bugzilla/show_bug.cgi?id=18441

Some possibly relevant mailing list traffic that highlights Thai:

https://sourceware.org/ml/libc-alpha/2015-10/msg00149.html
https://sourceware.org/ml/libc-alpha/2016-03/msg00699.html

--
Thomas Munro
http://www.enterprisedb.com