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From: Tom Lane <tgl@sss.pgh.pa.us>
To: ldh@laurent-hasson.com <ldh@laurent-hasson.com>
Cc: Justin Pryzby <pryzby@telsasoft.com>
Cc: Ranier Vilela <ranier.vf@gmail.com>
Cc: pgsql-performance@postgresql.org <pgsql-performance@postgresql.org>
Subject: Re: Big Performance drop of Exceptions in UDFs between V11.2 and 13.4
Date: Sun, 22 Aug 2021 16:11:25 -0400
Message-ID: <38107.1629663085@sss.pgh.pa.us> (raw)
In-Reply-To: <MN2PR15MB256016A7233E15D049F1FDB885C39@MN2PR15MB2560.namprd15.prod.outlook.com>
References: <MN2PR15MB2560AE2A878FBBE88DCFF33385C29@MN2PR15MB2560.namprd15.prod.outlook.com>
	<2092859.1629558281@sss.pgh.pa.us>
	<MN2PR15MB25607BDC72A325CA9B9D3E3385C29@MN2PR15MB2560.namprd15.prod.outlook.com>
	<2136207.1629569846@sss.pgh.pa.us>
	<20210821191950.GW10479@telsasoft.com>
	<MN2PR15MB2560ED2A8F967B14E7D7881E85C29@MN2PR15MB2560.namprd15.prod.outlook.com>
	<20210821221729.GY10479@telsasoft.com>
	<MN2PR15MB2560FB03666CEABB651FB32185C29@MN2PR15MB2560.namprd15.prod.outlook.com>
	<MN2PR15MB256034533A31A7C11E3C347985C39@MN2PR15MB2560.namprd15.prod.outlook.com>
	<CAEudQAocYZieAMgCtXa8Oau8=dVJ1_R1r0coLeF1LfiYkBCTNA@mail.gmail.com>
	<20210822154758.GZ10479@telsasoft.com>
	<30496.1629654632@sss.pgh.pa.us>
	<MN2PR15MB2560C3FF951319B18A3CA83585C39@MN2PR15MB2560.namprd15.prod.outlook.com>
	<MN2PR15MB25601CCA9E337403E1754BDE85C39@MN2PR15MB2560.namprd15.prod.outlook.com>
	<35729.1629660223@sss.pgh.pa.us>
	<MN2PR15MB2560634E97465D56FFB4601D85C39@MN2PR15MB2560.namprd15.prod.outlook.com>
	<MN2PR1! 5MB256016A7233E15D049F1FDB885C39@MN2PR15MB2560.namprd15.prod.outlook.com>

"ldh@laurent-hasson.com" <ldh@laurent-hasson.com> writes:
> I do have a Linux install of 13.3, and things work beautifully, so this is definitely a Windows thing here that started in V12.

It's good to have a box around it, but that's still a pretty large
box :-(.

I'm hoping that one of our Windows-using developers will see if
they can reproduce this, and if so, try to bisect where it started.
Not sure how to make further progress without that.

			regards, tom lane





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