On 02/10/20 23:04 +0100, Jonathan Wakely wrote:
On 01/10/20 03:29 +0000, sotrdg sotrdg via Libstdc++ wrote:
From fb8d644a4c315058af141a3e84fcc083d665c8b9 Mon Sep 17 00:00:00 2001
From: ejsvifq_mabmip <euloa...@live.com>
Date: Wed, 30 Sep 2020 23:26:47 -0400
Subject: [PATCH] Fix a long term performance issue of fstream on Windows since
MSVCRT defines BUFSIZ as 512 which causes the serious downgrade of I/O
performance.
Even stdio itself is using 4096 as real buffer size, the behavior should be the
same as FILE* on Windows.
The attached patch seems a cleaner approach. Does it solve your
performance issues?
Pushed to trunk for GCC 11.
