From 20ff5f784c4f008e714619a879a193aa1de3e782 Mon Sep 17 00:00:00 2001 From: Neil Fortner Date: Wed, 23 Aug 2023 15:51:07 -0500 Subject: [PATCH 1/2] Add RELEASE.txt entry for compound performance regression fix (#3376) --- release_docs/RELEASE.txt | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/release_docs/RELEASE.txt b/release_docs/RELEASE.txt index 2772dd8aa61..0d9e89b6e15 100644 --- a/release_docs/RELEASE.txt +++ b/release_docs/RELEASE.txt @@ -292,6 +292,16 @@ Bug Fixes since HDF5-1.14.0 release =================================== Library ------- + - Fixed performance regression with some compount type conversions + + In-place type conversion was introduced for most use cases in 1.14.2. + While being able to use the read buffer for type conversion potentially + improves performance by performing the entire I/O at once, it also + disables the optimized compound type conversion used when the destination + is a subset of the source. Disabled in-place type conversion when using + this optimized conversion and there is no benefit in terms of the I/O + size. + - Fixed an assertion in a previous fix for CVE-2016-4332 An assert could fail when processing corrupt files that have invalid From 49205dcd9fb990ea18d25d2140ffe52a7a575e37 Mon Sep 17 00:00:00 2001 From: Neil Fortner Date: Wed, 23 Aug 2023 15:53:47 -0500 Subject: [PATCH 2/2] Fix spelling --- release_docs/RELEASE.txt | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/release_docs/RELEASE.txt b/release_docs/RELEASE.txt index 0d9e89b6e15..d817117810a 100644 --- a/release_docs/RELEASE.txt +++ b/release_docs/RELEASE.txt @@ -292,8 +292,8 @@ Bug Fixes since HDF5-1.14.0 release =================================== Library ------- - - Fixed performance regression with some compount type conversions - + - Fixed performance regression with some compound type conversions +33 In-place type conversion was introduced for most use cases in 1.14.2. While being able to use the read buffer for type conversion potentially improves performance by performing the entire I/O at once, it also