[nsd-users] NSD 4.10.0 released

[Wouter Wijngaards]

Hi,

NSD 4.10.0 is available:
https://nlnetlabs.nl/downloads/nsd/nsd-4.10.0.tar.gz
sha256 6317d7f5e3f01c33912f313d66a33dd1ace1cdf7f19d5c590b2e430d8ca4605f
pgp https://nlnetlabs.nl/downloads/nsd/nsd-4.10.0.tar.gz.asc

Version 4.10.0 integrates simdzone and drops the Flex+Bison zone
parser.

NSD used a Flex+Bison based zone parser since version 1.4.0. The parser
served NSD well, but zones have increased in size and zone loading
performance has been problematic for some users.

With the integration of simdzone
(https://github.com/NLnetLabs/simdzone),
performance of loading zones and IXFRs is drastically improved. Quick
measurements show improvements ranging anywhere from 3.8x to 1.6x,
depending on zone size and database type, though the improvements will
be less noticable for NSEC3 zones due to pre-hashing.

simdzone leverages SIMD instructions in modern CPUs to improve
throughput. Right now SSE4.2 and AVX2 instruction sets are supported,
other instruction sets will use the fallback implementation, which
still is a decent improvement over the Flex+Bison based parser.

The release has additional fixes from the release candidate. The
parse of lowercase type names is fixed and the x86_64 variable is
set to no for other machines.

4.10.0
================
FEATURES:
- Merge #278: Replace Flex+Bison based zone parser with simdzone.
    Performance of loading zones and IXFRs is greatly improved by using
    the simdzone project by NLnet Labs. The optimized presentation
    format parser leverages SIMD instructions in modern CPUs to improve
    throughput. Right now SSE4.2 and AVX2 instruction sets are
    supported, other instruction sets will use the fallback
    implementation, which still is a decent improvement over the
    Flex+Bison based parser.

BUG FIXES:
- Fix that when the server truncates the pidfile, it does not follow
    symbolic links.
- Fix #317: nsd should not chown its PID file.
- For #317: Modify nsd service script to stop NSD from creating a pid
    file that systemd is not using.
- Fix #324: Clarify the purpose of contrib/bug390.patch.
- Fix IXFR requests upstream for zones with a long name. Thanks for the
    report to Yuuki Wakisaka from Internet Initiative Japan Inc.
- Unit test for dname subdomain test used by xfrd-tcp.c.
- Fix #329: TCP accept queues number.
- Fix that the reload handler for sigchild uses signal_add, and also
    that the signal handler is restored when done.
- Fix that when server verify is done it resets the sigchild handler.
- Fix makedist.sh for simdzone inclusion.
- Fix makedist.sh to remove simdzone git tracking information and
    scripting temporaries from tarball.
- Fix error output of makedist.sh.
- Use simdzone version with name parser fix.
- Bump simdzone version to fix OpenBSD build issues.
- Bump simdzone to include minor fixes.

Best regards, Wouter