[$] A FUSE implementation for famfs
The famfs filesystem is meant to provide a shared-memory
filesystem for large data sets that are accessed for computations by multiple
systems. It was developed by John Groves, who led a combined filesystem and
memory-management session at the 2025 Linux Storage, Filesystem, Memory
Management, and BPF Summit (LSFMM+BPF) to discuss it. The session was a follow-
up to the famfs session at last year's summit, but it was also meant to discuss
whether the kernel's direct-access (DAX) mechanism, which is used by famfs,
could be replaced in the filesystem by using other kernel features.
Security updates for Thursday
Security updates have been issued by Debian (chromium,
libapache2-mod-auth-openidc, mariadb-10.5, and openssh), Red Hat (osbuild-
composer), Slackware (mariadb), SUSE (apache2-mod_auth_openidc, glib2,
ImageMagick, libsoup, libsoup2, libva, openvpn, sqlite3, and weblate), and
Ubuntu (libsoup3, php-horde-css-parser, and python-django).
Fittl: Waiting for Postgres 18: Accelerating Disk Reads with Asynchronous I/O
Lukas Fittl writes in detail on the pganalyze blog about
the asynchronous I/O capability coming with the PostgreSQL 18 release.
Asynchronous I/O delivers the most noticeable gains in cloud environments
where storage is network-attached, such as Amazon EBS volumes. In these
setups, individual disk reads often take multiple milliseconds, introducing
substantial latency compared to local SSDs.
With traditional
synchronous I/O, each of these reads blocks query execution until the data
arrives, leading to idle CPU time and degraded throughput. By contrast,
asynchronous I/O allows Postgres to issue multiple read requests in
parallel and continue processing while waiting for results. This reduces
query latency and enables much more efficient use of available I/O
bandwidth and CPU cycles.
[$] LWN.net Weekly Edition for May 8, 2025
Inside this week's LWN.net Weekly Edition:
Front: Debian and essential packages; Custom BPF OOM killers; Speculation
barriers for BPF programs; More LSFMM+BPF 2025 coverage.
Briefs:
Deepin on openSUSE; AUTOSEL; Mission Center 1.0.0; OASIS ODF; Redis license;
USENIX ATC; Quotes; ...
Announcements: Newsletters, conferences,
security updates, patches, and more.
Home Assistant 2025.5 released
Version 2025.5 of the Home Assistant home automation system
has been released.
With this release, the project is celebrating
two million active installations. Changes include improvements to the
backup system, Z-Wave Long Range support, a number of new integrations, and
more.