iopsystems/rezolus v5.29.0

on GitHub

Security

• rustls 0.23.46, for RUSTSEC-2026-0346 through 0349. Backported from 6.0
  (#1467) in #1479.
• rustls-webpki 0.103.16 and webpki-root-certs 1.0.10, for RUSTSEC-2026-0382
  and RUSTSEC-2026-0383. Backported from 6.0 (#1510) in #1511.

Added

• tcp_mib sampler: TCP counters the kernel keeps as SNMP MIBs, from the
  TcpExt section of /proc/net/netstat and the Tcp section of
  /proc/net/snmp. Delayed-ACK timer firings and deferrals, and duplicate
  data received; RTO expirations, tail loss probes and their recoveries,
  lost-segment retransmits by fast recovery or slow start, spurious RTOs,
  fast recoveries by SACK or Reno, retransmits lost again, D-SACKs received
  and sent by kind, and tcp_segments_retransmitted; zero-window transitions,
  withheld zero windows and zero-window drops; receive-queue prunes, prune
  failures, out-of-order prunes, collapsed buffers, backlog drops,
  receive-buffer drops, out-of-order queueing and TCP memory-pressure
  entries; autocorking; listen overflows and drops; aborts by reason; open
  failures, established resets, resets sent, input and checksum errors; and
  tcp_established_connections as a gauge. Columns are matched by name, so
  a column the kernel does not print leaves its metric absent. Enabled by
  default, like memory_vmstat. The viewer's Network section plots each
  metric under TCP when the recording has it. Backported from 6.0 (#1472) in #1478.
• Ubuntu 26.04 (resolute) packages, for amd64 and arm64, published to the
  ubuntu-resolute apt repository. (#1573)

Changed

• Debian and Ubuntu packages are published only to rezolus's own apt
  repositories (<distro>-<codename>), no longer also to the SystemsLab
  package registry. The systemslab-repo package (0.0.14 and later) lists
  rezolus's repositories. (#1573)

Fixed

• Viewer: a display-mode line chart asks for one bucket per 4 px of its
  width instead of one per pixel, so a long range is drawn in a quarter as
  many buckets, and their min/max envelope no longer fills the chart. A
  per-entity heatmap draws in one frame up to 60000 cells; it was drawn
  progressively above 3000, which cleared and repainted it over several
  frames on every live refresh. Per-entity heatmaps are still fetched at
  the recording's interval on 5.x. Backported from 6.0 (#1421, #1525) in
  #1528.
• Viewer: a decimated multi-series line chart draws continuous lines. Once a
  range holds more samples than the chart's point budget, each point was
  drawn as a short dash followed by a gap, and percentile uncertainty bands
  were not drawn, because the gap check compared buckets with the recording
  interval. It now uses the spacing between buckets, and decimated lines are
  drawn unstepped, like the single-series decimated median. The min/max
  envelope still spans a bucket that is actually missing (#1519). Backported
  from 6.0 (#1520) in #1521.
• cpu_perf: cgroup_cpu_cycles and cgroup_cpu_instructions no longer
  credit a failed counter read as a count. The sched_switch program read
  the counters with bpf_perf_event_read, which returns a negative errno
  in the same u64 as the count. When the counter group was off the PMU
  (-EBUSY), the next switch credited minus the counter's count since the
  agent opened it to one cgroup, so that cgroup's series went backwards or
  wrapped to near 2^64. On a CPU with no counter open (outside a partial
  reserved_pmu_counters grant, or where the group failed to open) the
  first switch lowered one cgroup's counter by 2. Counters are now read with
  bpf_perf_event_read_value; a failed read credits nothing, and the next
  good read sets a new baseline. Backported from 6.0 (#1477) in #1480.