From 9f820bd3eee287f9124a5c3e66296ec03105be9d Mon Sep 17 00:00:00 2001 From: Ralf Horstmann Date: Tue, 2 Oct 2018 10:21:30 +0200 Subject: [PATCH] Update cpu collector for OpenBSD 6.4 (#1094) Starting with (not yet released) OpenBSD 6.4, sysctl KERN_CPTIME2 will return ENODEV for offline CPUs. SMT siblings are reported as offline when hw.smt is disabled, which is the default since one of the later Spectre variants. So this might affect a few systems. For more details see: https://cvsweb.openbsd.org/src/sys/kern/kern_sysctl.c#rev1.348 Signed-off-by: Ralf Horstmann --- CHANGELOG.md | 1 + collector/cpu_openbsd.go | 6 ++++-- 2 files changed, 5 insertions(+), 2 deletions(-) diff --git a/CHANGELOG.md b/CHANGELOG.md index e02195fc..7c997430 100644 --- a/CHANGELOG.md +++ b/CHANGELOG.md @@ -24,6 +24,7 @@ Darwin meminfo metrics have been renamed to match Prometheus conventions. #1060 * [BUGFIX] Handle vanishing PIDs #1043 * [BUGFIX] Correctly cast Darwin memory info #1060 * [BUGFIX] Filter systemd units in Go for compatibility with older versions #1083 +* [BUGFIX] Update cpu collector for OpenBSD 6.4 ## 0.16.0 / 2018-05-15 diff --git a/collector/cpu_openbsd.go b/collector/cpu_openbsd.go index e9b102fe..996e50ec 100644 --- a/collector/cpu_openbsd.go +++ b/collector/cpu_openbsd.go @@ -59,10 +59,12 @@ func (c *cpuCollector) Update(ch chan<- prometheus.Metric) (err error) { var cp_time [][C.CPUSTATES]C.int64_t for i := 0; i < int(ncpus); i++ { cp_timeb, err := unix.SysctlRaw("kern.cp_time2", i) - if err != nil { + if err != nil && err != unix.ENODEV { return err } - cp_time = append(cp_time, *(*[C.CPUSTATES]C.int64_t)(unsafe.Pointer(&cp_timeb[0]))) + if err != unix.ENODEV { + cp_time = append(cp_time, *(*[C.CPUSTATES]C.int64_t)(unsafe.Pointer(&cp_timeb[0]))) + } } for cpu, time := range cp_time {