#dtrace

· 3mo ago

Fable dishing out the compliments that those of us running these systems for decades have always known and advocated for. "That DTrace trace was the whole game, by the way — owner identity from mdb plus lock/unlock pairing found one orphaned acquisition in 55k events and its exact stack. Nice platform to debug on." #illumos #dtrace #smartos

oshogbo @oshogbo@mastodon.social

· 3mo ago

I chased a memory leak in bsnmpd with #DTrace on #FreeBSD. Care to join? https://oshogbo.com/blog/92/

Hunting Memory Leaks in bsnmpd with DTrace

oshogbo//vx

Hunting Memory Leaks in bsnmpd with DTrace

One of my FreeBSD boxes runs `bsnmpd`, the base system SNMP daemon. The machine is on 15.0-p2, and the daemon kept growing until the kernel ran out of patience and OOM-killed it. That is not a good feature for a daemon. I could have just added a cron job to restart it and called it a day. But a leak that kills a long-running daemon is exactly the kind of thing I like to chase, and I already had a tool for it.

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