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UID:pretalx-2026-JURFDY@events.eurobsdcon.org
DTSTART;TZID=CET:20260913T171500
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DESCRIPTION:Earlier this year I conducted a performance investigation and t
 uning of a slow backup job. Essentially\, a single rsync syncing a deeply 
 nested directory tree with thousands of files over the network onto a ZFS 
 dataset on a remote server.\n\nAfter a reboot of the remote server\, the b
 ackup would be received and saved on a local filesystem in about 10 minute
 s. Unfortunately\, as the uptime grew the rsync would run for days on end 
 instead of minutes. \n\nDuring the talk I will share with you how I figure
 d out where rsync's bottleneck was and what I did to make the syncing fini
 sh within the expected timeframe of 10 minutes. I will show you what tools
  I used during the investigation to discover what parts of the system are 
 screaming for help and to verify my hypothesis of where the root cause is.
 \n\nWe will explore tuning of caching on FreeBSD\, ZFS performance metrics
 \, and using DTrace to get a closer look at system's internals.\n\nThat's 
 all Folks!
DTSTAMP:20260715T130124Z
LOCATION:D.0.02
SUMMARY:Looney Tunes: FreeBSD\, rsync\, and ZFS - Mateusz Piotrowski
URL:https://events.eurobsdcon.org/2026/talk/JURFDY/
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