Date: Sat, 02 Oct 2021 10:12:33 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=258863 Bug ID: 258863 Summary: "freebsd-update fetch" unnecessary IO when no updates [Fix provided] Product: Base System Version: Unspecified Hardware: Any OS: Any Status: New Severity: Affects Many People Priority: --- Component: bin Assignee: bugs@FreeBSD.org Reporter: email@example.com The IO trashing has likely been present in all versions of freebsd-update. I have a full description and code submitted the improvement against CURRENT here: https://github.com/freebsd/freebsd-src/pull/543 Copy of the description: When there are no updates available there is no need run through the the entirety of fetch_run () This introduces a simple check and its most significant benefit is avoiding the disk intensive phase of "fetch" (i.e. Inspecting system...) as there were no updates anyway. On IO bound hardware, in my case a Raspberry Pi 3, this improvement has reduced runtime duration of freebsd-update fetch from 1m20s down to 1.5s. Even on fast SSD hardware freebsd-update fetch currently takes ~15 seconds, this changes reduces the time to sub second. Again for emphasis: This is for the case when there are no updates. Check early and if the version matches, its done. I trust the github pull request has everything required, if not please let me know. -- You are receiving this mail because: You are the assignee for the bug.