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Date:      Fri, 18 Nov 2016 13:38:25 +0000
From:      bugzilla-noreply@freebsd.org
To:        gnome@FreeBSD.org
Subject:   [Bug 214338] devel/glib20: patch: new kqueue() backend for file monitoring
Message-ID:  <bug-214338-6497-jTv0Vfpf00@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-214338-6497@https.bugs.freebsd.org/bugzilla/>
References:  <bug-214338-6497@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D214338

--- Comment #3 from Vladimir Kondratyev <wulf@cicgroup.ru> ---
(In reply to rozhuk.im from comment #2)
> I use this patch mo than 10 days and all OK - no freezes, no high CPU usa=
ge.
> I think kernel cache files/dirs info for most cases.

No doubt, it should work nice in most desktop usages. But there are some wo=
rst
-case scenarios like:
1. Working over slow and unreliable media like mounted network shares
especially when public networks are used=20
2. Working with userspace filesystems under heavy CPU load and memory press=
ure
3. Working with large directories on medium-speed media like USB1/2-dongles

I have seen readdir()s lasting for more than minute in real life and it is
undesirable to see application stopped that time. I think you can avoid this
with using of some async io libraries like libeio but that just moves thread
creation from gio to external library.

I see more issues in your backend but this one is most important IMO

--=20
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