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Date: Sat, 26 Dec 2020 20:11:15 +0000
From: Eric Wong <e@80x24.org>
To: meta@public-inbox.org
Subject: Re: [PATCH] inboxidle: avoid needless syscalls on refresh
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Eric Wong <e@80x24.org> wrote:
> We don't have to replace a bunch of existing watches
> with identical new ones.  On Linux with Linux::Inotify2
> installed, this avoids a storm of inotify_add_watch(2)
> and inotify_rm_watch(2) syscalls on SIGHUP with -imapd
> and "-extindex --watch"

Addendum: this seems to fix missed wakeups after SIGHUP with
many (50K) inboxes, I'm not sure if there's some other threshold
that's missing or if there's a bug somewhere else...