Date: Sun, 26 Jul 2020 23:31:12 +0300 From: Konstantin Belousov <kostikbel@gmail.com> To: Doug Hardie <bc979@lafn.org> Cc: List Mailing FreeBSD-STABLE <freebsd-stable@freebsd.org> Subject: Re: Laundry Message-ID: <20200726203112.GB2551@kib.kiev.ua> In-Reply-To: <E17A7D16-B285-4F70-87B9-9A101429025E@mail.sermon-archive.info> References: <E17A7D16-B285-4F70-87B9-9A101429025E@mail.sermon-archive.info>
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On Sun, Jul 26, 2020 at 01:11:33PM -0700, Doug Hardie wrote: > I have a production system (12.1-RELEASE-p6) that is showing around 1 GB of Laundry pages. There are over 6 Gb Inact and 1 Gb free. I can understand why the system would want to not prioritize laundering those pages as there is plenty of available pages. However, does that mean that I have about 1 GB of updated files that have not been written back to disk? If so, then there is a significant issue with power failures and loss of data. > Laundry keeps both file-backed (named) pages and swap-backed (anonymous) pages. Most likely it means that you have 1G of anonymous dirty mappings, for instance programs data/bss and malloced.
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