Laundry

Konstantin Belousov
Sun, 26 Jul 2020 20:31:12 -0000

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.