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what is ioflush (syncer)?
- To: tech_(_at_)_openbsd_(_dot_)_org
- Subject: what is ioflush (syncer)?
- From: "Jeremy C. Reed" <reed_(_at_)_reedmedia_(_dot_)_net>
- Date: Wed, 10 Jan 2001 12:33:18 -0800 (PST)
I am trying to research about special system processes to write a
non-technical, generic BSD article.
I have a few questions about ioflush (the System filesystem synchronizer
If I understand correctly, ioflush helps flush internal disk write caches
(maybe every thirty seconds?).
What are "dirty" buffers?
What is the syncer work queue? What is the syncer work-list?
Why is it named "ioflush"?
What does it have to do with file system unmount?
How is it related to softdeps?
On a related note, are there any special system processes other than the
swapper, pagedaemon, reaper and ioflush?
Where is this well documented?
Jeremy C. Reed
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