Smarter write throttling
Smarter write throttling
Posted Aug 16, 2007 8:48 UTC (Thu) by edschofield (guest, #39993)Parent article: Smarter write throttling
Why wouldn't the I/O scheduler be a good place to perform write throttling?
Posted Aug 16, 2007 12:51 UTC (Thu)
by corbet (editor, #1)
[Link]
Because there is a gap between when a page is dirtied and when it gets to the I/O scheduler. Pages are not scheduled for writeback immediately upon dirtying - that's the page cache in action. So, by the time the I/O scheduler gets involved, it's too late to keep more pages from being dirtied.
I/O scheduler