Subject: mfs read operations.
To: None <tech-kern@netbsd.org>
From: =?iso-8859-1?Q?P=E5l_Halvorsen?= <paalh@unik.no>
List: tech-kern
Date: 07/20/2001 13:41:45
Hi!

I'm reading data from a memory file system (mfs), due to bad performance
of my single-disk storage system, and when monitoring the
operations, it seems like the VOP_STRATEGY in bio_read() is not called.
However, getblk() is called. Why?
Should VOP_STRATEGY be called (is my counter wrong)?

How does the read operates on a mfs? Is the memory blocks containing
data only mapped into the buf structures, e.g., using UVM's page loanout
or map entry passing? 

-ph
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