Re: Open_files drops fast. Why?

[Dan Nelson]

In the last episode (Apr 02), Mike South said:
> In load testing I noticed that, even though all the queries in the
> tests are for the exact same tables, at some point in the test
> the Open_files variable  (from SHOW STATUS) drops very quickly.  Does 
> anyone have any idea what would cause that?  

Each thread opens its own filedescriptors for the tables it uses.  10
threads accessing 4 tables uses (10 threads * (4 table files + 4 index
files)) = 80 fds; 100 threads uses 800.

-- 
	Dan Nelson
	dnelson@stripped