On Mon, Sep 29, 2008 at 02:55:52AM -0400, Greg Smith wrote: > On Mon, 29 Sep 2008, Matthew Pulis wrote: > >I need to perform some timed testing, thus need to make sure that > >disk cache does not affect me. Is clearing the OS (Ubuntu) disk > >cache, (by running: sudo echo 3 | sudo tee /proc/sys/vm/drop_caches) > >enough to do this? > > 3) sudo echo 3 > /proc/sys/vm/drop_caches
I'm not sure about the rest, but shouldn't this be: echo 3 | sudo tee /proc/sys/vm/drop_caches the OP's "sudo echo 3" seems redundant; "echo" doesn't need to be run with higher privileges, only the writing process needs that. As an aside, it would be nicer if there was a more appropriately program than tee but I've yet to find one. Sam -- Sent via pgsql-general mailing list (pgsql-general@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
