On 14/09/2011 09:30, Toby Corkindale wrote: > On 14/09/11 12:56, Andy Colson wrote: >> On 09/13/2011 08:15 PM, Toby Corkindale wrote: >>> Hi, >>> Some months ago, I ran some (probably naive) benchmarks looking at how >>> pgbench performed on an identical system with differing filesystems. >>> (on Linux). >>> > [snip] >> >> Did you test unplugging the power cable in the middle of a test to see >> which would come back up? > > Heh, no, but it'd be interesting to see.. > > I wonder if turning a virtual machine off has the same effect?
No, never the exact same effect. There are two things to consider: if/when/how the OS flushes the data to the hardware and if/when/how the hardware flushes the data to physical storage. You can simulate only the failure of the first part with a virtual machine, but not the second (unless you bring down the VM host...). -- Sent via pgsql-general mailing list (pgsql-general@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
