On Wed, Feb 15, 2012 at 09:54:04AM +0100, Magnus Hagander wrote: > On Wed, Feb 15, 2012 at 02:23, Bruce Momjian <br...@momjian.us> wrote: > > On Wed, Feb 15, 2012 at 01:35:05AM +0200, Marko Kreen wrote: > >> On Tue, Feb 14, 2012 at 05:59:06PM -0500, Tom Lane wrote: > >> > Bruce Momjian <br...@momjian.us> writes: > >> > > On Mon, Feb 13, 2012 at 08:28:03PM -0500, Tom Lane wrote: > >> > >> +1, I was about to suggest the same thing. Running any of these tests > >> > >> for a fixed number of iterations will result in drastic degradation of > >> > >> accuracy as soon as the machine's behavior changes noticeably from > >> > >> what > >> > >> you were expecting. Run them for a fixed time period instead. Or > >> > >> maybe > >> > >> do a few, then check elapsed time and estimate a number of iterations > >> > >> to > >> > >> use, if you're worried about the cost of doing gettimeofday after each > >> > >> write. > >> > > >> > > Good idea, and it worked out very well. I changed the -o loops > >> > > parameter to -s seconds which calls alarm() after (default) 2 seconds, > >> > > and then once the operation completes, computes a duration per > >> > > operation. > >> > > >> > I was kind of wondering how portable alarm() is, and the answer > >> > according to the buildfarm is that it isn't. > >> > >> I'm using following simplistic alarm() implementation for win32: > >> > >> https://github.com/markokr/libusual/blob/master/usual/signal.c#L21 > >> > >> this works with fake sigaction()/SIGALARM hack below - to remember > >> function to call. > >> > >> Good enough for simple stats printing, and avoids win32-specific > >> code spreading around. > > > > Wow, I wasn't even aware this compiled in Win32; I thought it was > > ifdef'ed out. Anyway, I am looking at SetTimer as a way of making this > > work. (Me wonders if the GoGrid Windows images have compilers.) > > They don't, since most of the compilers people would ask for don't > allow that kind of redistribution.
Shame. > Ping me on im if you need one preconfigured, though... How do you do that? Also, once you create a Windows VM on a public cloud, how do you connect to it? SSH? -- Bruce Momjian <br...@momjian.us> http://momjian.us EnterpriseDB http://enterprisedb.com + It's impossible for everything to be true. + -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
