> You realize that it had to be turned on explicitly on IRIX, right? But
> don't let facts get in the way of a good rant...
On the contrary, with Irix 4 and earlier it was the default, but it caused so many problems that SGI switched the
defaultto OFF in IRIX 5. But because it had been available for so long, many important apps had come to rely on it, so
mostsites had to immediately re-enable virtual swap on every IRIX 5 server that came in. Admins just got used to doing
it,so it became a "default" at most sites, and admins often couldn't be convinced to disable it for database server
machines,because "That's our standard for IRIX configuration."
I worked at a big molecular modeling/visualization company; our visualization programs *required* virtual swap, and our
serverprograms *prohibited* virtual swap. Imagine how our sales people felt about that, telling customers that they'd
haveto buy two $30,000 machines just because of one kernel parameter. Of course, they didn't, and our server apps took
theheat as being "unreliable."
SGI called it "virtual swap" which I always thought was a hoot. You have virtual memory, which is really your swap
space,and then virtual swap, which is some kind of dark hole...
Craig
