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- Newsgroups: comp.databases.informix
- Path: sparky!uunet!caen!zaphod.mps.ohio-state.edu!magnus.acs.ohio-state.edu!mtrotter
- From: trotter.1@osu.edu (Mark Trotter)
- Subject: re: out-of-control /tmp files
- Message-ID: <1992Nov10.194403.26029@magnus.acs.ohio-state.edu>
- Originator: mtrotter@bottom.magnus.acs.ohio-state.edu
- Sender: news@magnus.acs.ohio-state.edu
- Nntp-Posting-Host: bottom.magnus.acs.ohio-state.edu
- Organization: The Ohio State University
- Date: Tue, 10 Nov 1992 19:44:03 GMT
- Lines: 30
-
- Mark L Trotter writes:
- > I'm now using the latest and greatest version of Informix, 4GL 4.1 and
- >OnLine 5.0, and the sort package has me miffed. When I perform a select
- >that contains a UNIQUE or ORDER BY, this thing cranks up a temporary file
- >in my /tmp directory of my file system. The problem is I have only a
- >little bit of file space left, but my raw Informix drive has over 200mb
- >sitting empty! How can I convince it to use the raw device? And why
- >are we converting back to using the OS, and it's overhead, to manipulate
- >data instead of the OnLine engine using the raw device?
- >BTW, I'm on an HP9000/832 and HPUX 8.0
-
- David Kosenko writes (from Informix):
- > You cannot "convince" the server to use raw space (dbspace space, actually)
- > for sorts. The "new" sort package was designed to perform parallel
- > sorting on SMP machines. This requires having different drives available
- > for i/o when psorting is used. It was decided that the best approach to
- > this was to use Unix files for the sorting process (generally only used
- > for larger sorts).
-
- And I reply:
- I don't have a SMP machine. I will take a stab at guessing that most of the
- machines running Informix are not SMP machines. Using the file system for
- data storage seems to be a step backwards on my machine, especially for
- "larger sorts". I don't have the room, and don't want the overhead. How
- can I get sorting back in the dbspace where it belongs?
-
- !------------------------------------------------------------------------!
- ! Mark Trotter @ The Ohio State University Graduate School !
- ! voice 614/292-6031 FAX 614/292-3656 BITNET trotter.1@osu.edu !
- !------------------------------------------------------------------------!
-