Are there any replacements for C-ISAM?

Posted in 1991

Walt Hultgren {rmy} — Thu, 24 Oct 91 21:00:06 -0400 — source: Informix-list mailing list archive (1991-1998)

Path: emory!wupost!spool.mu.edu!munnari.oz.au!comp.vuw.ac.nz!actrix!paul From: paul@actrix.gen.nz (Paul Gillingwater) Newsgroups: comp.databases.informix Keywords: Information Informix Summary Message-ID: <1991Oct24.231442.2702@actrix.gen.nz> Date: 24 Oct 91 23:14:42 GMT Organization: Actrix Information Exchange Does anyone know of any replacements for Informix C-ISAM, that are call-compatible with it, and that implement a better mechanism of locking than the **slow** semaphore operations that we see with the current versions? It seems that due to the way semaphores are implemented on some versions of UNIX, the system reponse time exponentially decays with large numbers of users. Remember that each semop is a system call -- wouldn't it be nice if there was a replacement for this mechanism that operates in user space? -- Paul Gillingwater, paul@actrix.gen.nz