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- Path: sparky!uunet!gatech!europa.asd.contel.com!emory!emory!not-for-mail
- From: unifi!goofy.unifi.com!bharat@uunet.UU.NET (Bharat Shah)
- Newsgroups: comp.databases.informix
- Subject: OnLine.USERS.parameter
- Date: 6 Jan 1993 14:13:05 -0500
- Organization: Mailing List Gateway
- Lines: 52
- Sender: walt@mathcs.emory.edu
- Distribution: world
- Message-ID: <1ifb01INNadf@emory.mathcs.emory.edu>
- Reply-To: unifi!goofy.unifi.com!bharat@uunet.UU.NET (Bharat Shah)
- NNTP-Posting-Host: emory.mathcs.emory.edu
- X-Informix-List-ID: <list.1752>
-
- Hi,
-
- We have been using SCO-OnLine since last three years and I have yet to figure
- out the **TRUE** meaning of the USERS shared memory parameter.
-
- USERS imply maximum number of users
-
- Page 2-28 of Informix OnLine Administrator's Guide,
- Database Server Version 4.00 states:
-
- " ..... Daemon and tape utilities count as users.
- Minimum number of users is given by the equation 4 + p + m
-
- where p is the number-of-page-cleaners
- m is 1 if you use disk mirroring and
- m is 0 if you are not using mirroring"
-
- My question goes if:
-
- p = 1 and m = 1 and
- I want five "people-users" (one each for isql, esql/c, forms, Wingz, Ace)
- to use the engine what should be my setting for USERS ?
-
- If your answer is 5 + daemon + (p=1) + (m=1) = 8 ... You are wrong !!
-
- On calling Informix Tech Support I was told that for five people user the
- setting should be (5 * 4) + p + m = 22 !!
-
- My license being for 16-users I was not sure if this was OK, so I called
- again to confirm USERS setting of 22 and queried some other Support
- engineer. He not only refused to confirm the setting but seemed upset at
- the previous engineer for giving me the **REAL** formula !!
-
- Some simple experiments showed that a value of 10 would suffice for my needs.
-
- MY GRIPE HERE IS WITH DOCUMENTATION and WITH INFORMIX TECH SUPPORT !!
-
- IF ONLINE REQUIRES MAX USERS SETTING WHY NOT DOCUMENT A FORMULA TO
- COMPUTE MAX ? WHY BOTHER TO GIVE A FORMULA FOR MINIMUM SETTING ?
-
- WHY NOT BE FORTHCOMING AND SAY THAT **USERS** SETTING IS THE NUMBER OF
- PROCESSES (This though could be found out by reading the tbconfig file which
- states that users = max number of concurrent processes). I guess I had better
- read all Informix provided scripts & files to to understand the product!
-
- Comments welcome.
-
- ========================================================================
- Bharat Shah Voice: (508)-663-7570
- Unifi Communications Corp. Fax: (508)-663-7543
- 4 Federal St, Billerica, Mass 01821 bharat@unifi.com
- ========================================================================
-