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Conference azur::mcc

Title:	DECmcc user notes file. Does not replace IPMT.
Notice:	Use IPMT for problems. Newsletter location in note 6187
Moderator:	TAEC::BEROUD

Created:	Mon Aug 21 1989
Last Modified:	Wed Jun 04 1997
Last Successful Update:	Fri Jun 06 1997
Number of topics:	6497
Total number of notes:	27359

5919.0. "MCC, DECNET-OSI, Alarming, -> SRP allocation problem " by BONNET::STRATMAN (Peter Stratman @VBO) Fri Mar 25 1994 09:22

Hi,

Our MCC system runs on DECNET-OSI.

VMS V5.5-2
MCC V1.3
DECNET-OSI V5.6B

As soon as MCC alarming is activated, lots of SRPs are allocated (really
lots: 3 to 10 thousand a day) and are never released again.

Through SDA I saw that these SRP's were used for LOG (old format logical
name blocks) and contain something like :

(output from SDA)

SDA> format 820CD400

820CD400   LOG$L_LTFL                      00350008
820CD404   LOG$L_LTBL                      00000022
820CD408   LOG$W_SIZE                          0004
820CD40A   LOG$B_TYPE                        0B
820CD40B   LOG$B_TABLE                     00
820CD40C   LOG$W_GROUP                         0008
820CD40E   LOG$B_AMOD                        35
820CD40F                                   00
820CD410   LOG$L_MBXUCB                    00000000
           LOG$C_LENGTH

820CD414   LOG$T_NAME                      ".....CSMACD$ESA_8313C180."
 

Does this look like a known problem with DECNET OSI or DECMCC to anyone?

Thanks in advance for your help,
Peter.

(posted in DECNET-OSI and DECMCC notefiles)

T.R	Title	User	Personal Name	Date	Lines
5919.1	Known, escalated, waiting for a fix	BIKINI::KRAUSE	European NewProductEngineer for MCC	`Mon Mar 28 1994 05:40`	16
	>As soon as MCC alarming is activated, lots of SRPs are allocated (really >lots: 3 to 10 thousand a day) and are never released again. >Does this look like a known problem with DECNET OSI or DECMCC to anyone? Looks very familiar! It has something to do with frequently starting and stopping protocols on the Ethernet driver. The problem is seen with Alarms, because it causes frequent accesses (through AMs). BUT it can be reproduced without MCC (I can consume SRPs using DECelms, LTM and even UCX). We already escalated the problem and engineering is working on it. They narrowed it down to the common driver code, so it affects ALL Ethernet and FDDI drivers available for VMS! *Robert
5919.2	Only on DECnet/OSI ??	BONNET::STRATMAN	Peter Stratman @VBO	`Mon Mar 28 1994 06:34`	10
	Robert, Thanks for the info. Since we do roughly the same things on one MCC system running Phase IV (which is OK) and another MCC system which runs DECnet/OSI (and has the problem), my hypothesis was that the problem is specific to DECnet/OSI... Is this true ? Peter.
5919.3		BIKINI::KRAUSE	European NewProductEngineer for MCC	`Tue Mar 29 1994 07:22`	3
	> -< Only on DECnet/OSI ?? >- Yes.
5919.4	?	SUBURB::SMYTHI	Ian Smyth 830-3869	`Tue Sep 27 1994 11:50`	7
	Has a patch for this problem been released yet or is it fixed in the upcoming 1.4 ? regards, Ian
5919.5	MCC, DECNET-OSI, Alarming, -> SRP allocation problem patch	VF::LANGASQUE		`Wed Sep 28 1994 04:52`	9
	Hi, Yes, a patch was released and is avaliable on: TOUDON::MCC$PUBLIC:[DECMCC_V130_PATCHES.DECNET_OSI] Regards, Eric