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Informix - Problem description

Problem IT43294 Status: Closed

INCREASE IN GLOBAL MEMORY POOL USAGE WHEN RECEIVING MANY FRAGMENTED
NETWORK DATA PACKETS

product:
INFORMIX SERVER / 5725A3900 / C10 - IDS 12.10
Problem description:
The communication protocol used by the Informix client and
server may involve a sequence of transferring many packets of
data from the client to the server. An example would be the
insert or update of large blob or character columns. Data is
sent by the client in packets of, for example, 1k or 4k bytes
but the size of each packet read by the Informix server may not
match. The amount of data received in each read call may vary
depending on the host server load or network characteristics and
may vary from a few bytes to multiple kb. The data returned by
each read call is stored in its own fixed size buffer with the
result that many such buffers  may be required.

The memory for the network data buffers is allocated from the
global memory pool. This pool is not automatically drained and
may become fragmented over time leading to more shared memory
being required in order to accommodate requests for the
relatively large network buffers.
Problem Summary:
****************************************************************
* USERS AFFECTED:                                              *
* Users of Informix Server prior to 12.10.xC16 and 14.10.xC11. *
****************************************************************
* PROBLEM DESCRIPTION:                                         *
* See Error Description                                        *
****************************************************************
* RECOMMENDATION:                                              *
* Upgrade to Informix Server 12.10.xC16 or 14.10.xC11 (when    *
* available).                                                  *
****************************************************************
Local Fix:
Solution
Workaround
****************************************************************
* USERS AFFECTED:                                              *
* Users of Informix Server prior to 12.10.xC16 and 14.10.xC11. *
****************************************************************
* PROBLEM DESCRIPTION:                                         *
* See Error Description                                        *
****************************************************************
* RECOMMENDATION:                                              *
* Upgrade to Informix Server 12.10.xC16 or 14.10.xC11 (when    *
* available).                                                  *
****************************************************************
Comment
Fixed in Informix Server 12.10.xC16 and 14.10.xC11.
Timestamps
Date  - problem reported    :
Date  - problem closed      :
Date  - last modified       :
07.03.2023
18.05.2023
18.05.2023
Problem solved at the following versions (IBM BugInfos)
Problem solved according to the fixlist(s) of the following version(s)