IDS Forum

oninit process consumes memory

Posted By: Kerhalkar, Rohit
Date: Wednesday, 25 February 2004, at 6:36 a.m.

We are using Informix Dynamic Server 9.4 on HPUX11i. We have observed =
that the memory consumed by oninit process steadily increases over a =
period of time. We find that there is no apparent memory leakage in our =
application that processes data in the database. Even if we shutdown all =
the application processes, the oninit process does not release the =
memory. Executing 'onmode -F' also does not help.
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Most of our applications are written in ESQL/C and Java1.4 language. The =
Java uses JDBC 2.0 connection whereas ESQL/C uses shared memory to =
connect to database.
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The HPUX11i is a 3CPU rp5470 HP-UX box with 3 GB RAM with 10 GB Swap =
Space.
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Can anybody give any hint as why the oninit memory is increasing =
foreever and how to force it to release it.
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Following is the output of top command on HP-UX with oninit process =
highlighted.
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#########################################################################=
#
System: rp5470 Mon Feb 23 16:11:36 2004

Load averages: 0.35, 0.37, 0.38

270 processes: 250 sleeping, 20 running

Cpu states:

CPU LOAD USER NICE SYS IDLE BLOCK SWAIT INTR SSYS

0 0.62 56.9% 0.0% 0.6% 42.5% 0.0% 0.0% 0.0% 0.0%=20

1 0.18 24.0% 0.0% 0.4% 75.6% 0.0% 0.0% 0.0% 0.0%=20

2 0.26 31.9% 0.0% 13.8% 54.3% 0.0% 0.0% 0.0% 0.0%=20

--- ---- ----- ----- ----- ----- ----- ----- ----- -----

avg 0.35 37.6% 0.0% 4.8% 57.6% 0.0% 0.0% 0.0% 0.0%=20

Memory: 1517120K (1361396K) real, 3105448K (2502008K) virtual, 75520K =
free Page# 1/1

CPU TTY PID USERNAME PRI NI SIZE RES STATE TIME %WCPU %CPU COMMAND

0 ? 24470 informix 180 20 1275M 576K run 6245:42 52.95 52.86 oninit

2 ? 24472 informix 180 20 1275M 576K sleep 8078:08 47.53 47.45 oninit

2 ? 28173 root 152 20 267M 75864K run 254:05 3.43 3.42 java

0 pts/tc 404 root 152 20 314M 125M run 1838:53 2.70 2.69 java

0 pts/tc 12059 root 152 20 245M 78628K run 185:06 1.33 1.33 java

1 ? 2377 root 152 24 263M 45172K run 128:16 0.60 0.60 rmiregistry

2 pts/tj 12375 root 154 10 28948K 4368K sleep 71:47 0.41 0.41 gpm

0 ? 23783 root 152 20 357M 5116K run 5:53 0.39 0.39 slapd

2 ? 36 root 152 20 7264K 7264K run 59:46 0.37 0.37 vxfsd

1 ? 14298 informix 152 20 212M 5016K run 121:54 0.31 0.30 java

2 ? 1650 root 152 20 214M 4476K run 119:03 0.30 0.30 prm3d

2 ? 16441 root -16 20 23864K 8528K run 114:21 0.24 0.24 midaemon

1 ? 1400 root 152 20 14476K 1832K run 0:50 0.23 0.23 dmisp

1 ? 3085 root 152 20 29364K 13512K run 13:08 0.23 0.23 rds

1 ? 8309 root 154 20 3712K 268K sleep 96:57 0.16 0.16 nmbd

2 ? 24478 informix 180 20 1275M 160K sleep 59:24 0.13 0.13 oninit

#########################################################################=
#
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Following is the extract from onconfig file for INFORMIX SERVER
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# Shared Memory Parameters
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LOCKS 100000 # Maximum number of locks
BUFFERS 375000 # Maximum number of shared buffers
NUMAIOVPS 2 # Number of IO vps
PHYSBUFF 32 # Physical log buffer size (Kbytes)
LOGBUFF 64 # Logical log buffer size (Kbytes)
CLEANERS 2 # Number of buffer cleaner processes
SHMBASE 0x0 # Shared memory base address
SHMVIRTSIZE 350000 # initial virtual shared memory segment =
size
SHMADD 16384 # Size of new shared memory segments =
(Kbytes)
SHMTOTAL 0 # Total shared memory (Kbytes). =
0=3D>unlimited
CKPTINTVL 300 # Check point interval (in sec)
LRUS 8 # Number of LRU queues
LRU_MAX_DIRTY 60.000000 # LRU percent dirty begin cleaning limit
LRU_MIN_DIRTY 50.000000 # LRU percent dirty end cleaning limit
TXTIMEOUT 0x12c # Transaction timeout (in sec)
STACKSIZE 64 # Stack size (Kbytes)
#########################################################################=
#

Regards,=20
Rohit=20

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Messages In This Thread

• oninit process consumes memory
  Kerhalkar, Rohit -- Wednesday, 25 February 2004, at 6:36 a.m.
  • Re: oninit process consumes memory
    Eric Rowell -- Wednesday, 25 February 2004, at 1:24 p.m.
  • Re: oninit process consumes memory
    Martin Fuerderer -- Wednesday, 25 February 2004, at 2:23 p.m.

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