v1.4.16 linux - constant memory increase

Hi Marcel,

a few weeks ago I migrated our Linux Conquest from v1.4.14 (32 bit) to 1.4.16 on a new server (64bit, 4GB RAM).

Since then I observe a constant increase in memory usage from around 300MB (after reboot) to 4GB (after 2 days) with a significant performance decrease (especially write operations). I checked several forum posts and added
[lua]
endassociation = (print('--->' .. heapinfo())
to dicom.ini to get some memory info, but is does not show any output (I'm not familiar with lua).

Since I assume it is a problem related to memory leakage my questions are
1. How can I log the relevant information correctly?
2. Is this a known problem?
3. How can I overcome the problem (migration to 1.4.17)?

Thanks in advance for your feedback.

Kind regards
Frank

Hi Marcel,

thanks for your reply. Concerning the lua line I mistyped, sorry, it is actually
[lua]
print('--->' .. heapinfo())
but still does not show any output. Do I have to add anything? Below I attached my full dicom.ini.

Conquest and mysql are the only applications running on my server. The statistics from iostat show wBlk_srv/s : 200-300 which corresponds to 2-3 DB writes/sec.
In serverstatus.log I see for every image the line
[recompress]: recompressed with mode = un (strip=0)
I actually thought with mode un there is no compression?!

Kind regards
Frank

dicom.ini:
# This file contains configuration information for the DICOM server
# Example Linux version using MySQL
# Copy this file to dicom.ini to use it

[sscscp]
MicroPACS = sscscp
Edition = Personal

# Network configuration: server name and TCP/IP port#
MyACRNema = CONQUESTSRV1
TCPPort = 5678

# Reference to other files: known dicom servers; database layout; sops
ACRNemaMap = acrnema.map
kFactorFile = dicom.sql
SOPClassList = dgatesop.lst

# Host for postgres or mysql only, name, username and password for database
SQLHost = localhost
SQLServer = conquest
Username = conquest
Password = ***
PostGres = 0
MySQL = 1
SQLite = 0

UseEscapeStringConstants = 0
DoubleBackSlashToDB = 1
#IndexDBF = 1
#PackDBF = 0
#LongQueryDBF = 1000

# Configure database
TruncateFieldNames = 10
MaxFieldLength = 254
MaxFileNameLength = 255
FixPhilips = 0
FixKodak = 0
UIDPrefix = 99999.99999
EnableReadAheadThread = 1
PatientQuerySortOrder =
StudyQuerySortOrder =
SeriesQuerySortOrder =
ImageQuerySortOrder =
EnableComputedFields = 0
TCPIPTimeOut = 300
FailHoldOff = 60
RetryDelay = 100
QueueSize = 128
WorkListMode = 0
WorkListReturnsISO_IR_100 = 1
DebugLevel = 4
Prefetcher = 0
LRUSort =
AllowTruncate =
DecompressNon16BitsJpeg = 1
UseBuiltInJPEG = 1
IgnoreOutOfMemoryErrors = 1
PadAEWithZeros = 0
FileNameSyntax = %modality/%id/Study_%studyid/Series_%seriesid/%sopuid.dcm

# Configuration of compression for incoming images and archival
DroppedFileCompression = un
IncomingCompression = un
ArchiveCompression = as

# Names of the database tables
PatientTableName = DICOMPatients
StudyTableName = DICOMStudies
SeriesTableName = DICOMSeries
ImageTableName = DICOMImages
DMarkTableName = DICOMAccessUpdates
RegisteredMOPDeviceTable = RegisteredMOPIDs
UIDToMOPIDTable = UIDToMOPID
UIDToCDRIDTable = UIDToCDRID

# Banner and host for debug information
PACSName = CONQUESTSRV1
OperatorConsole = 127.0.0.1

# Configuration of disk(s) to store images
MAGDeviceThreshhold = 0
MAGDevices = 1
MAGDevice0 = /pacs/pacs

[lua]
endassociation = print('--->' .. heapinfo())