had the privilege to join a bootcamp in Littleton, Boston covering version 2.5 of Lotus Connections; take a look at the happy attendees – truly members of a an IT (intelligent Technology) community, as this technology is supposed to be …
joining a critsit in a large bank in Athens – WebSphere Portal 5.1, WCM, TAM ,TDS, TDI, ESB, db2, etc. Massive performance issues caused by inadequately tuning the environment, lack of system resources – basically returned to default values following tuning guides. Primary intention was to stabilize environment, as well as providing mid- to long [...]
gnuplot 2d
edit /etc/apache2/mod_log_config.conf and add a new logformat (plots) – (“mod_log_config.conf” is referenced by “httpd.conf”)
LogFormat “%h %l %u %t \”%r\” %>s %b \ \”%{Referer}i\” \”%{User-Agent}i\”” combined
LogFormat “%h %{%d.%m.%Y:%H:%M:%S}t %D %U” plots
The characteristics of the “%” directives are:
%…h Remote host
%…{format}t time & date
%…D time taken to serve the request, in microseconds.
%…U URL path requested
In Web applications, memory utilization can impact system performance significantly. One of the most common memory problems is memory leak, which causes severe performance degradation. In theory, memory leaks should not happen in Java™ because it has Garbage Collection (GC). However, GC only cleans up unused objects that are not referenced anymore. Therefore, if an [...]
./was_profile/bin/wsadmin.sh -conntype SOAP -host wcl.private.lan -port 10033 -user wasadmin -password passw0rd
WASX7209I: Connected to process “WebSphere_Portal” on node wcl using SOAP connector; the type of process is: unManagedProcess; WASX7029I: For help, enter: “$Help help”
wsadmin> set jvm [$AdminControl completeObjectName type=JVM,process=WebSphere_Portal,*]
WebSphere:name=JVM,process=WebSphere_Portal,
platform=dynamicproxy,node=wcl,j2eeType=JVM,
J2EEServer=WebSphere_Portal,version=6.0.2.17,
type=JVM,mbeanIdentifier=JVM,cell=wcl
wsadmin>$AdminControl invoke $jvm generateHeapDump
wsadmin>$AdminControl invoke $jvm dumpThreads
IBM’s support assistant (ISA) is an Eclipse based tool with quite a [...]