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c# - Usage of Server Side Controls in MVC Frame work -

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i using asp.net 4.0 , mvc 2.0 web application. project requiremrnt have use server side control in application not possibl in noraml case. ideally want use adrotator control , datalist control. i saw few samples , references in codepleax mvc controllib howwver found less useful. can tell how utilize theese controls in asp.net application along mvc. note: please provide functionalities related adrotator , datalist controls not equivalent functionalities thanks in advace. mvc pages not use normal .net solution makes use of normal .net components impossible. a normal .net page use event driven solution call different methods service side mvc use actions , view completly different way handle things. also, mvc not use viewstate normal .net controlls require. found article discussing mixing of normal .net , mvc.
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java - Better ways to identify objects not getting garbage collected? -

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in nutshell

i have program gradually using more , more memory on time. using jmap , jhat try , diagnose still not quite there.

background

the program long-running server backed hbase datastore providing thrift service bunch of other stuff. however, after running few days, hit allocated heap limit, , thrash , forth time spent in garbage collection. seem references getting kept lot of data somewhere

what i've done far

after fiddling jstat , jconsole ended taking heapdumps jmap of running process, , run through jhat, , numbers simple don't add anywhere near memory utilisation

jmap -f -dump:live,format=b,file=heap.dump 12765

jmap -f -dump:format=b,file=heap.all 12765

some stuff off top of histogram

class   instance count  total size class [b     7493    228042570 class java.util.hashmap$entry    2833152     79328256 class [ljava.util.hashmap$entry;     541     33647856 class [ljava.lang.object;    303698  29106440 class java.lang.long     2851889     22815112 class org.apache.hadoop.hbase.keyvalue   303593  13358092 class org.apache.hadoop.hbase.client.result  303592  9714944 class [i     14074   9146580 class java.util.linkedlist$entry     303841  7292184 class [lorg.apache.hadoop.hbase.keyvalue;    303592  7286208 class org.apache.hadoop.hbase.io.immutablebyteswritable  305097  4881552 class java.util.arraylist    302633  4842128 class [lorg.apache.hadoop.hbase.client.result;   297     2433488 class [c     5391    320190

while totals here don't add it, @ point heap dump taken process using on 1gb of memory.

the immediate apparent culprit seems i'm leaving hbase result , keyvalue entries on place. trying trace references, hit 

object @ 0x2aab091e46d0  instance of org.apache.hadoop.hbase.ipc.hbaseclient$call@0x2aab091e46d0 (53 bytes)  class:  class org.apache.hadoop.hbase.ipc.hbaseclient$call instance data members:  done (z) : true error (l) : <null> id (i) : 57316 param (l) : org.apache.hadoop.hbase.ipc.hbaserpc$invocation@0x2aab091e4678 (48 bytes)  this$0 (l) : org.apache.hadoop.hbase.ipc.hbaseclient@0x2aaabfb78f30 (86 bytes)  value (l) : org.apache.hadoop.hbase.io.hbaseobjectwritable@0x2aab092e31c0 (40 bytes)  references object:  other queries  reference chains rootset exclude weak refs include weak refs objects reachable here

help needed:

there seems no references final hbaseclient$call object(or of others it, each hold thousand or keyvalues internal data). shouldn't getting gced? misunderstanding how gc works or extent jhat verify references? if further can track down "missing" memory? other steps can take track down?

check java memory monitoring article link

this may on come issue http://java.sun.com/developer/technicalarticles/j2se/monitoring/


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