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From Apache Wiki <wikidi...@apache.org>
Subject [Db-derby Wiki] Update of "Derby1961ResourceUsage" by KnutAndersHatlen
Date Mon, 16 Oct 2006 12:38:03 GMT
Dear Wiki user,

You have subscribed to a wiki page or wiki category on "Db-derby Wiki" for change notification.

The following page has been changed by KnutAndersHatlen:
http://wiki.apache.org/db-derby/Derby1961ResourceUsage

------------------------------------------------------------------------------
  usage ([http://issues.apache.org/jira/browse/DERBY-1961 DERBY-1961]).
  If you have numbers you want to share, please add them
  to the Results section at the end.
+ 
+ The Derby version tested is 10.2.1.6.
  
  === Load ===
  
@@ -47, +49 @@

  
  ==== Object allocation per module ====
  
+ These results have been found by running the JVM with the `-agentlib:hprof=heap=sites,...`
option and analysing the stack traces that were dumped.
+ 
- || '''Module'''   ||<-2> '''Single-record select (20 clients)''' || '''Single-record
update (10 clients)''' || '''Join (4 clients)''' ||
+ || '''Module'''   ||<-2> '''Single-record select (20 clients)''' ||<-2> '''Single-record
update (10 clients)''' ||<-2> '''Join (4 clients)''' ||
- || Network server ||<style="text-align: right;"> 905 B/tx ||<style="text-align:
right;"> 15 objs/tx || || ||
+ || Network server ||<style="text-align: right;"> 905 B/tx ||<style="text-align:
right;"> 15 objs/tx ||<style="text-align: right;"> 586 B/tx ||<style="text-align:
right;"> 13 objs/tx || || ||
- || JDBC           ||<style="text-align: right;"> 416 B/tx ||<style="text-align:
right;"> 5 objs/tx || || ||
+ || JDBC           ||<style="text-align: right;"> 416 B/tx ||<style="text-align:
right;"> 5 objs/tx || || || || ||
- || Execution      ||<style="text-align: right;"> 1265 B/tx ||<style="text-align:
right;"> 21 objs/tx || || ||
- || Access         ||<style="text-align: right;"> 840 B/tx ||<style="text-align:
right;"> 25 objs/tx || || ||
- || Lock manager   ||<style="text-align: right;"> 579 B/tx ||<style="text-align:
right;"> 23 objs/tx || || ||
+ || Execution      ||<style="text-align: right;"> 1265 B/tx ||<style="text-align:
right;"> 21 objs/tx ||<style="text-align: right;"> 2041 B/tx ||<style="text-align:
right;"> 33 objs/tx || || ||
+ || Access         ||<style="text-align: right;"> 840 B/tx ||<style="text-align:
right;"> 25 objs/tx ||<style="text-align: right;"> 921 B/tx ||<style="text-align:
right;"> 28 objs/tx || || ||
+ || Lock manager   ||<style="text-align: right;"> 579 B/tx ||<style="text-align:
right;"> 23 objs/tx ||<style="text-align: right;">  707 B/tx ||<style="text-align:
right;"> 29 objs/tx || || ||
- || Buffer manager ||  || || || ||
+ || Buffer manager ||  || || || || || ||
- || Logging        ||  || || || ||
- || Data store     ||<style="text-align: right;"> 1099 B/tx ||<style="text-align:
right;"> 30 objs/tx || || ||
+ || Logging        ||  || ||<style="text-align: right;"> 93 B/tx ||<style="text-align:
right;"> 3 objs/tx || || ||
- || Transaction control ||<style="text-align: right;"> 80 B/tx ||<style="text-align:
right;"> 3 objs/tx || || ||
+ || Data store     ||<style="text-align: right;"> 1099 B/tx ||<style="text-align:
right;"> 30 objs/tx ||<style="text-align: right;"> 1327 B/tx ||<style="text-align:
right;"> 36 objs/tx || || ||
+ || Transaction control ||<style="text-align: right;"> 80 B/tx ||<style="text-align:
right;"> 3 objs/tx ||<style="text-align: right;">  136 B/tx ||<style="text-align:
right;"> 6 objs/tx || || ||
  
  
  More to come...

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