Help coderanch get a
new server
by contributing to the fundraiser
  • Post Reply Bookmark Topic Watch Topic
  • New Topic
programming forums Java Mobile Certification Databases Caching Books Engineering Micro Controllers OS Languages Paradigms IDEs Build Tools Frameworks Application Servers Open Source This Site Careers Other Pie Elite all forums
this forum made possible by our volunteer staff, including ...
  • Campbell Ritchie
  • Jeanne Boyarsky
  • Ron McLeod
  • Paul Clapham
  • Liutauras Vilda
  • paul wheaton
  • Rob Spoor
  • Devaka Cooray
Saloon Keepers:
  • Stephan van Hulst
  • Tim Holloway
  • Carey Brown
  • Frits Walraven
  • Tim Moores
  • Mikalai Zaikin

Custom Tag Performance on WAS

Ranch Hand
Posts: 162
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
I'm having a JSP which is full of tags that it calls. A typical call count would be 70-150. So, the JSP has nothing but (custom) tags inside it.
When I hit it for the first time, jsp gets compiled and .class is created. When WAS goes to load that file it takes around 15 mins to load the stuff.
When response comes back, we get proper page rendered in browser, which scales ok even for 500 users.

Here are some findings.

1) Such performance issue is for first time loading of custom tags jsp. Second request onwards response is in a flash.
2) It takes around 20 mins to load the jsp class files + any other required class files. (.class is already compiled.)
3) Issue pops back again when we restart server. So compilation is out of question. The loading is still the issue.
4) It doesn't do any heavy duty stuff in code, just simple UI formation stuff.

As we know a tag instance would be created in method local scope, so all tags would be recreated and executed on each request. We can change this with tag page pooling to instantiate tag at instance level in generated jsp,
still it's not giving any load time improvements.

In my experience I've noted that if you have equiv. jsp methods or helper methods instade of custom tags, it works much much faster.

Do you think it's possible to optimize this or I better move to simple method based solution?

"To do good, you actually have to do something." -- Yvon Chouinard
We need your help - Coderanch server fundraiser
    Bookmark Topic Watch Topic
  • New Topic