Liferay + ZK + Hibernate: Performance

asked 2009-04-16 02:05:25 +0800

mrSmall
30

Hi,

I am doing some short performance tests on my project:

Three configs:
1. Empty portal page
2. Page with 2 ZK Portlets, each with only a Window-Component w/o children
3. Page with 2 ZK Portlets, each with one Listbox loaded from DB over Liferay-Service (Spring, Hibernate, MySql 5) (ca. 20 Items)
4. Page with 2 ZK Portlets, each with one Listbox filled with integers 0-20 (also ca. 20 Items =)

Server: Ubuntu on Amd X2, 4GB RAM, SW RAID with 2 SATA drives
Client is the same machine, just to exclude the network as an variable.

So, now some numbers:
On 120 requests with 40 concurent request repeated 2 times, I have folowing results for

Config 4 (20 Integers in Listbox): 13-14s. mean time pro request
Config 3 (20 items from DB): 14-15s. mean time pro request
Config 2 (Empty window): 3-4s. mean time pro request
Config 1 (empty page): 1-2s. mean time pro request

Tests are made with "ab"-Tool (ApacheBench) and are very simple: no ajax, no js, nothing but one http-request.

Are listboxes so "slow" / heavy weight?

We are using much Listboxes with all possible molds in our project, that's because I made this quick test.

A real page from project (some Liferay standart portlets, and one big ZK thing with 5 Listboxes filled from DB, 2 Dateboxes and paging on one Listbox) is at 18 seconds mean time pro request (30 seconds w/o tomcat tuning), so caching is a possible solution, but unfortunatly not for this problem.

Is there a way to make Listboxes faster?

Best regards,
mrSmall.