I'm not convinced a regexp approach would be better than HtmlParser for a couple of reasons.
- HtmlParser already works on the stream directly using readers. - java regexp is decent, but not blazing fast like perl regexp. - to make it easy to extend, regexp isn't ideal. - html is dirty, so a developer would need sufficient expertise with regexp to get it to work correctly. - I'm not a regexp guru, but if some one else is willing to try to write a generalize package for scanning specific tags that can handle dirty html it would be great. - I'd rather write a Html compiler reading the bytes directly than use regexp. - HtmlParser is sufficiently fast and efficient that I think it is a good candidate to replace tidy. Plus I don't like having to build DOM just to get the images. I'm open to ideas. If no one objects, I will continue as planned and complete the new sampler using HtmlParser. peter --- Jordi Salvat i Alabart <[EMAIL PROTECTED]> wrote: > My experience with -Xincgc is that it never helps: > the overhead it adds > is so huge that the shorter GC pauses never > compensate for it. > > Have you thought about a regexp-based > implementation? It would be less > correct, but probably good enough, and possibly much > faster. > > -- > Salut, > > Jordi. > > peter lin wrote: > > I ran some benchmarks today with a new version of > httpsamplerfull using HtmlParser. the results are > interesting. Perhaps the biggest and most > interesting discovery for me is the dramatic > difference in performance between with and without > -Xincgc. > > > > http://tao.altern8.net:8080/comparison_summary.pdf > > > > the results are in pdf format. > > > > when I run JMeter with incremental GC, HtmlParser > version beats Tidy easily, but without incremental > GC, the performance gain is marginal as the number > of threads increase. > > > > it would appear incremental GC hinders DOM and > Tidy performance and results in a steady increase in > heap size. Without incremental GC, the response time > with HtmlParser is generally faster than with Tidy > by 5-10%. Under which circumstances is using -Xincgc > better for JMeter? > > > > the jdk I am using is 1.4.1 on windows. > > > > peter > > > > > > > > > > --------------------------------- > > Do you Yahoo!? > > The New Yahoo! Shopping - with improved product > search > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: > [EMAIL PROTECTED] > For additional commands, e-mail: > [EMAIL PROTECTED] > __________________________________ Do you Yahoo!? The New Yahoo! Shopping - with improved product search http://shopping.yahoo.com --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
