[cxml-devel] CXML performance

[Edi Weitz]

On Thu, 04 Sep 2008 20:23:04 +0530, Chaitanya Gupta <mail at chaitanyagupta.com> wrote:

> I tried using CXML to parse a slightly big (~1.2 MB) XML in ACL
> 8.0. I am using the following form to parse it into a DOM:
>
> (cxml:parse xml (cxml-dom:make-dom-builder)) ; xml is a string
>
> Generally, it takes about 0.73-0.75 sec to parse on my machine. What
> also happens is that, while the parser is running, it blocks all the
> other threads i.e. they become unresponsive. Any clues on why it can
> be happening? And how it can be fixed?
>
> Also, ACL on OS X (and Linux) does not run any Lisp code while a
> foreign call is being made (thus blocking all the other threads). Is
> there any chance that CXML calls any foreign code?

Unless they've changed this recently, AllegroCL (like LispWorks
pre-6.x) has a big lock which blocks all other threads no matter
whether they're Lisp or foreign threads.

Edi.