OK -- so your first approach is to make the interrupt service routine as lightweight as possible. If that means you're still dropping interrupts, you need to move to C or assembler to get a lighter weight ISR.
If that still isn't working, you'll need to move more of your application away from Perl and down to C or assembler until the desired performance is realized.
Alex / talexb / Toronto
"Groklaw is the open-source mentality applied to legal research" ~ Linus Torvalds
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