On Jul 2, 2009, at 1:55 PM, Paul Davis wrote:

On Thu, Jul 2, 2009 at 1:29 PM, Damien Katz<[email protected]> wrote:

On Jul 2, 2009, at 1:16 PM, Jason Davies wrote:

On 2 Jul 2009, at 15:38, Brian Candler wrote:

For some fruit that was so low-hanging that I nearly stubbed my toe on
it,
see https://issues.apache.org/jira/browse/COUCHDB-399


Nice work! I'd be interested to see what kind of performance increase we get from Spidermonkey 1.8.1, which comes with native JSON parsing/ encoding. See here for details: https://developer.mozilla.org/En/Using_native_JSON .

Rumour has it 1.8.1 will be released any time soon (TM)

I'm not sure the new engine is such a no-brainer. One thing about the new generation of JS VMs is we've seen greatly increased memory usage with
earlier versions. Also the startup times might be longer, or shorter.

Though I wonder if this can be improved by forking a JS process rather than
spawning a new process.


Memory usage is a definite concern. I'm not sure I follow why startup
times would be important though. Am I missing something?

Start up time isn't a huge concern, but it's is a something to consider. On a heavily loaded system, scripts that normally work might start to time out, requiring restarting the process. Lots of restarts may start to eat lots cpu and memory IO.

-Damien



-Damien

--
Jason Davies

www.jasondavies.com




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