On Thursday, December 6, 2012 3:18:42 AM UTC+1, 長島徹 wrote: > > Thanks for the response. > > Can I avoid or lessen that worker threads delay the JavaScript main thread? > 4 CPU cores exists and HT supported. > (I think ... the priority of main thread set to higher, ...?) >
The main thread can get pre-empted if you saturate all the cores in your machine. (And yes, it would be possible in theory to ramp up the priority of the main thread with pthread_setschedparam; you'll have to hack node or create a compiled addon to do that though.) That however is not the "problem" that you are seeing here. Your seem to assume that "reading and compressing a file" is executed as a single operation in a thread pool thread. That's not how it works; node will first read a small chunk of data in the thread pool, then compress it, then write out the compressed data while reading in a new chunk of data in parallel, etc. Effectively, each of your "compress-a-file" operations are broken up in small chunks that are interleaved and partly run in parallel on the thread pool; that's why you see them complete all at the same time. - Bert -- Job Board: http://jobs.nodejs.org/ Posting guidelines: https://github.com/joyent/node/wiki/Mailing-List-Posting-Guidelines You received this message because you are subscribed to the Google Groups "nodejs" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/nodejs?hl=en?hl=en
