Yes, it is a bit weird that crypto is sync and zlib is async. It'd be nice if we had a sync zlib API, and could move crypto stuff onto the thread pool, especially for TLS.
On Fri, Oct 26, 2012 at 12:49 AM, Jimb Esser <[email protected]> wrote: > That is exactly what node seems to do with the zlib API. Though there are > times where this is great, this API definitely bothers me, and causes some > problems. In theory, if I have a 4 core machine, and have 4 busy node > processes, and each of them try to use the zlib API, suddenly I've got 8 > cores worth of threads all fighting for the CPU (or, possibly many more if > multiple zlib requests are made and each process has a thread pool equal to > the number of cores?). Since zlib stuff is CPU-intensive, not I/O > intensive, it would be great if there was a synchronous API so that we can > ensure the handling of a single task (whether it be expensive JS code, or > zlib operations) is consuming only a core. The async API on Zlib stuff > seems odd when compared to the Crypto APIs, which are all synchronous, > despite being, I think, quite more CPU-intensive (per-byte) than Zlib. > > Admittedly, there are OS-level CPU affinity masks which could be used here, > but in general that's not particularly good for overall performance. > > On Thursday, October 25, 2012 2:39:10 PM UTC-7, Mark Hahn wrote: >> >> > Are you saying that node, internally, delegates CPU intensive work to >> > background threads? >> >> What the heck are you talking about? There is no such feature and there >> shouldn't be. >> > -- > 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 -- 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
