On Fri, Mar 30, 2012 at 13:13, Wan Li <[email protected]> wrote: >> > 1. Some processes utilized far more CPU time than others, but I'd expect >> > they should be have similar load. No? >> >> Load balancing is done by the operating system. The nodes in the >> cluster listen on a single socket, it's the OS that decides which node >> gets the connection. I've observed on Linux that if your cluster is >> mostly idle, the first few nodes receive the bulk of the work. > > Do you mean latest forked process will have much higher priority to be > selected on Linux? Didn't know that before. > This is not quite good for garbage collection.
I suspect it's beneficial. Task switches are relatively expensive for a variety of reasons. Giving slight preference to a particular process means you'll have less of those. The process remains "hot", so to speak. >> > This application is built upon express, it proxy HTTP requests, serve a >> > lot >> > of small files (sometimes we need to modify the content on-the-fly >> > before >> > send). >> > 2. Some processes have high RSS. I searched around, but can't find a way >> > to >> > take a snapshot or detect leaks. Do you have any suggestions? >> > Thank you! >> >> Try node-inspector (provided it compiles. It's kind of hit and miss). > > Inspector provides nice tools for debugging. But v8-profiler is stated as > very experimental and I may need it to take snapshot and see which objects > are likely leaking. And I don't think it works with hundreds megabytes data > remotely. There are plans to incorporate inspector-like functionality into the core. That won't happen before v0.8 or v0.9 though. >> On a side note, I would recommend that you upgrade to v0.6.14. There >> have been a lot of bug fixes, including a few memory / resource leaks, >> since v0.6.6. > > Thanks. > If I upgrade node to higher version and kill one child process not the > cluster, does the new child process forked by cluster use the new node? Yes. -- 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
