Why hasn't anyone posted --max-old-space-size=<size in MB> yet? Just do that w/ 8192 for instance, for 8gb.
On Thu, Aug 22, 2013 at 1:48 AM, NStal Loit <[email protected]> wrote: > Thank you peter, C++ binding is another choice I would consider, if I make > sure it's hard to remove v8 heap limit right now or in near future and > split process has unacceptable overhead. > > > > > On Thursday, August 22, 2013 1:23:21 PM UTC+8, Peter Rust wrote: >> >> > as well as quite a few others on npm: https://npmjs.org/search?** >> q=hashtable <https://npmjs.org/search?q=hashtable>. >> >> Ok, maybe not "quite a few" -- most of the other ones are implemented in >> Javascript. The only C++ ones I could find were >> >> >> - >> https://npmjs.org/package/**hashtable<https://npmjs.org/package/hashtable> >> >> (https://github.com/**isaacbwagner/node-hashtable<https://github.com/isaacbwagner/node-hashtable> >> ) >> - https://npmjs.org/package/dht **(https://github.com/tilgovi/** >> node-dht <https://github.com/tilgovi/node-dht>) >> >> A github search for "hash table" returns 107 C hits and 64 C++ hits, so >> there are a lot to choose from, you would just need to write node >> bindings <http://nodejs.org/api/addons.html>. Here are some pages that >> may be helpful if you're interested in picking & choosing: >> >> - a great breakdown of the performance characteristics of the top >> hash table >> implementations<http://preshing.com/20110603/hash-table-performance-tests> >> - a detailed comparison of a Judy Array and a fine-tuned hash >> table<http://preshing.com/20130107/this-hash-table-is-faster-than-a-judy-array> >> - a different comparison of hash table >> libraries<http://attractivechaos.wordpress.com/2008/08/28/comparison-of-hash-table-libraries/> >> . >> >> -- peter >> >> On Wednesday, August 21, 2013 10:04:17 PM UTC-7, Peter Rust wrote: >>> >>> If all you need is a hash table, there are a lot of hash table C/C++ >>> libraries that you could integrate with Node (like >>> Judy<http://judy.sourceforge.net/>) >>> and there are a few that have already been integrated, like >>> https://npmjs.org/**package/hashtable<https://npmjs.org/package/hashtable> >>> (that >>> specifically lives outside of v8's memory constraints) >>> >>> > The hash strategy behind the scenes must be interesting >>> >>> I found this page that describes (at least some of) what's happening >>> behind the scenes: https://developers.**google.com/v8/design?hl=sv&** >>> csw=1#prop_access<https://developers.google.com/v8/design?hl=sv&csw=1#prop_access>. >>> v8 is creating a new dynamic behind-the-scenes class when you add >>> properties. As someone on the v8 users list >>> says<https://groups.google.com/forum/#!topic/v8-users/jrw3Eh2cO4U>: >>> "in general JS objects in V8 are not optimized to be used as large hash >>> tables. Most likely, it would be best to implement your own hash table data >>> structure using an array as a backing store instead of using a JS object as >>> a hash table". >>> >>> Best of luck! >>> >>> -- peter >>> >>> >>> -- > -- > 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 > > --- > You received this message because you are subscribed to the Google Groups > "nodejs" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/groups/opt_out. > -- -- 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 --- You received this message because you are subscribed to the Google Groups "nodejs" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
