Thank Thomas. The problem is much more smaller now. Still I need a long-term test for sure but thank a lot. We can close this topic. 2013/9/26 Quân Lê <[email protected]>
Thank you. I'll try it.
2013/9/26 Thomas Mortagne <[email protected]>
You could install it as extension so that it's not loaded with each script. Go you admin, Add Extension and use advanced search with id com.gmongo:gmongo and version 1.0 (or any other version you want).
Another possibility is to download gmongo and MongoDB Java Driver jars and put them into /WEB-INF/lib/.
On Thu, Sep 26, 2013 at 10:17 AM, Quân Lê <[email protected]> wrote:
Thanks. But now I don't know any other way to get and access MongoDB in xwiki. Any links or documents?
2013/9/26 Thomas Mortagne <[email protected]>
Your issue may be caused by @Grab, that download and load jars into the permgen.
On Thu, Sep 26, 2013 at 9:58 AM, Quân Lê <[email protected]> wrote:
I tried with XX:MaxPermSize=256M but with 1 request per 2sec. The PermGen memory is going like 15mb/min. All the code of responing page is just like this: {{groovy}} @Grab(group='com.gmongo', module='gmongo', version='1.0') import com.gmongo.GMongo import groovy.json.*
def data = [] // a list contain data
def gmongo = new GMongo() def dbConn = gmongo.getDB('dbtest') // Not query database but it already go crazy gmongoObject.close()
// For GC dbConn = null gmongoObject = null
// Convert into JSON def slurper = new JsonSlurper() def builder = new JsonBuilder(data) println builder.toString()
// For GC slurper = null builder = null {{/groovy}}
2013/9/26 Thomas Mortagne <[email protected]>
Well without changing your script all I can suggest is to allocate more permgen to java using
-XX:MaxPermSize=<enough memory>M
On Thu, Sep 26, 2013 at 9:25 AM, Quân Lê <[email protected]> wrote: > Thank you > It's true that the more script responing page processes, the more classes > are loaded. > Is there anyway to prevent OutOfmemory Exception happened? > > > 2013/9/26 Thomas Mortagne <[email protected]> > >> I doubt it has anything to do with the request itself, it's probably >> more related to what your page is doing. From what I understand your >> page create directly or indirectly new classes. Note that most script >> languages compile the script into a new Java class before executing it >> so if you execute a lot of very big scripts at the same time it can >> probably be pretty costy for the permgen. Something else that could be >> costy is if you load a jar in this page for example with the "jars" >> property of script macros. >> >> On Thu, Sep 26, 2013 at 8:53 AM, lequan.moon < [email protected]> >> wrote: >> > Hi, >> > I'm making an application that make an AJAX request frequently from page >> to >> > page in xwiki. >> > About 1 per 10s >> > The request look like this: >> > >> > $.ajax({ >> > type: "GET", >> > crossDomain: true, >> > url: "/xwiki/bin/get/Lib/LibPage?outputSyntax=plain", >> > dataType: 'text', >> > data: data2send, >> > success: function(result) {...}, >> > error: function(xhr, status, error) { >> > console.log(error) >> > console.log(status) >> > console.log(xhr) >> > } >> > }); >> > >> > And respone is simple as a text or something like a JSON Map, List. >> > I took a look at jconsole and here it is >> > < >>
http://xwiki.475771.n2.nabble.com/file/n7587262/9-26-2013_1-51-09_PM.jpg>
>> > >> > Please help! I don't understand how xwiki works on this. >> > >> > Thank in advanced. >> > >> > >> > >> > >> > -- >> > View this message in context: >>
http://xwiki.475771.n2.nabble.com/Frrequently-AJAX-request-caused-PernGen-Ex...
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