Hi, I'm making an application that make an AJAX request frequently from page

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 <

Please help! I don't understand how xwiki works on this. Thank in advanced. -- View this message in context:

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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 &lt;thomas.mortagne(a)xwiki.com&gt; > 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 &lt;lequan.moon(a)gmail.com&gt; > wrote: > > Hi, > > I'm making an application that make an AJAX request frequently from

> 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 > > < >

> > > > Please help! I don't understand how xwiki works on this. > > > > Thank in advanced. > > > > > > > > > > -- > > View this message in context: >

-- ======Lê Minh Quân====== _______________________________________________ devs mailing list devs(a)xwiki.org http://lists.xwiki.org/mailman/listinfo/devs

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 &lt;thomas.mortagne(a)xwiki.com&gt; > 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 &lt;lequan.moon(a)gmail.com&gt; wrote: > > Thank you > > It's true that the more script responing page processes, the more

> > are loaded. > > Is there anyway to prevent OutOfmemory Exception happened? > > > > > > 2013/9/26 Thomas Mortagne &lt;thomas.mortagne(a)xwiki.com&gt; > > > >> 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

> >> 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

> >> 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 &lt;lequan.moon(a)gmail.com&gt; > >> 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 > >> > < > >> >

> >> > > >> > Please help! I don't understand how xwiki works on this. > >> > > >> > Thank in advanced. > >> > > >> > > >> > > >> > > >> > -- > >> > View this message in context: > >> >

-- ======Lê Minh Quân====== _______________________________________________ devs mailing list devs(a)xwiki.org http://lists.xwiki.org/mailman/listinfo/devs

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 &lt;thomas.mortagne(a)xwiki.com&gt; > 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 &lt;lequan.moon(a)gmail.com&gt; 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 &lt;thomas.mortagne(a)xwiki.com&gt; > > > >> 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 &lt;lequan.moon(a)gmail.com&gt;

> >> > 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 &lt;thomas.mortagne(a)xwiki.com&gt; > >> > > >> >> I doubt it has anything to do with the request itself, it's

> >> >> more related to what your page is doing. From what I understand

> >> >> page create directly or indirectly new classes. Note that most

> >> >> languages compile the script into a new Java class before

> it > >> >> so if you execute a lot of very big scripts at the same time it

> >> >> probably be pretty costy for the permgen. Something else that

> be > >> >> costy is if you load a jar in this page for example with the

> >> >> property of script macros. > >> >> > >> >> On Thu, Sep 26, 2013 at 8:53 AM, lequan.moon <

> >> >> wrote: > >> >> > Hi, > >> >> > I'm making an application that make an AJAX request frequently

> >> page > >> >> to > >> >> > page in xwiki. > >> >> > About 1 per 10s > >> >> > The request look like this: > >> >> > > >> >> > $.ajax({ > >> >> > type: "GET", > >> >> > crossDomain: true, > >> >> > url:

> >> >> > 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,

> >> >> > I took a look at jconsole and here it is > >> >> > < > >> >> > >> >

> >> >> > > >> >> > Please help! I don't understand how xwiki works on this. > >> >> > > >> >> > Thank in advanced. > >> >> > > >> >> > > >> >> > > >> >> > > >> >> > -- > >> >> > View this message in context: > >> >> > >> >

-- ======Lê Minh Quân====== _______________________________________________ devs mailing list devs(a)xwiki.org http://lists.xwiki.org/mailman/listinfo/devs

Thank you. I'll try it. 2013/9/26 Thomas Mortagne &lt;thomas.mortagne(a)xwiki.com&gt; -- ======Lê Minh Quân======