debugging - What is Chrome doing with this "GC Event"? -


i'm getting following timeline simple site i'm working on. chrome tells me it's cleaning 10mb via gc don't know how be! insight appreciated.

gc event

i thought let expand image guess not - here's full size: http://i.imgur.com/fzjiglh.png

is site can check out or internal? i'd take peek. came across excerpt below while googling on google developers pages, memory analysis 101:

object sizes

memory can held object in 2 ways: directly object itself, , implicitly holding references other objects, , preventing them being automatically disposed garbage collector (gc short).

the size of memory held object called shallow size. typical javascript objects have memory reserved description , storing immediate values.

usually, arrays , strings can have significant shallow sizes. however, strings have main storage in renderer memory, exposing small wrapper object on javascript heap.

nevertheless, small object can hold large amount of memory indirectly, preventing other objects being disposed automatic garbage collection process. size of memory freed, when object deleted, , dependent objects made unreachable gc roots, called retained size.

the last bit seems potentially issue.

investigating memory issues

if you're inclined might want enable feature of chrome, chrome --enable-memory-info, , take peak behind curtain see chrome potentially getting hung on.

once have chrome running memory profiling enabled you’ll have access 2 new properties:

window.performance.memory.totaljsheapsize;  // used heap memory window.performance.memory.usedjsheapsize; // total heap memory

this feature covered in more details here.


Comments

Post a Comment

Popular posts from this blog

php - Wordpress website dashboard page or post editor content is not showing but front end data is showing properly -

Image
recently have uploaded wordpress site onto server. have uploaded wordpress site in sub-folder under root folder ../root(domain root folder)/wordpress (where host wordpress folder). now problem content data in page or post in dashboard of wordpress admin panel not showing - see image. but data showing in front view - see image. if not browser cache issue , not issue happened tinymce editor during upgrade; try add config file: define('concatenate_scripts', false);
Read more

How to get the ip address of VM and use it to configure SSH connection dynamically in Ansible -

i trying ip address of vm , trying use establish ssh vm. following script: --- - hosts: localhost become: yes connection: local gather_facts: false serial: 1 vars_files: - createvmvars.yml tasks: - name: gathering vm info. vsphere_guest: vcenter_hostname: "{{vcenter_hostname}}" username: "{{vcenter_username}}" password: "{{vcenter_password}}" guest: "{{guest_name}}" vmware_guest_facts: yes register: var - debug: msg="{{var.ansible_facts.hw_eth0.ipaddresses[0]}}" - name: establishing ssh connection. script: /home/shasha/devops/scripts/ssh_configure.sh "{{var.ansible_facts.hw_eth0.ipaddresses[0]}}" following content of ssh_configure.sh : #!/bin/sh ssh-keygen -t rsa ssh-copy-id $1 but when running playbook, getting following error while executing third task: error! 'var' undefined but debug module(second task) printin
Read more

javascript - Get parameter of GET request -

i make request: createxhrrequest( "get", fileurl, function( err, response ) { if( err ) { alert( "error get!" ); } alert(response); }); and full response: { "status" : "ok", "message" : "jvberi0xljqkjdduxdgkmy how can jvberi0xlj ? i try response.message , response["message"]. nothing works. just simple access this: var json = json.parse(response); json.message
Read more