Hi, this is strange .... >>But AJAX calls from the extjs framework is not syncrounous. Eg. a page >>load can fire numerous AJAX calls to the backend. To me it seems that >>the gui takes the image list which is returned and then for each image >>calls the backend method 'path'.
Pveproxy which handle the http request, use event programming, so only 1 thread with never more that 1 query running at the same time. then, pveproxy is forwarding requests the pvedaemon, which use fork. So it should be also ok. >>If this call to path last longer than >>and, unknown to me, specified time the gui sends another call to the >>backend even though a previous request has not returned yet with a >>response. Yes, this is the browser which do a retry for GET requests if a timeout occur. ----- Mail original ----- De: "Michael Rasmussen" <m...@datanom.net> À: pve-devel@pve.proxmox.com Envoyé: Mardi 13 Août 2013 22:52:18 Objet: Re: [pve-devel] Plugin to add support for native ZFS on shared storage On Tue, 13 Aug 2013 04:08:08 +0000 Dietmar Maurer <diet...@proxmox.com> wrote: > > I do not understand that description. We have a simple programming model > using processes, > so there are no threads involved. Specially, run_command() is syncrounous, so > the output from one > command cannot interfere with the output from another. > But AJAX calls from the extjs framework is not syncrounous. Eg. a page load can fire numerous AJAX calls to the backend. To me it seems that the gui takes the image list which is returned and then for each image calls the backend method 'path'. If this call to path last longer than and, unknown to me, specified time the gui sends another call to the backend even though a previous request has not returned yet with a response. I cannot explain it in more details since I do not completely know what is happening but try to install the plugin on two different nodes, one with the last patch and one without and see for yourself. To trigger the behavior at least 10 to 15 images needs to be on the storage. -- Hilsen/Regards Michael Rasmussen Get my public GnuPG keys: michael <at> rasmussen <dot> cc http://pgp.mit.edu:11371/pks/lookup?op=get&search=0xD3C9A00E mir <at> datanom <dot> net http://pgp.mit.edu:11371/pks/lookup?op=get&search=0xE501F51C mir <at> miras <dot> org http://pgp.mit.edu:11371/pks/lookup?op=get&search=0xE3E80917 -------------------------------------------------------------- Program defensively. - The Elements of Programming Style (Kernighan & Plaugher) _______________________________________________ pve-devel mailing list pve-devel@pve.proxmox.com http://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-devel _______________________________________________ pve-devel mailing list pve-devel@pve.proxmox.com http://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-devel
