Server :: Concurrent Users Accessing Web App Throughout The Day?
Feb 11, 2011
I've got a lamp solution deployed that I didn't write but I do have root access to the server. What might be the best way to determine the number of concurrent users accessing this web app throughout the day?
I'm running Windows 7 in VMPlayer under Linux. I made some changes to Windows 7 to allow it to have two people logged in at the same time. However when I do this the sound lags behind on the host machine.
Is there a different version of Windows where I am less likely to have this problem?
I would like to experiment a "green" idea of virtual desktop where multiple users are served by a single powerful machine.
I have a server running 24/7. The monitor of this machine is turned off most of the time and the OS is on the login screen.
Other users, in the same local network, use less powerful machines, which could be a thin client or an old Pentium 3 machine. They access their accounts remotely and work with the GUI as if they were sitting in front of the server. Each user sees their own desktop (different themes, screen resolution, etc.). And of course it can happen that several users could log in at the same time.
The usage is modest: mostly web browsing and the usual default applications (office, wine, gimp, etc.). In particular no games or any demanding applications. The users want to use their desktop in graphical mode only.
Question: How do we call this way of using a server? Is it possible with Ubuntu? And how to implement it?
More of a "Knowledge" question... Is their a limit to the number of reads a single file can take? Say for example I have a file named config.xml in an htdocs directory and a XMLReader function from PHP reads some value(s) out of this file for every connection of Apache or NGinx. Now suppose my site receives a gigantic spike in traffic (but Apache stays opertational through it all)... Is their a point at which the underlying system would simply not be able to open+read config.xml anymore??
I am working on an epoll version of an echoserver that I am porting from a multithreaded version I wrote.What it should do: The server should get a connection from a client > say x client connected > print x message from said client. What it is doing: The server looks like it is only accepting one connection at a time, and any other clients are queued. When the queue is empty it looks like the program is aborting with a SIGABRT. EDIT:// fixed the program exiting in the close function. Still one client at a time
When you guys su or su -l in a X terminal as another user and/or root, do your user get a ~/.xauthXXXXXX with the magic cookie of the display owner, which allows him/her to start a GUI application? ... or is that just me? If not, under which environment (KDE, Gnome, etc) and how do you start X then?
I currently have samba setup and connecting. What I am trying to do is have multiple users with access to different directories. For example , let's say there are folders A B C on my Linux machine. I want one guy to see A and C and another guy to see B and C and a third guy to see them all. But I want each user to have access to change delete or execute the files within these directories that they have access to
I've just added my wife as a seperate user on my desktop and have a question about shared network folders. So /etc/fstab mounts network folders from a second computer and until today I've mounted them to /home/David/NetworkData
This of course means that when my wife logs in she won't see them since they're not mounted to her home folder. So what folder should I use and what tricks so that we both have it visible and accessible in Places from the top menu?
as we know in windows xp drive and folder permissions, we perform (folder-right click-properties-security tab-we check, group or user and assign ALLOW or DENY access to the folders) In the same way i want to DENY access to my windows driver sda1 & sda2 from the Debian OS. my system is being used by 3 users: user1, user2 & user3. All can access to all Volumes, so I want to Deny the users 2 & 3 from accessing my windows driver and folders. BUT i alone user 1 should have permission to access them. How do i change that in Debian 5.5? Allow/Deny Permissions to Volumes.
I run a system that users may log into either remotely or physically. Multiple users may be logged in simultaneously because of the remote access, but only one user can be physically logged in at a time.With the current setup, however, if the physical user inserts a flash drive (which the OS mounts automatically) then the remote users gain access to the removable media.
apache virtual host to limit the concurrent connections of virtual hosts? Taking into account the host of each virtual user's home directory can also have more than one subdirectory, which should be restricted to a subdirectory. Is beyond the control of the operation of these sites in a subdirectory. Best local restrictions or limitations to the overall situation.
I have a dual core processor and would really like to take full advantage from it. I'm pretty sure that only one core is being used when booting and I would like ti know if this is true for the rest of the laptop usage.Furthermore, I tried to follow a tutorial in order to edit/etc/init.d/rc*****Tutorial indicated that one could get the concurrency by changing the value CONCURRENCY=none to CONCURRENCY=shell however the file clearly says that "shell" is not a valid option, so I made no change
I have inherited a RedHat 5.4 server that is having an odd issue. Root and all of the user accounts can log in via SSH. Not a single account can log in via the console (sitting in front of the server). If I bring it up in single user made, I can log in with root all day long.
I want to say that this has something to do with PAM, but this is when I play my "Noob" card. Could anyone possibly steer me in the right direction to figure out what is going on?
I was installed xming application on windows XP & Windows 7to access Linux server's GUI session and i was able to access it using root account but when ever iam trying to access GUI using normal account it is giving some error.I am testing this since it is a freeware.
How do I find the maximum number of concurrent connections (in any state)? I'm running RHEL5 2.6.18-194.26.1.el5. Also, does tcp auto tune affect the number of concurrent connections or is it mostly used for dynamic buffer size allocation?
FTP servers I use frequently have imposed a simultaneous connections limit, usually 5-10 at the time. It was no problem under Windows, since Windows artificially limits allowed FTP connections to ~10 as far as I know. But it is a problem under Linux very much since I cannot find how to limit them :/ So far I used these clients: Native FTP client (Places -> Connect to FTP server). No apparent way to limit connections.
FileZilla. Under particular server settings you can limit number of simultaneous connections. Also you can do that globally in Edit -> Preferences -> Transfers. Problem is, it doesn't work, I still keep getting the 530 Sorry the maximum number of clients (10) for this user are already connected. And netstat shows quite a few simultaneous FileZilla connections no matter that I limited them to 1 both in global and local settings.
NCFTPPUT. 10 successful uploads and hi 530. Total Commander under Wine. Same. NetBeans IDE integrated ftp. Same. Some other crapy FTP clients which names I already forgot. Same. OS is Ubuntu 10.04 So, is there any way to force any of these FTP clients to use less than 10 concurrent connections?
I have a very simple question .I need to tune Kernel paramaters in RHEL 5 server to increase the number of concurrent connections what is the command to do this .How do i know the defaults and the maximum value i can raise this to.
I'm looking for a way to store an encrypted filesystem on rsync.net which can be mounted and used by multiple clients concurrently - I've considered and experimented with many different ideas, including code...
but all of them are leading me to what looks like a fundamental theoretical problem: a filesystem with concurrent access needs someone to manage it, and who's going to manage it if I can't trust the server? Or refuse on principle to trust the server? There would need to be some trusted entity communicating with every client and making decisions to keep the filesystem and/or block device consistent, right?
Is my understanding correct, or is there any way of achieving what I'm trying to do?
I currently have a RHEL 5.4 software development server. A lot of my developers are using windows desktops and they need to run interactive sessions on the server. I need to support between 4-6 concurrent users on the server. I tried doing this with VNC but I was never able to set that up for more than one user at a time.
I am trying run audio conversion on my server that I want limited to a certain number of processes based on process name. I am using the following script but it isnt limiting the number of job like I want it to.
Code: #!/bin/bash $num_jobs = 13 while [ $(ps -A | grep -v grep | grep -c pacpl) -ge $num_jobs ] do sleep 1
Im trying to config my intranet to be accessible from inside the network (lan) without need of password and ask for a passwd for those who are viewing from Wan ....
Today my intranet can only be accessed from Lan, external access give me an Unauthorized message, I took look around, try #irc and still can get the appropriated help, I hope that someone here could help me on that...