I am able to launch WebStorm from the command line with webstorm . I am able to have two different projects: A and B (in this order) running in two separate instances of WebStorm. Nevertheless, when I open a third one C , A instance disappears. When then I close C, A reappears.
Is it a feature or a bug?
How can I have all A, B, C projects open at the same time?
I am able to open more than 2 projects at the same time. However, I have 32 GB RAM. Depending on how you configured WebStorm, each instance consumes considerable memory. If you only have, say, 8GB RAM you won't be able to open very many projects at once.
Related
Functions like endpointvolume and waveoutSetVolume only works for the application itself, and not the entire computer. Im looking for help, at finding options for code that will:
Control the master volume (The whole pc volume not only one application)
When opened (exe file) the code will place it self in the startup folder on the pc. I have thought of setPathway, but couldn't get it to work.
You can use SetMasterVolume(). As for making it start every time, see here: Add Application to Startup (Registry)
(i posted this question on VMware community forums, with no response)
All of my developers use VMware workstation 11 for running their Visual Studio development environments in Windows. I originally created a base VM, and then simply shared it around to all the users, unbeknown to all the issues it would cause with computer name conflicts, joining the domain, etc. Apparently I didn't 'sysprep' it. Someone with some VMware knowledge tried to help me out to set it up, but im still not sure if it is 100% correct.
I am now at a point where I need to make changes/updates to the base VM (new VS, run Windows Updates, etc) and distribute a new one around to all the developers again, and I need some help to make sure I do it properly this time:
I have 2 VM images currently: 1) a ‘base’ one that opens up to this screen http://screencast.com/t/tBO0IUvwtpbY and 2) one that opens up to this screen http://screencast.com/t/DLV71PeNygrk . I’m assuming it is the ‘base’ one that I make the ‘edits’ to?
If I do edit the ‘base’ VM, what option(s) should I choose in that sys prep dialog?
Once I make the necessary updates to the base VM, what do I need to do to 'prepare' it for distribution to my developers (do I need to run sys prep, do I need to make a copy of VM beforehand, etc)?
Currently the VM has 2 HD's: 1) used for the OS and applications (Persistent and non-Independent), and 2) used to store data files (Persistent and Independent) . Is this the best way to set it up and use the VM (and then use 'snapshots' to revert back to previous states), or should the OS disk be set up as 'non-persistent' after the user has set up the VM for first use (i.e. joined the domain, set up VS Workspace, etc) ? Basically we have had a few scenarios recently where the OS and VS have been corrupted and it took the devs a while to fix it, so I want them to have some sort of way to revert back to a known clean working state.
Thank you
In answer to your questions you are on the right track.
the first screen that opens is correct, customise everything you require in the OS then run the OOBE before distribution
Choose OOBE and tick Generalise, then choose shutdown.
Once the VM is shutdown export it and pass it round your developers. they will need to complete the wizard and then join to the domain if required, this will ensure all the sids are different on each server, remember they must still change the Servers name before joining the domain
Snapshots are best, if your dev needs to reboot etc he doesn't want to loose his changes, he then has the option to revert to a snapshot.
Hopefully this has answered your question, let me know if there is anything else you need :)
I use AVG and it recently detected a virus. It has before ;) but this was the first time I noticed this.
When I went into the folder containing the virus, AVG immediately, automatically, detected the virus without me even clicking on the application. So I though how could it know a virus was there even when I did not even click (single click) on it.
The only possible answer is that it continuously checks the explorer folder location of all windows and scans all the files in the folder. But how does it see what folder is being viewed by me?
Please explain (if possible) with a C program that does what ever AVG did.
Also : I use Windows if that helps.
When you open a folder a bunch of file system operations is executed (you can use tools like FileMon or ProcMon to take a look at this). Your AV software monitors file access.
There are multiple ways to do this monitoring, e.g. Filter Drivers - you can find a great sample at http://www.codeproject.com/Articles/43586/File-System-Filter-Driver-Tutorial
So when you opened the folder, AV software noticed that you opened a directory, consulted its own data, and informed you about the virus.
I say 'consulted its own data', as AV tools usually don't scan files on access - they do it when the files are written to, as it doesn't make sense to scan files which were marked as clean if they haven't changed since the last scan.
Most virus scanners operate on the principle of API hooks/filters. Whenever windows needs to process a command, like opening a folder, clicking a window, executing a file, etc it generates an api call along with some information like the window coordinates clicked, or a string representing a file. Other programs can request a hook into one or more of these functions which basically says 'instead of executing this function, send it to me first, then I might send it back'. This is how many viruses work (preventing you from deleting them, or copying your keystrokes, for example), how many games/apps work (keyboard, joysticks, drag-and-drop), as well as malware detectors and firewalls.
The latter group hooks the commands, checks any incoming ones to see if they're on the level, then either allows them to resume or blocks them. In this example, opening the folder likely triggered a syscall to parse a directory, and the scanner parsed it too (eg 'realtime protection'). To view all of your hookable functions as well as what is using them, google for a free program called 'sanity check' (previously called 'rootkit hook analyzer'). Most of the red entries will be from either windows firewall or avg, so don't worry too much about what you find.
I have an application that mmaps a large number of files. 3000+ or so. It also uses about 75 worker threads. The application is written in a mix of Java and C++, with the Java server code calling out to C++ via JNI.
It frequently, though not predictably, runs out of file descriptors. I have upped the limits in /etc/security/limits.conf to:
* hard nofile 131072
/proc/sys/fs/file-max is 101752. The system is a Linode VPS running Ubuntu 8.04 LTS with kernel 2.6.35.4.
Opens fail from both the Java and C++ bits of the code after a certain point. Netstat doesn't show a large number of open sockets ("netstat -n | wc -l" is under 500). The number of open files in either lsof or /proc/{pid}/fd are the about expected 2000-5000.
This has had me grasping at straws for a few weeks (not constantly, but in flashes of fear and loathing every time I start getting notifications of things going boom).
There are a couple other loose threads that have me wondering if they offer any insight:
Since the process has about 75 threads, if the mmaped files were somehow taking up one file descriptor per thread, then the numbers add up. That said, doing a recursive count on the things in /proc/{pid}/tasks/*/fd currently lists 215575 fds, so it would seem that it should be already hitting the limits and it's not, so that seems unlikely.
Apache + Passenger are also running on the same box, and come in second for the largest number of file descriptors, but even with children none of those processes weigh in at over 10k descriptors.
I'm unsure where to go from there. Obviously something's making the app hit its limits, but I'm completely blank for what to check next. Any thoughts?
So, from all I can tell, this appears to have been an issue specific to Ubuntu 8.04. After upgrading to 10.04, after one month, there hasn't been a single instance of this problem. The configuration didn't change, so I'm lead to believe that this must have been a kernel bug.
your setup uses a huge chunk of code that may be guilty of leaking too; the JVM. Maybe you can switch between the sun and the opensource jvms as a way to check if that code is not by chance guilty. Also there are different garbage collector strategies available for the jvm. Using a different one or different sizes will cause more or less garbage collects (which in java includes the closing of a descriptor).
I know its kinda far fetched, but it seems like all the other options you already followed ;)
If I already have an image that exists, can I create an image based on the existing one, except I want to make changes to the exisiting one (mainly configurations).
I do this all the time. I actually keep each of my VMs in a separate directory and duplicate the entire directory to make a copy. All references within the VMX file (configuration) are relative to the current directory.
One thing you need to watch out for. The VMX file has a line with the MAC address of the virtual network card:
ethernet0.generatedAddress = "00:0c:29:ff:1f:c7"
You'll need to change that if you want to run both VMs at the same time - I usually just bump the final digit up by 1 (to c8).
I also change the displayName in that file so I can tell the difference between them when they're running.
Yes, you can just copy the image off to external storage. Just find the image file(s) on your drive and do the copy when the image is not running. You can then change the original all you want. Is this what you are after?
What I do is create a base "clean" VM which I then run Sysprep on before cloning. You can run into a few problems when you don't reset the 'unique' elements of a windows installation and you're trying to run them simultaneously.
I'm running ~20 VMs at the moment and if any one gets seriously messed up (they're used for testing) I've got clean base images of Windows 2000, Windows XP, Vista and Server 2003 at the ready so I can be back up and running in 20mins or less.
Depending on what your needs are, you might try the (free) VMWare Converter. It lets you change drive sizes and other image parameters.
As others have said, this is exactly how you implement full backups for your VMs.
When the VM is not running, merely copy the virtual disks into a different location, then restart the VM.