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How to determine CPU and memory consumption from inside a process?
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Linux
On Linux the choice that seemed obvious at first was to use the POSIX APIs like getrusage() etc. I spent some time trying to get this to work, but never got meaningful values. When I finally checked the kernel sources themselves, I found out that apparently these APIs are not yet completel...
What is a deadlock?
When writing multi-threaded applications, one of the most common problems experienced are deadlocks.
17 Answers
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How to manually create icns files using iconutil?
...ary/mac/documentation/GraphicsAnimation/…
– Peter Hosey
Sep 7 '12 at 6:44
@Anne: except the iconutil command is only...
Running python script inside ipython
Is it possible to run a python script (not module) from inside ipython without indicating its path? I tried to set PYTHONPATH but it seems to work only for modules.
I would like to execute
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System.currentTimeMillis vs System.nanoTime
...tem.currentTimeMillis() or System.nanoTime() when updating my object's positions in my game? Their change in movement is directly proportional to the elapsed time since the last call and I want to be as precise as possible.
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How to bundle a native library and a JNI library inside a JAR?
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It is possible to create a single JAR file with all dependencies including the native JNI libraries for one or more platforms. The basic mechanism is to use System.load(File) to load the library instead of the typical System.loadLib...
Apache Prefork vs Worker MPM
...ne and only one MPM must be loaded into the server at any time. MPMs are chosen during configuration and compiled into the server by using the argument --with-mpm=NAME with the configure script where NAME is the name of the desired MPM.
Apache will use a default MPM for each operating system unless...
How can I copy the output of a command directly into my clipboard?
...oing it like Ctrl+T on some systems, but this is just for illustration purposes):
Terminal 1:
pwd | c
Terminal 2:
cd `v`
Notice the ` ` around v. This executes v as a command first and then substitutes it in-place for cd to use.
Only copy the content to the X clipboard
cat file | xclip
If y...
How many socket connections can a web server handle?
Say if I was to get shared, virtual or dedicated hosting, I read somewhere a server/machine can only handle 64,000 TCP connections at one time, is this true? How many could any type of hosting handle regardless of bandwidth? I'm assuming HTTP works over TCP.
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Confused by python file mode “w+”
...tiple parameters. r, w, or a are exclusive, but b can be added to any of those, as can +, or U... It's a combinatorial explosion.
– rmunn
Oct 3 '14 at 6:41
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