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How do I find the thread ID of a process in Linux?
In the GNU C Library implementation running on Linux, the process ID is the thread group ID of all threads in the process. You can get the process ID of a process by calling getpid . The function getppid returns the process ID of the parent of the current process (this is also known as the parent process ID).
How do I see top threads?
The top command can show a real-time view of individual threads. To enable thread views in the top output, invoke top with “-H” option. This will list all Linux threads. You can also toggle on or off thread view mode while top is running, by pressing ‘H’ key.
How to determine which CPU a thread runs on?
We are developing a server application that processes http multicast streams and spawns multiple video encoders. This runs on a system with 12 physical cores, resulting in 24 logical CPUs (hyperthreading). Via TaskManager and ProcessExplorer we have verified that our spawned processes spread evenly over the logical CPUs.
How to query for a new thread in Java?
Don’t bother doing that. Instead use the Thread Pool. The thread pool is a mechanism (actually a class) of the framework that you can query for a new thread. When you ask for a new thread it will either give you a new one or enqueue the work until a thread get freed.
How to find the optimal number of threads?
The only way you can really find the optimal number of threads is trial an error. This is particularly true when you are using hard disks, web services and such. With hard disks, you might be better off not using all four processers on you quad processor CPU.
How to find the number of CPUs in a computer?
Here is some C# code to find the number of CPU’s: Unfortunately, it is not as simple as limiting yourself to the number of CPU’s. You also have to take into account the performance of the hard disk controller (s) and disk (s).