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Questions tagged [pthreads]

For questions related to POSIX Threads API.

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Suddenly I see a lot of involuntary context switches for multi threaded app

I have a multi-threaded app, with 4 worker threads that until recently performed very well on my 4-core CPU. The system is running Ubuntu 16.04.3 LTS. Today I updated my OS with sudo apt-get dist-...
Bram's user avatar
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mysqld thread count exceeds max_connections

As the question title suggests: I have set max_connections = 2 in my my.cnf file, but when I activate my mysql daemon, the thread count sits at 37. I am searching online but cannot find indication my ...
user10709800's user avatar
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Behavior of Linux kernel with respect to machine check exceptions (MCE) and threads

I was recently working with custom hardware that was not fully respecting the PCIe bus standards, and certain reads from the device would cause a bus fault and Linux machine check exception. When this ...
Colin's user avatar
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file lock existence check on remote host

I want to check the existence of file lock on a file in gluster file system. So that I can see from any host that whether file lock is held by any process (remote or local) on file in gluster file ...
dcds's user avatar
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Linux (kernel 3.x and 4.x) Pthread and general process scheduling algorithms

I was wondering if both scheduling (contention) scopes (SYSTEM and PROCESS) are used in the Linux kernel scheduling logic. POSIX supports PROCESS scope pthreads (MXN model) and SYSTEM scope pthreads (...
tamumiket's user avatar
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Can I prevent a pthread from ever being interrupted by the scheduler?

I'm programming an embedded real-time Linux device with a 4 core ARM CPU. There is a requirement for a periodic computation at 10 kHz that should not jitter too much and should never be lost. My POSIX ...
Jens's user avatar
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2 answers
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Simple Scan crashes almost immediately upon start-up

I'm using simple-scan on Debian and it is now always crashing. It worked fine a few months ago. I suspect that something got upgraded (I'm running bullseye) and broke things. The output from simple-...
roberttheprogrammer's user avatar
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1 answer
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Linker cannot find libpthread

I am trying to build 32bit versions of two programs, and both shows the same error message /usr/bin/ld: cannot find /media/34GB/Arquivos-de-Programas-Linux/Glibc-2.17-32bit/lib/libpthread.so.0 I ...
user2752471's user avatar
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Can a signal in one thread, interrupt sleep period of another thread of the same process in linux

There are two threads (parent thread and child thread, both runs in their own infinite loop) in a process. The parent thread does only one work, i.e. to continuously (while(1)) check the system time ...
reddi hari's user avatar
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1 answer
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How can I view threads for a running process that is creating threads?

I made a very small program that creates two threads: #include <pthread.h> #include <stdio.h> #include <unistd.h> void *start() { printf("Am a new thread!\n"); ...
alkabary's user avatar
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