The shared-memory tag has no wiki summary.
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use `/run/shm` (formerly `/dev/shm`) as a temp directory
Is it good practice to create a directory in /run/shm (formerly /dev/shm) and use that like a temp directory for an application?
Background: I am writing black box tests for a program which does a ...
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Viewing shared segments created by shmget
I'm trying to "visualize" shared memory between two processes. I've created a little server-client example where the client writes some data to a shared memory location and the server reads from it. ...
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Why is there no critical section in the pipe?
Why is there no critical section in the pipe? For example, as in shared memory.
In pipe have general data, which in common use in joint processes, but in the shared memory also have general data, ...
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1answer
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What is “SYSV00000000”?
In my dmesg this appeared when my window manager (xfwm4, part of XFCE) crashed:
xfwm4[3936]: segfault at 7f3c7c523770 ip 00007f3c7c523770 sp 00007ffffea1ee28 error 15 in SYSV00000000 ...
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2answers
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Linux - get shared memory values from Perl script
I'm trying to get shared memory information from a linux box. I'm looking for shmmax, shmmni, shmall, msgmax, msgmni, semmsl, semmns etc. How to get all those values from a Perl script. any help is ...
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3answers
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Share memory between a virtual machine and the host
Through shmget and shmat, I am able to access the data stored in one program from another program. Here's the gist of the code:
key=ftok("shared.c",'c');
shmid=shmget(key,1024,0644|IPC_CREAT);
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2answers
286 views
IPC: Shared memory killed process notification
In shared memory system, when two processes share a shared memory segment, after one process is killed, how will the other running process be notified of the killed process by the shared memory system ...
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Linux - why is kernel.shmall so low by default?
I run DB2 on Linux where I have to allocate the vast majority of memory on the machine to shared memory segments.
This page is typical of the info that I've found about shmall/shmmax:
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1answer
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What are shmpages in laymans terms?
What exactly are shmpages in the grand scheme of kernel and memory terminology. If I'm hitting a shmpages limit, what does that mean?
I'm also curious if this applies to more than linux
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1answer
255 views
What is the difference between shared memory in early unix systems vs modern unix systems?
How could processes share memory in early versions of UNIX version modern implementations of shared memory?
