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Max size of shared memory segment.

Linux-ia64 Michael Madore 3 participants 3 messages Jun 11, 2001

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Hi,

What is the maximum size a shared memory segment can have on linux IA64?

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Mike Madore
Senior Software Engineer
TurboLinux, Inc.
(650)228-5203
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Quoted 1 line · Michael Madore

Mike> Hi, What is the maximum size a shared memory segment can have Mike> on linux IA64?

By default, it's 32MB but you can change that via /proc/sys/kernel/shmmax. There is no a priori limit for how big a value you can install there, but on IA-64 Linux you'll be limited to what fits in a single region. With 16KB pages, that would be 16TB.

	--david
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In reply to Michael Madore

Normally this is set to 32MB, but you can change it in file include/linux/shm.h (parameter SHMMAX). There is also /proc interface for shared memory parameters, but I don't think that you can use this interface to modify the parameters.....

rohit

-----Original Message-----
From: Michael Madore [mailto:[email protected]]
Sent: Monday, June 11, 2001 2:32 PM
To: [email protected]
Subject: [Linux-ia64] Max size of shared memory segment.

Hi,

What is the maximum size a shared memory segment can have on linux IA64?

Signature · 9 lines
Mike Madore
Senior Software Engineer
TurboLinux, Inc.
(650)228-5203

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