Shmmax: Difference between revisions

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shmmax is a kernel parameter that defines how much shared memory a program can be allocated. You may need to up or ~~down~~ this limit for a program to work or for security. This guide will show you how.

shmmax is a kernel parameter that defines how much shared memory a program can be allocated. You may need to increase or decrease this limit for a program to work or for security. This guide will show you how.

== What you need to know ==

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# Open KWrite.

# ~~Goto~~ 'File' and then 'Open'.

# Go to 'File' and then 'Open'.

# You'll need to click 'root' down the left hand side (usually the red folder). Navigate to <code>etc</code>. You then need to find the file <code>sysctl.conf</code> (The full path to the file is <code>/etc/sysctl.conf</code>).

# Click at the bottom of the typable area, ready to type.

# Type or copy and paste the following statement: <code>kernel.shmmax = <value></code> (<code><value></code> needs replacing with the amount of shared memory you want each program to be allowed. This value is in '''bytes'''.

# Type or copy and paste the following statement: <code>kernel.shmmax = <value></code> (<code><value></code> needs replacing with the amount of shared memory you want each program to be allowed. This value is in '''bytes''').

# Once you have the statement in place, click the 'Save' button across the top toolbar (usually with a floppy disk icon). The title at the top of the window should not read '(Modified)'.

# Close KWrite and restart your system.

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-shmmax is a kernel parameter that defines how much shared memory a program can be allocated. You may need to up or down this limit for a program to work or for security. This guide will show you how.
+shmmax is a kernel parameter that defines how much shared memory a program can be allocated. You may need to increase or decrease this limit for a program to work or for security. This guide will show you how.
 == What you need to know ==
@@ Line 8: / Line 8: @@
 # Open KWrite.
-# Goto 'File' and then 'Open'.
+# Go to 'File' and then 'Open'.
 # You'll need to click 'root' down the left hand side (usually the red folder). Navigate to <code>etc</code>. You then need to find the file <code>sysctl.conf</code> (The full path to the file is <code>/etc/sysctl.conf</code>).
 # Click at the bottom of the typable area, ready to type.
-# Type or copy and paste the following statement: <code>kernel.shmmax = <value></code> (<code><value></code> needs replacing with the amount of shared memory you want each program to be allowed. This value is in '''bytes'''.
+# Type or copy and paste the following statement: <code>kernel.shmmax = <value></code> (<code><value></code> needs replacing with the amount of shared memory you want each program to be allowed. This value is in '''bytes''').
 # Once you have the statement in place, click the 'Save' button across the top toolbar (usually with a floppy disk icon). The title at the top of the window should not read '(Modified)'.
 # Close KWrite and restart your system.