Editing UBC secondary parameters

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to the [[UBC primary parameters|primary ones]] and can't be configured arbitrarily.
 
to the [[UBC primary parameters|primary ones]] and can't be configured arbitrarily.
  
== kmemsize ==
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== UBC Secondary Parameters ==
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=== kmemsize ===
 
Size of unswappable memory in bytes, allocated by the operating system kernel.
 
Size of unswappable memory in bytes, allocated by the operating system kernel.
  
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This total limit is discussed in [[UBC systemwide configuration#“Low memory”|“low memory”]].
 
This total limit is discussed in [[UBC systemwide configuration#“Low memory”|“low memory”]].
  
== tcpsndbuf ==
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=== tcpsndbuf ===
 
The total size of buffers used to send data over TCP network connections.
 
The total size of buffers used to send data over TCP network connections.
 
These socket buffers reside in [[UBC systemwide configuration#“Low memory”|“low memory”]].
 
These socket buffers reside in [[UBC systemwide configuration#“Low memory”|“low memory”]].
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This total limit is discussed in [[UBC systemwide configuration#“Low memory”|“low memory”]].
 
This total limit is discussed in [[UBC systemwide configuration#“Low memory”|“low memory”]].
  
== tcprcvbuf ==
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=== tcprcvbuf ===
 
The total size of buffers used to temporary store the data coming from TCP network connections.
 
The total size of buffers used to temporary store the data coming from TCP network connections.
 
These socket buffers also reside in [[UBC systemwide configuration#“Low memory”|“low memory”]].
 
These socket buffers also reside in [[UBC systemwide configuration#“Low memory”|“low memory”]].
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This total limit is discussed in [[UBC systemwide configuration#“Low memory”|“low memory”]].
 
This total limit is discussed in [[UBC systemwide configuration#“Low memory”|“low memory”]].
  
== othersockbuf ==
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=== othersockbuf ===
 
The total size of buffers used by local (UNIX-domain) connections between
 
The total size of buffers used by local (UNIX-domain) connections between
 
processes inside the system (such as connections to a local database server)
 
processes inside the system (such as connections to a local database server)
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This total limit is discussed in [[UBC systemwide configuration#“Low memory”|“low memory”]].
 
This total limit is discussed in [[UBC systemwide configuration#“Low memory”|“low memory”]].
  
== dgramrcvbuf ==
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=== dgramrcvbuf ===
 
The total size of buffers used to temporary store the incoming packets of UDP and
 
The total size of buffers used to temporary store the incoming packets of UDP and
 
other datagram protocols.
 
other datagram protocols.
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This total limit is discussed in [[UBC systemwide configuration#“Low memory”|“low memory”]].
 
This total limit is discussed in [[UBC systemwide configuration#“Low memory”|“low memory”]].
  
== oomguarpages ==
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=== oomguarpages ===
 
The guaranteed amount of memory for the case the memory is “over-booked”
 
The guaranteed amount of memory for the case the memory is “over-booked”
 
(out-of-memory kill guarantee).
 
(out-of-memory kill guarantee).
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service and system daemons may be killed.
 
service and system daemons may be killed.
  
== privvmpages ==
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=== privvmpages ===
 
Memory allocation limit in [[Memory_page|pages]] (which are typically 4096 bytes in size).
 
Memory allocation limit in [[Memory_page|pages]] (which are typically 4096 bytes in size).
  
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There's also an article describing how [[user pages accounting]] works.
 
There's also an article describing how [[user pages accounting]] works.
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== Units ==
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{{Main|UBC parameter units}}
  
 
== System-wide limits ==
 
== System-wide limits ==

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