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 == | + | == UBC Secondary Parameters == |
+ | === 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 == | + | === 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 == | + | === 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 == | + | === 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 == | + | === 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 == | + | === 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 == | + | === 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. | ||
+ | |||
+ | == Units == | ||
+ | {{Main|UBC parameter units}} | ||
== System-wide limits == | == System-wide limits == |