diff options
| -rw-r--r-- | doc/src/sgml/runtime.sgml | 30 |
1 files changed, 15 insertions, 15 deletions
diff --git a/doc/src/sgml/runtime.sgml b/doc/src/sgml/runtime.sgml index 53916475861..eff4c1aa9a4 100644 --- a/doc/src/sgml/runtime.sgml +++ b/doc/src/sgml/runtime.sgml @@ -1,5 +1,5 @@ <!-- -$Header: /cvsroot/pgsql/doc/src/sgml/runtime.sgml,v 1.32 2000/11/08 17:57:45 petere Exp $ +$Header: /cvsroot/pgsql/doc/src/sgml/runtime.sgml,v 1.33 2000/11/10 16:32:09 tgl Exp $ --> <Chapter Id="runtime"> @@ -1217,12 +1217,12 @@ env PGOPTIONS='-c geqo=off' psql limits of the IPC resources then the postmaster will refuse to start up and should leave a marginally instructive error message about which problem was encountered and what needs to be done - about it. The relevant kernel parameters have a relatively - consistent nomenclature across systems; <xref + about it. The relevant kernel parameters are named + consistently across different systems; <xref linkend="sysvipc-parameters"> gives an overview. The methods to set them, however, vary; suggestions for some platforms are given - below. Be aware, however, that you will have to reboot your - machine at best, or possibly recompile the kernel, to change these + below. Be aware that you will have to reboot your + machine at least, possibly even recompile the kernel, to change these settings. </para> @@ -1255,7 +1255,7 @@ env PGOPTIONS='-c geqo=off' psql <row> <entry><varname>SHMSEG</></> <entry>Maximum number of shared memory segments per process</> - <entry>Must be at least 3, but the default is much higher.</> + <entry>must be at least 3, but the default is much higher</> </row> <row> @@ -1267,13 +1267,13 @@ env PGOPTIONS='-c geqo=off' psql <row> <entry><varname>SEMMNI</></> <entry>Maximum number of semaphore identifiers (i.e., sets)</> - <entry>>= ceil(max_connections % 16)</> + <entry>>= ceil(max_connections / 16)</> </row> <row> <entry><varname>SEMMNS</></> <entry>Maximum number of semaphores system-wide</> - <entry>number of allowed connections, rounded up to multiple of 16</> + <entry>max_connections rounded up to multiple of 16, + room for other applications</> </row> <row> @@ -1337,7 +1337,7 @@ env PGOPTIONS='-c geqo=off' psql The parameter <varname>SEMMNI</> determines the limit on the number of semaphore sets that can exist on the system at one time. Hence this parameter must be at least - <literal>ceil(max_connections % 16)</>. Lowering the number of + <literal>ceil(max_connections / 16)</>. Lowering the number of allowed connections is a temporary workaround for failures, which are usually confusingly worded <quote><errorname>No space left on device</></>, from the function <function>semget()</>. @@ -1351,7 +1351,7 @@ env PGOPTIONS='-c geqo=off' psql semaphores needs an entry. When a semaphore set is freed it is either added to an existing entry that is adjacent to the freed block or it is registered under a new map entry. If the map is - full, the freed semaphores gets lost (until reboot). Fragmentation + full, the freed semaphores get lost (until reboot). Fragmentation of the semaphore space could therefore over time lead to less available semaphores than there should be. </para> @@ -1363,9 +1363,9 @@ env PGOPTIONS='-c geqo=off' psql </para> <para> - Various settings related to <quote>semaphore undo</>, such as - <varname>SEMMNU</> and <varname>SEMUME</>, are not of relevance - with <productname>Postgres</>. + Various other settings related to <quote>semaphore undo</>, such as + <varname>SEMMNU</> and <varname>SEMUME</>, are not of concern + for <productname>Postgres</>. </para> @@ -1386,7 +1386,7 @@ env PGOPTIONS='-c geqo=off' psql <programlisting> /sys/sys/shm.h:69:#define SHMMAXPGS 1024 /* max hardware pages... */ </programlisting> - The default setting of 1024 is for a maximum of 4 MB of shared + The default setting of 1024 provides a maximum of 4 MB of shared memory. </para> </formalpara> @@ -1457,7 +1457,7 @@ options "SEMMNU=120" to be enabled when the kernel is compiled. (They are by default.) The maximum size of shared memory is determined by the option <varname>SHMMAXPGS</> (in pages). The following - shows an example on how to set the various parameters: + shows an example of how to set the various parameters: <programlisting> options SYSVSHM options SHMMAXPGS=4096 |