Loading docs/manual/install.xml +9 −8 Changes for docs/manual/install.xml: 9 added lines, 8 removed lines. Original line number Diff line number Diff line Loading @@ -152,14 +152,15 @@ <dd>For some of the support scripts like <program> apxs</program> or <program>dbmmanage</program> (which are written in Perl) the Perl 5 interpreter is required (versions 5.003 or newer are sufficient). If no such interpreter is found by the <program>configure</program> script there is no harm. Of course, you still can build and install Apache 2.0. Only those support scripts cannot be used. If you have multiple Perl interpreters installed (perhaps a Perl 4 from the vendor and a Perl 5 from your own), then it is recommended to use the <code>--with-perl</code> option (see below) to make sure the correct one is selected by <program>configure</program>.</dd> 5.003 or newer are sufficient). If you have multiple Perl interpreters (for example, a systemwide install of Perl 4, and your own install of Perl 5), you are advised to use the <code>--with-perl</code> option (see below) to make sure the correct one is used by <program>configure</program>. If no Perl 5 interpreter is found by the <program>configure</program> script, you will not be able to use the affected support scripts. Of course, you will still be able to build and use Apache 2.0.</dd> </dl> </section> Loading docs/manual/stopping.xml +15 −13 Changes for docs/manual/stopping.xml: 15 added lines, 13 removed lines. Original line number Diff line number Diff line Loading @@ -119,9 +119,10 @@ been created, then create enough to pick up the slack. Hence the code tries to maintain both the number of children appropriate for the current load on the server, and respect your wishes with the <directive>StartServers</directive> parameter.</p> <directive module="mpm_common">StartServers</directive> parameter.</p> <p>Users of the <module>mod_status</module> <p>Users of <module>mod_status</module> will notice that the server statistics are <strong>not</strong> set to zero when a <code>USR1</code> is sent. The code was written to both minimize the time in which the server is unable Loading Loading @@ -188,26 +189,27 @@ error. See above for a method of avoiding this.</note> <section id="race"><title>Appendix: signals and race conditions</title> <p>Prior to Apache 1.2b9 there were several <em>race conditions</em> involving the restart and die signals (a simple description of race condition is: a time-sensitive problem, as in if something happens at just the wrong time it won't behave as expected). For those architectures that have the "right" conditions</em> involving the restart and die signals (a simply put, a race condition is a time-sensitive problem - if something happens at just the wrong time or things happen in the wrong order, undesired behaviour will result. If the same thing happens at the right time, all will be well). For those architectures that have the "right" feature set we have eliminated as many as we can. But it should be noted that there still do exist race conditions on certain be noted that race conditions do still exist on certain architectures.</p> <p>Architectures that use an on disk <directive module="mpm_common">ScoreBoardFile</directive> have the potential to corrupt their scoreboards. This can result in the "bind: <p>Architectures that use an on-disk <directive module="mpm_common">ScoreBoardFile</directive> can potentially have their scoreboards corrupted. This can result in the "bind: Address already in use" (after <code>HUP</code>) or "long lost child came home!" (after <code>USR1</code>). The former is a fatal error, while the latter just causes the server to lose a scoreboard slot. So it might be advisable to use graceful scoreboard slot. So it may be advisable to use graceful restarts, with an occasional hard restart. These problems are very difficult to work around, but fortunately most architectures do not require a scoreboard file. See the <directive module="mpm_common">ScoreBoardFile</directive> documentation for a architecture uses it.</p> module="mpm_common">ScoreBoardFile</directive> documentation for architecture which uses it.</p> <p>All architectures have a small race condition in each child involving the second and subsequent requests on a persistent Loading Loading
docs/manual/install.xml +9 −8 Changes for docs/manual/install.xml: 9 added lines, 8 removed lines. Original line number Diff line number Diff line Loading @@ -152,14 +152,15 @@ <dd>For some of the support scripts like <program> apxs</program> or <program>dbmmanage</program> (which are written in Perl) the Perl 5 interpreter is required (versions 5.003 or newer are sufficient). If no such interpreter is found by the <program>configure</program> script there is no harm. Of course, you still can build and install Apache 2.0. Only those support scripts cannot be used. If you have multiple Perl interpreters installed (perhaps a Perl 4 from the vendor and a Perl 5 from your own), then it is recommended to use the <code>--with-perl</code> option (see below) to make sure the correct one is selected by <program>configure</program>.</dd> 5.003 or newer are sufficient). If you have multiple Perl interpreters (for example, a systemwide install of Perl 4, and your own install of Perl 5), you are advised to use the <code>--with-perl</code> option (see below) to make sure the correct one is used by <program>configure</program>. If no Perl 5 interpreter is found by the <program>configure</program> script, you will not be able to use the affected support scripts. Of course, you will still be able to build and use Apache 2.0.</dd> </dl> </section> Loading
docs/manual/stopping.xml +15 −13 Changes for docs/manual/stopping.xml: 15 added lines, 13 removed lines. Original line number Diff line number Diff line Loading @@ -119,9 +119,10 @@ been created, then create enough to pick up the slack. Hence the code tries to maintain both the number of children appropriate for the current load on the server, and respect your wishes with the <directive>StartServers</directive> parameter.</p> <directive module="mpm_common">StartServers</directive> parameter.</p> <p>Users of the <module>mod_status</module> <p>Users of <module>mod_status</module> will notice that the server statistics are <strong>not</strong> set to zero when a <code>USR1</code> is sent. The code was written to both minimize the time in which the server is unable Loading Loading @@ -188,26 +189,27 @@ error. See above for a method of avoiding this.</note> <section id="race"><title>Appendix: signals and race conditions</title> <p>Prior to Apache 1.2b9 there were several <em>race conditions</em> involving the restart and die signals (a simple description of race condition is: a time-sensitive problem, as in if something happens at just the wrong time it won't behave as expected). For those architectures that have the "right" conditions</em> involving the restart and die signals (a simply put, a race condition is a time-sensitive problem - if something happens at just the wrong time or things happen in the wrong order, undesired behaviour will result. If the same thing happens at the right time, all will be well). For those architectures that have the "right" feature set we have eliminated as many as we can. But it should be noted that there still do exist race conditions on certain be noted that race conditions do still exist on certain architectures.</p> <p>Architectures that use an on disk <directive module="mpm_common">ScoreBoardFile</directive> have the potential to corrupt their scoreboards. This can result in the "bind: <p>Architectures that use an on-disk <directive module="mpm_common">ScoreBoardFile</directive> can potentially have their scoreboards corrupted. This can result in the "bind: Address already in use" (after <code>HUP</code>) or "long lost child came home!" (after <code>USR1</code>). The former is a fatal error, while the latter just causes the server to lose a scoreboard slot. So it might be advisable to use graceful scoreboard slot. So it may be advisable to use graceful restarts, with an occasional hard restart. These problems are very difficult to work around, but fortunately most architectures do not require a scoreboard file. See the <directive module="mpm_common">ScoreBoardFile</directive> documentation for a architecture uses it.</p> module="mpm_common">ScoreBoardFile</directive> documentation for architecture which uses it.</p> <p>All architectures have a small race condition in each child involving the second and subsequent requests on a persistent Loading