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author | Astrid Malo <kess@apache.org> | 2005-08-22 23:40:16 +0200 |
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committer | Astrid Malo <kess@apache.org> | 2005-08-22 23:40:16 +0200 |
commit | c83b3be5cecc8844f6daf19656c493d2f2280216 (patch) | |
tree | a00b8b2c2d753511854c5ee93d42469dab106e16 /docs/manual/stopping.xml | |
parent | `build extraclean all` (extraclean just to make sure I got them all :-) (diff) | |
download | apache2-c83b3be5cecc8844f6daf19656c493d2f2280216.tar.xz apache2-c83b3be5cecc8844f6daf19656c493d2f2280216.zip |
some language changes and fixes
committed by Noirin Plunkett
git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@239255 13f79535-47bb-0310-9956-ffa450edef68
Diffstat (limited to 'docs/manual/stopping.xml')
-rw-r--r-- | docs/manual/stopping.xml | 28 |
1 files changed, 15 insertions, 13 deletions
diff --git a/docs/manual/stopping.xml b/docs/manual/stopping.xml index c630b8083a..fc9fd6adcc 100644 --- a/docs/manual/stopping.xml +++ b/docs/manual/stopping.xml @@ -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 @@ -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 |