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Posted to bugs@httpd.apache.org by bu...@apache.org on 2021/03/19 05:39:18 UTC
[Bug 65196] New: All child processes are temporarily terminated.
https://bz.apache.org/bugzilla/show_bug.cgi?id=65196
Bug ID: 65196
Summary: All child processes are temporarily terminated.
Product: Apache httpd-2
Version: 2.4.46
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P2
Component: mpm_worker
Assignee: bugs@httpd.apache.org
Reporter: motoda.hironori@fujitsu.com
Target Milestone: ---
In the following environment where multiple Listen directives are defined, 6
requests are received at the same time, and after HTTP request processing is
completed, all child processes are temporarily terminated. ThreadsPerChild is
set to 1 for ease of explanation.
httpd.conf:
----------------------------------------------
Listen 80
Listen 8080
ServerLimit 50
StartServers 5
MinSpareThreads 5
MaxSpareThreads 10
ThreadsPerChild 1
MaxRequestWorkers 50
MaxConnectionsPerChild 0
----------------------------------------------
The process status is shown in the output of the following command.
# pstree -p `cat /opt/apache24/logs/httpd.pid`
Isn't it a bug that all child processes are temporarily terminated in (3)?
We have confirmed that the listener thread does not terminate immediately in
the termination process of the child process.
If it's not a bug, please tell me why.
(1) It is in the state where httpd is started.
----------------------------------------------
Tue Mar 16 13:38:09 JST 2021
httpd(4035)-+-httpd(4036)-+-{httpd}(4046)
| `-{httpd}(4047)
|-httpd(4037)-+-{httpd}(4048)
| `-{httpd}(4049)
|-httpd(4038)-+-{httpd}(4050)
| `-{httpd}(4051)
|-httpd(4039)-+-{httpd}(4052)
| `-{httpd}(4053)
`-httpd(4040)-+-{httpd}(4054)
`-{httpd}(4055)
----------------------------------------------
(2) 6 requests are being processed.
----------------------------------------------
Tue Mar 16 13:38:26 JST 2021
httpd(4035)-+-httpd(4036)-+-{httpd}(4046)
| `-{httpd}(4047)
|-httpd(4037)-+-{httpd}(4048)
| `-{httpd}(4049)
|-httpd(4038)-+-{httpd}(4050)
| `-{httpd}(4051)
|-httpd(4039)-+-{httpd}(4052)
| `-{httpd}(4053)
|-httpd(4040)-+-{httpd}(4054)
| `-{httpd}(4055)
|-httpd(4101)-+-{httpd}(4103)
| `-{httpd}(4104)
|-httpd(4109)-+-{httpd}(4113)
| `-{httpd}(4114)
|-httpd(4110)-+-{httpd}(4115)
| `-{httpd}(4116)
|-httpd(4121)-+-{httpd}(4133)
| `-{httpd}(4134)
|-httpd(4122)-+-{httpd}(4135)
| `-{httpd}(4136)
|-httpd(4123)-+-{httpd}(4129)
| `-{httpd}(4130)
`-httpd(4124)-+-{httpd}(4131)
`-{httpd}(4132)
----------------------------------------------
(3) The following is the state transition after the request processing is
completed.
----------------------------------------------
Tue Mar 16 13:38:38 JST 2021
httpd(4035)-+-httpd(4036)
|-httpd(4037)
|-httpd(4038)
|-httpd(4039)
|-httpd(4040)
|-httpd(4101)
|-httpd(4110)
|-httpd(4121)
|-httpd(4122)
|-httpd(4123)
`-httpd(4124)
----------------------------------------------
Tue Mar 16 13:38:39 JST 2021
httpd(4035)---httpd(4213)-+-{httpd}(4215)
`-{httpd}(4216)
----------------------------------------------
Tue Mar 16 13:38:40 JST 2021
httpd(4035)-+-httpd(4213)-+-{httpd}(4215)
| `-{httpd}(4216)
|-httpd(4221)-+-{httpd}(4225)
| `-{httpd}(4226)
`-httpd(4222)-+-{httpd}(4227)
`-{httpd}(4228)
----------------------------------------------
Tue Mar 16 13:38:41 JST 2021
httpd(4035)-+-httpd(4213)-+-{httpd}(4215)
| `-{httpd}(4216)
|-httpd(4221)-+-{httpd}(4225)
| `-{httpd}(4226)
|-httpd(4222)-+-{httpd}(4227)
| `-{httpd}(4228)
|-httpd(4233)-+-{httpd}(4245)
| `-{httpd}(4246)
|-httpd(4234)-+-{httpd}(4247)
| `-{httpd}(4248)
|-httpd(4235)-+-{httpd}(4241)
| `-{httpd}(4242)
`-httpd(4236)-+-{httpd}(4243)
`-{httpd}(4244)
----------------------------------------------
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[Bug 65196] All child processes are temporarily terminated.
Posted by bu...@apache.org.
https://bz.apache.org/bugzilla/show_bug.cgi?id=65196
Eric Covener <co...@gmail.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |NEEDINFO
--- Comment #2 from Eric Covener <co...@gmail.com> ---
(In reply to Hironori Motoda from comment #1)
> Hello,
> Has anyone been assigned for this bug report?
This is a volunteer project. Maybe if you post your full httpd.conf, apachectl
-V and errorlog w/ loglevel trace8 someone will be able to respond.
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[Bug 65196] All child processes are temporarily terminated.
Posted by bu...@apache.org.
https://bz.apache.org/bugzilla/show_bug.cgi?id=65196
Hironori Motoda <mo...@fujitsu.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |motoda.hironori@fujitsu.com
--- Comment #3 from Hironori Motoda <mo...@fujitsu.com> ---
Created attachment 37816
--> https://bz.apache.org/bugzilla/attachment.cgi?id=37816&action=edit
httpd.conf, errorlog, and pstree execution results
> This is a volunteer project. Maybe if you post your full httpd.conf, apachectl
> -V and errorlog w/ loglevel trace8 someone will be able to respond.
Attach httpd.conf, errorlog, and pstree execution results.
The result of apachectl -V is as follows.
----
# /opt/apache24/bin/apachectl -V
Server version: Apache/2.4.46 (Unix)
Server built: Apr 19 2021 10:44:43
Server's Module Magic Number: 20120211:93
Server loaded: APR 1.7.0, APR-UTIL 1.6.1
Compiled using: APR 1.7.0, APR-UTIL 1.6.1
Architecture: 64-bit
Server MPM: worker
threaded: yes (fixed thread count)
forked: yes (variable process count)
Server compiled with....
-D APR_HAS_SENDFILE
-D APR_HAS_MMAP
-D APR_HAVE_IPV6 (IPv4-mapped addresses enabled)
-D APR_USE_PROC_PTHREAD_SERIALIZE
-D APR_USE_PTHREAD_SERIALIZE
-D SINGLE_LISTEN_UNSERIALIZED_ACCEPT
-D APR_HAS_OTHER_CHILD
-D AP_HAVE_RELIABLE_PIPED_LOGS
-D DYNAMIC_MODULE_LIMIT=256
-D HTTPD_ROOT="/opt/apache24"
-D SUEXEC_BIN="/opt/apache24/bin/suexec"
-D DEFAULT_PIDLOG="logs/httpd.pid"
-D DEFAULT_SCOREBOARD="logs/apache_runtime_status"
-D DEFAULT_ERRORLOG="logs/error_log"
-D AP_TYPES_CONFIG_FILE="conf/mime.types"
-D SERVER_CONFIG_FILE="conf/httpd.conf"
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[Bug 65196] All child processes are temporarily terminated.
Posted by bu...@apache.org.
https://bz.apache.org/bugzilla/show_bug.cgi?id=65196
--- Comment #1 from Hironori Motoda <mo...@fujitsu.com> ---
Hello,
Has anyone been assigned for this bug report?
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[Bug 65196] All child processes are temporarily terminated.
Posted by bu...@apache.org.
https://bz.apache.org/bugzilla/show_bug.cgi?id=65196
Christophe JAILLET <ch...@wanadoo.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEEDINFO |NEW
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[Bug 65196] All child processes are temporarily terminated.
Posted by bu...@apache.org.
https://bz.apache.org/bugzilla/show_bug.cgi?id=65196
--- Comment #4 from Hironori Motoda <mo...@fujitsu.com> ---
Hello,
I have attached the requested information as a zip file, so please reply.
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