https://bz.apache.org/bugzilla/show_bug.cgi?id=62363
Bug ID: 62363
Summary: I want profile httpd, but some function can not be
analyzed by gprof
Product: Apache httpd-2
Version: 2.4.4
Hardware: PC
OS: Linux
Status: NEW
Severity: trivial
Priority: P2
Component: support
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
Created attachment 35922
--> https://bz.apache.org/bugzilla/attachment.cgi?id=35922&action=edit
The gmon file generated by gprof after i run -k graceful and -k stop
I want to use gprof to profile httpd. But seems not all functions are profiled.
How I do:
1.I install the httpd-2.4.4 from source code with:
CFLAGS+="-pg" ./configure --with-included-apr --with-mpm=prefork
2.After make & make install, I run httpd with
./bin/httpd -k start
and
./bin/httpd -k graceful
3.It successfully generate the gmon.out. Since this file is generate whenever
the process is terminated, so the code of doing shutting down should be
profiled. For example the function 'ap_mpm_pod_killpg' in /server/mpm-unix.c.(I
am very sure of it because when I add personal code in this function, it
executed successfully).
4.However, when I run
gprof ./bin/httpd gmon.out >report.txt
and open the 'report.txt'. The functions analyzed by gprof does **NOT** contain
'ap_mpm_pod_killpg'
5.The log is:
[Wed May 09 10:10:57.326904 2018] [mpm_prefork:notice] [pid 32256] AH00163:
Apache/2.4.4 (Unix) configured -- resuming normal operations
[Wed May 09 10:10:57.327019 2018] [core:notice] [pid 32256] AH00094:
Command line: './bin/httpd'
[Wed May 09 10:11:07.784181 2018] [mpm_prefork:notice] [pid 32256] AH00171:
Graceful restart requested, doing restart
_mcleanup: gmon.out: Permission denied
_mcleanup: gmon.out: Permission denied
_mcleanup: gmon.out: Permission denied
_mcleanup: gmon.out: Permission denied
_mcleanup: gmon.out: Permission denied
AH00558: httpd: Could not reliably determine the server's fully qualified
domain name, using 127.0.1.1. Set the 'ServerName' directive globally to
suppress this message
[Wed May 09 10:11:12.790487 2018] [mpm_prefork:notice] [pid 32256] AH00163:
Apache/2.4.4 (Unix) configured -- resuming normal operations
6. Did I made some mistake? Or it seems to related to permission issue?
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