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From "Steven Roussey" <srous...@network54.com>
Subject Re: What is the source of this 'Thundering herd' redux?
Date Sun, 05 Jan 2003 21:18:05 GMT
> pstack should be able to find the symbols if you compile and link with -g

Yes, and ./configure with --without-execstrip helps quite a bit too... :)

Now, pstack simply segfaults.

	[root@morpheus root]# pstack 5922
	5922: /usr/local/apache/bin/httpd
	pstack signal received: Segmentation fault

Strace of pstack xxx ends like this:

...
read(3, "\1\0\0\0\3\0\0\0\0\0\0\0\0\0\0\0@H\5\0\260\0\0\0\0\0\0"..., 40) = 40
close(3)                                = 0
--- SIGSEGV (Segmentation fault) ---
rt_sigaction(SIGSEGV, {SIG_DFL}, {0x8048c20, [SEGV], SA_RESTART|0x4000000}, 8) = 0
write(2, "pstack signal received: Segmenta"..., 43pstack signal received: Segmentation fault
) = 43
ptrace(PTRACE_DETACH, 5922, 0, SIG_0)   = 0
munmap(0x40018000, 4096)                = 0
_exit(1)                                = ?
 
Any help would be greatly appreciated… ☺

Sincerely,
Steven Roussey
http://Network54.com/ 
 


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