MIRACLE LINUX
2009
2009813
Debug HacksYLUG(Linux Users Group)
/hyoshio
http://d.hatena.ne.jp/hyoshiok
http://blog.miraclelinux.com/yume/
[email protected]
http://twitter.com/hyoshiok
OSS
OSRDBMS
100K
100
10
100K1M
1001000
100
1M
1000
100
find -type f -name "*.[ch]"|wc
find -type f -name "*.[ch]"|xargs wc|grep total
doc
lib
test
README, INSTALL, COPYING,
(Docs)
ChangeLog
ChangeLog/Release Notes
Linux git/Subversion/CVS
Mailing List
Wiki
blog
Google
Mailing List
Bug database
emacs
gdb
cscope
(crash)
ruby
GNU Hello
http://savannah.gnu.org/projects/hello
$ git-clone git:// ()
README
- automake
- autoconf
- bison
- gettext
- git
- gperf
- gzip
- perl
- rsync
- tar
$ time git clone ssh:// ()
$ cd ruby
$ time autoconf
$ time ./configure
$ time make
$ time make test
$ git checkout -b trunk origin/trunk
$ autoconf
./configure
make -j4 miniruby
make
strace
ltrace
gdb
oprofile
make
make
gcc -g (
MakefileCFLAGS
cscope
emacsshell
strace
$ strace ruby -vexecve("/usr/local/bin/ruby", ["ruby", "-v"],
[/* 39 vars */]) = 0uname({sys="Linux",
node="asianux2.miraclelinux.com", ...}) = 0brk(0) =
0x976a000access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such
file or directory)open("/etc/ld.so.cache", O_RDONLY) = 3fstat64(3,
{st_mode=S_IFREG|0644, st_size=89946, ...}) = 0old_mmap(NULL,
89946, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb7fea000close(3) =
0open("/lib/libdl.so.2", O_RDONLY) = 3
gdb
http://savannah.gnu.org/projects/gdb
gdb
gcc -g
printf
gdb
run
bt
p
c s n
oprofile
# opcontrol --start
# opcontrol --stop
# opreport -l
http://oprofile.sourceforge.net/news/
oprofile
CPU: Core Solo / Duo, speed 2666.77 MHz (estimated)
Counted DCACHE_PEND_MISS events (Weighted cycles of L1 miss
outstanding) with
a unit mask of 0x00 (Weighted cycles) count 100000
vma samples % linenr info app name symbol name
000000000042be50 244787 33.2383 gc.c:1661 ruby os_each_obj
000000000042bfac 1 4.1e-04 gc.c:1599
000000000042bfb9 5 0.0020 gc.c:1599
000000000042bfbe 6 0.0025 gc.c:1599
000000000042bfd0 4862 1.9862 gc.c:1601
000000000042bfd3 228573 93.3763 gc.c:1601
000000000042bfd6 2698 1.1022 gc.c:1601
000000000042bfd8 250 0.1021 ruby.h:672
oprofile
$ time find -type f -name \ '*.[ch]' -or -name '*.cpp' \ -or
-name '*.cxx' | xargs \ egrep -l hogehoge
$ time grep -r \
include='*.[ch]' hogehoge .
hogehoge
cscope
http://cscope.sourceforge.net/
lxr
http://lxr.linux.no/
GNU GLOBAL
http://www.gnu.org/software/global/
ack-grep
cscope
$ time cscope-indexer -r
emacs
gdb
oprofile
Linux
LINUX
ISBN:487311313X
Linux2.6
ISBN:4797338261
ISBN:4839912653
Ruby
ISBN:4844317210(
http://i.loveruby.net/ja/rhg/
http://blog.miraclelinux.com/yume/
(524)
http://blog.miraclelinux.com/yume/2007/08/post_d6bd.html
99)
http://blog.miraclelinux.com/yume/2007/08/post_d3eb.html
http://blog.miraclelinux.com/yume/
/hyoshiok
http://d.hatena.ne.jp/hyoshiok/
2
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08/13/09
MIRACLE LINUX
2
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8
9
Ruby 1.8.5257197767
Linux 2.6.1816522680
MySQL 5.0.24a1795988463
??? ??? (???)2008/07/30, 09:21:45 /
??? ??? (???)2007/10/15, 21:13:50 /
ChangeLog
??? ??? (???)2007/10/15, 21:13:51 /
ChangeLogcscope
(gdb)straceoprofilestrace
??? ??? (???)2007/10/16, 09:49:57 /
