linux-kernel - Re: unresponsiveness on linux desktop during file copy

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Date:	Sun, 17 May 2009 18:33:48 +0530
From:	Satish Eerpini <eerpini@...il.com>
To:	Wu Fengguang <fengguang.wu@...el.com>
Cc:	Rik van Riel <riel@...hat.com>, Ray Lee <ray-lk@...rabbit.org>,
	Christoph Lameter <cl@...ux-foundation.org>,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: unresponsiveness on linux desktop during file copy

> Or maybe the time is spent in gnome-terminal or bash?
> What if you change them to xterm and dash?
>
ok here you go , I ran "strace -o log -tt clear " on xterm and dash :

"log "

18:31:02.162301 execve("/usr/bin/clear", ["clear"], [/* 49 vars */]) = 0
18:31:02.163558 brk(0)                  = 0x943b000
18:31:02.163668 access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No
such file or directory)
18:31:02.163779 open("/etc/ld.so.cache", O_RDONLY) = 3
18:31:02.163858 fstat64(3, {st_mode=S_IFREG|0644, st_size=140850, ...}) = 0
18:31:02.163975 mmap2(NULL, 140850, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb7f16000
18:31:02.164036 close(3)                = 0
18:31:02.164122 open("/lib/libtinfo.so.5", O_RDONLY) = 3
18:31:02.164206 read(3,
"\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\340\332\355\0074\0\0\0D"...,
512) = 512
18:31:02.164303 fstat64(3, {st_mode=S_IFREG|0755, st_size=98036, ...}) = 0
18:31:02.164411 mmap2(NULL, 4096, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7f15000
18:31:02.164481 mmap2(0x7ed8000, 99928, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7ed8000
18:31:02.164545 mmap2(0x7eee000, 12288, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x15) = 0x7eee000
18:31:02.164620 close(3)                = 0
18:31:02.164693 open("/lib/libc.so.6", O_RDONLY) = 3
18:31:02.164777 read(3,
"\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0@xk\0004\0\0\0P"...,
512) = 512
18:31:02.164862 fstat64(3, {st_mode=S_IFREG|0755, st_size=1809672, ...}) = 0
18:31:02.164972 mmap2(0x6a1000, 1521232, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x6a1000
18:31:02.165035 mmap2(0x80f000, 12288, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x16e) = 0x80f000
18:31:02.165123 mmap2(0x812000, 9808, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x812000
18:31:02.165187 close(3)                = 0
18:31:02.165265 mmap2(NULL, 4096, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7f14000
18:31:02.165327 set_thread_area({entry_number:-1 -> 6,
base_addr:0xb7f146c0, limit:1048575, seg_32bit:1, contents:0,
read_exec_only:0, limit_in_pages:1, seg_not_present:0, useable:1}) = 0
18:31:02.165412 mprotect(0x80f000, 8192, PROT_READ) = 0
18:31:02.165472 mprotect(0x69d000, 4096, PROT_READ) = 0
18:31:02.165532 munmap(0xb7f16000, 140850) = 0
18:31:02.165635 ioctl(1, SNDCTL_TMR_TIMEBASE or TCGETS, {B38400 opost
isig icanon echo ...}) = 0
18:31:02.165816 brk(0)                  = 0x943b000
18:31:02.165870 brk(0x945c000)          = 0x945c000
18:31:02.165966 stat64("/root/.terminfo", 0xbfc37e14) = -1 ENOENT (No
such file or directory)
18:31:02.166040 stat64("/etc/terminfo", {st_mode=S_IFDIR|0755,
st_size=4096, ...}) = 0
18:31:02.166181 access("/etc/terminfo/x/xterm", R_OK) = -1 ENOENT (No
such file or directory)
18:31:02.166256 stat64("/usr/share/terminfo", {st_mode=S_IFDIR|0755,
st_size=4096, ...}) = 0
18:31:02.166379 access("/usr/share/terminfo/x/xterm", R_OK) = 0
18:31:02.166454 open("/usr/share/terminfo/x/xterm", O_RDONLY|O_LARGEFILE) = 3
18:31:02.166531 read(3, "\32\0010\0&\0\17\0\235\1F\5xterm|xterm
terminal "..., 4097) = 3220
18:31:02.166646 close(3)                = 0
18:31:02.166709 ioctl(1, SNDCTL_TMR_TIMEBASE or TCGETS, {B38400 opost
isig icanon echo ...}) = 0
18:31:02.166788 ioctl(1, SNDCTL_TMR_TIMEBASE or TCGETS, {B38400 opost
isig icanon echo ...}) = 0
18:31:02.166866 ioctl(1, SNDCTL_TMR_TIMEBASE or TCGETS, {B38400 opost
isig icanon echo ...}) = 0
18:31:02.166941 ioctl(1, TIOCGWINSZ, {ws_row=24, ws_col=80,
ws_xpixel=499, ws_ypixel=316}) = 0
18:31:02.167010 fstat64(1, {st_mode=S_IFCHR|0620, st_rdev=makedev(136,
0), ...}) = 0
18:31:02.167134 mmap2(NULL, 4096, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7f38000
18:31:02.167205 write(1, "\33[H\33[2J"..., 7) = 7
18:31:02.167613 exit_group(0)           = ?

Satish
-- 
http://satish.playdrupal.com

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