On Wed, 17 May 2006 16:53:35 +0200, linux cbon said:
> It is already happening today with X, because :
> X runs as root - ouch.
> X can write into kernel memory - ouch.
> X can mess with clocks - ouch.
> X can mess with PCI bus - ouch.
You're confusing "X" with "One misdesigned implementation of X". If
you actually checked the list archives, you'll see that there are steps
underway to drastically reduce the amount of stuff that X does...
> We dont need 2 kernels like today.
> All "dangerous code" should be in kernel.
Erm. No. Dangerous code should remain out in userspace where it can't
cause as much damage.
> > Do you really want to put all that complexity into
> > the kernel?
>
> Kernel is already complex, that wouldnt affect it.
% size /usr/src/linux-2.6.17-rc4-mm1/vmlinux /lib/modules/2.6.17-rc4-mm1/kernel/drivers/video/nvidia.ko
text data bss dec hex filename
3681149 893719 316992 4891860 4aa4d4 /usr/src/linux-2.6.17-rc4-mm1/vmlinux
2910736 1299276 10388 4220400 4065f0 /lib/modules/2.6.17-rc4-mm1/kernel/drivers/video/nvidia.ko
Wow, that one module is 75% of the size of my kernel...
OK.. Maybe I run a lot of modules?
% lsmod | grep -v nvidia | wc
43 143 1793
% lsmod | grep -v nvidia | awk '{sum +=$2} END {print sum}'
627006
Nope, only another 600K or so. Puts us up to 4.2M or so kernel, plus 3M of nvidia..
But wait, there's more. Let's look at the X server and all its shared libs.
# size `lsof -p 2087 | egrep 'mem.*REG' | awk '{print $9}'`
text data bss dec hex filename
32711 448 480 33639 8367 /lib/libnss_files-2.4.90.so
28347 668 8 29023 715f /usr/lib/xorg/modules/libramdac.so
242306 2396 44 244746 3bc0a /usr/lib/xorg/modules/libfb.so
130662 1848 332 132842 206ea /usr/lib/xorg/modules/extensions/libextmod.so
1087 160 32 1279 4ff /usr/lib/tls/libnvidia-tls.so.1.0.8756
7983042 127036 17376 8127454 7c03de /usr/lib/libGLcore.so.1.0.8756
9457 1524 60 11041 2b21 /usr/lib/xorg/modules/input/kbd_drv.so
38096 3352 16 41464 a1f8 /usr/lib/xorg/modules/input/mouse_drv.so
578630 73544 3968 656142 a030e /usr/lib/xorg/modules/extensions/libglx.so.1.0.8756
219189 89192 4 308385 4b4a1 /usr/lib/xorg/modules/libpcidata.so
434782 11352 4 446138 6ceba /usr/lib/libfreetype.so.6.3.8
1230342 10368 11312 1252022 131ab6 /lib/libc-2.4.90.so
43260 420 292 43972 abc4 /lib/libgcc_s-4.1.0-20060512.so.1
141605 336 64 142005 22ab5 /lib/libm-2.4.90.so
71955 704 4 72663 11bd7 /usr/lib/libz.so.1.2.3
17096 368 4 17468 443c /usr/lib/libXdmcp.so.6.0.0
16794 3776 1248 21818 553a /usr/lib/libfontenc.so.1.0.0
6550 368 12 6930 1b12 /usr/lib/libXau.so.6.0.0
439854 25036 47916 512806 7d326 /usr/lib/libXfont.so.1.4.1
6814 400 48 7262 1c5e /lib/libdl-2.4.90.so
154483 2376 1088 157947 268fb /usr/lib/liblbxutil.so.1.0.0
27966 608 1064 29638 73c6 /usr/lib/xorg/modules/linux/libdrm.so
28409 908 36 29353 72a9 /usr/lib/xorg/modules/extensions/libdri.so
1541 396 4 1941 795 /usr/lib/xorg/modules/fonts/libbitmap.so
99149 2392 192 101733 18d65 /lib/ld-2.4.90.so
Totalling it up:
11984127 359976 85608 12429711
Yowza. 124 *meg*.
> But that would greatly simplify the whole system.
Yeah, adding 124 meg to a 4.2M kernel will simplify it...
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