Re: XFS and journalling filesystems

[Ralf Baechle <ralf@uni-koblenz.de>]

On Sat, May 29, 1999 at 06:48:19AM -0400, Vilain, Sam wrote:

> As a dangerous rule of thumb, LOC ~ code size.  More code size = bigger
> kernel = less (buffercache|user memory).  <flamesuit>This is a fear of Linux
> kernel developers - Linux ending up as slow as say, Solaris on low end
> machines (even if it kicks butt on 6144-way SMP).</flamesuit>

Nobody builds 6144-way SMPs, not Sun nor somebody else.  The SMP paradigm
just doesn't scale that far.

> Numbers are often good in arguments like this.  ie, how big is the ext2fs
> module under Linux/MIPS, compared to the xfs module under Irix?  [Comparing
> with Linux/i386 should probably be avoided, because i386 code is (generally)
> more instructions/word, even if you need a few extra million transistors to
> decode it :)].

[ralf@lappi linux-sgi]$ mips-linux-size fs/ext2/ext2.o
   text	   data	    bss	    dec	    hex	filename
  60080	    496	   1024	  61600	   f0a0	fs/ext2/ext2.o
[ralf@lappi linux-sgi]$ 

The archive /usr/cpu/sysgen/IP22boot/xfs.a of IRIX 6.2 has in total a
.text size of 274864.  That's 32 bit code btw.

  Ralf

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