🚀 go-pugleaf

Dimitri Maziuk (dima@eris.dev.null) wrote:
: Bryan Palmer wrote:
: > Just a quickie for a linux guru. Is there a max swap partition size?
: > Also, is there a max hard disk size?

: Yes to both.  AFAIK, in linux-1.2.13 a swap partition or file 
: could hold 4086*8-1 memory pages of 4 kb.  I seem to remember 
: that number of swap files/partitions was then limited to 64.  

So, 128MB per partition, for a grand slam (in 64 parititions) of
8 gigabytes. How terribly sad and limiting... (-:

: Of course it's different on 64 bit boxes -- I don't own an Alpha :-( 
: but page size on that is 8 kb.

Uh, twice as many bits means about 1E10 pages of 8KB? If so, gives
8.8E13 (80-odd terabytes) per partition, 5.6E15 bytes total...

: I don't remember what's max filesystem size for ext2, max file
: size is 2 Gb I think (but they're working on it.)  Also, there 
: should be a limit on max number of mounted filesystems...  
: wild guess: say, 1.83E8 filesystems and half that many files
: of 2 Gb in a filesystem on x86, if we use unsigned int and all
: files are in the root directory...

Ummm, one would want all of the above swap space (and a goodly few
hundred meg of RAM) in order to cope with 200 million filesystems...


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