Charles Meo <charles....@ltx.com.au> wrote:
> Note that this disk is flat out writing ~100 KB/sec, using what appear to
> be 512b or 1k writes. The identical operation from the same tarball gets
> around 15MB/sec in the global zone. What on earth is going on here? How do
> I fix it?
Sun-tar and GNU-tar both unpack in small blocks by default.
Did you try star?
Star by default sets up a two process system with a shared memory in between
(called FIFO). This shared memory allows star to operate in larger block sizes.
Note that you may need to call "star -no-fsync ..." to get the maximum
unpack performance as star by default operated in a mode that allows to grant
that all files really have been unpacked to stable storage.
EMail:jo...@schily.isdn.cs.tu-berlin.de (home) Jörg Schilling D-13353 Berlin
joerg.schill...@fokus.fraunhofer.de (work) Blog:
URL: http://cdrecord.berlios.de/private/ ftp://ftp.berlios.de/pub/schily
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