Re: Decompression speed: zip vs lzo

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To: Nicolas Pitre <nico@...>
Cc: Linus Torvalds <torvalds@...>, Pierre Habouzit <madcoder@...>, Git Mailing List <git@...>, Johannes Schindelin <Johannes.Schindelin@...>, Marco Costalba <mcostalba@...>, Junio C Hamano <gitster@...>
Date: Friday, January 11, 2008 - 11:06 pm

Nicolas Pitre wrote:

Agree.


Disagree.  Going as much as twice as fast for many history operations
for 10% added space sounds like a clear win to me.  We can easily agree
to disagree though - making it a disabled by default config option
allows the user to unroll their packs if they want.


What do you mean?  1 second waiting is far better than 2 seconds
waiting.  And the mmap optimizations have not even begun yet - that
could result in boosts from zero-copy, such as a lighter VM footprint.


This is an awesome boost!  Everything feels snappier already :)

maia:~/src/perl.clean$ time git-log | LANG=C wc
 288927  894027 8860916

real    0m0.839s
user    0m0.824s
sys     0m0.144s
maia:~/src/perl.clean$ cd ../perl.clean.loose/
maia:~/src/perl.clean.loose$ time git-log | LANG=C wc
 288927  894027 8860916

real    0m0.515s
user    0m0.504s
sys     0m0.136s

maia:~/src/perl.clean.loose$ du -sk .git/objects/pack/
113484  .git/objects/pack/
maia:~/src/perl.clean.loose$ cd -
/home/samv/src/perl.clean
maia:~/src/perl.clean$ du -sk .git/objects/pack/
107040  .git/objects/pack/
maia:~/src/perl.clean$

Want me to try this on kde.git?

Sam.
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Messages in current thread:
Decompression speed: zip vs lzo, Marco Costalba, (Wed Jan 9, 6:01 pm)
Re: Decompression speed: zip vs lzo, Junio C Hamano, (Wed Jan 9, 6:55 pm)
Re: Decompression speed: zip vs lzo, Sam Vilain, (Wed Jan 9, 7:23 pm)
Re: Decompression speed: zip vs lzo, Junio C Hamano, (Wed Jan 9, 7:49 pm)
Re: Decompression speed: zip vs lzo, Johannes Schindelin, (Wed Jan 9, 7:31 pm)
Re: Decompression speed: zip vs lzo, Nicolas Pitre, (Wed Jan 9, 11:41 pm)
Re: Decompression speed: zip vs lzo, Marco Costalba, (Thu Jan 10, 2:55 am)
Re: Decompression speed: zip vs lzo, Dana How, (Thu Jan 10, 3:34 pm)
Re: Decompression speed: zip vs lzo, Marco Costalba, (Thu Jan 10, 7:45 am)
Re: Decompression speed: zip vs lzo, Johannes Schindelin, (Thu Jan 10, 8:12 am)
Re: Decompression speed: zip vs lzo, Marco Costalba, (Thu Jan 10, 8:18 am)
Re: Decompression speed: zip vs lzo, Sam Vilain, (Wed Jan 9, 9:02 pm)
Re: Decompression speed: zip vs lzo, Sam Vilain, (Thu Jan 10, 1:02 am)
Re: Decompression speed: zip vs lzo, Pierre Habouzit, (Thu Jan 10, 5:16 am)
Re: Decompression speed: zip vs lzo, Nicolas Pitre, (Thu Jan 10, 4:39 pm)
Re: Decompression speed: zip vs lzo, Morten Welinder, (Fri Jan 11, 10:18 am)
Re: Decompression speed: zip vs lzo, Pierre Habouzit, (Fri Jan 11, 5:45 am)
Re: Decompression speed: zip vs lzo, Nicolas Pitre, (Fri Jan 11, 10:27 am)
Re: Decompression speed: zip vs lzo, Marco Costalba, (Thu Jan 10, 5:51 pm)
Re: Decompression speed: zip vs lzo, Nicolas Pitre, (Thu Jan 10, 6:18 pm)
Re: Decompression speed: zip vs lzo, Sam Vilain, (Thu Jan 10, 6:01 pm)
Re: Decompression speed: zip vs lzo, Linus Torvalds, (Thu Jan 10, 5:01 pm)
Re: Decompression speed: zip vs lzo, Sam Vilain, (Thu Jan 10, 5:45 pm)
Re: Decompression speed: zip vs lzo, Linus Torvalds, (Thu Jan 10, 6:03 pm)
Re: Decompression speed: zip vs lzo, Sam Vilain, (Thu Jan 10, 6:28 pm)
Re: Decompression speed: zip vs lzo, Linus Torvalds, (Thu Jan 10, 6:56 pm)
Re: Decompression speed: zip vs lzo, Sam Vilain, (Thu Jan 10, 9:01 pm)
Re: Decompression speed: zip vs lzo, Linus Torvalds, (Thu Jan 10, 10:10 pm)
Re: Decompression speed: zip vs lzo, Sam Vilain, (Fri Jan 11, 2:29 am)
Re: Decompression speed: zip vs lzo, Linus Torvalds, (Fri Jan 11, 12:03 pm)
Re: Decompression speed: zip vs lzo, Sam Vilain, (Fri Jan 11, 9:52 pm)
Re: Decompression speed: zip vs lzo, Junio C Hamano, (Sat Jan 12, 12:46 am)
Re: Decompression speed: zip vs lzo, Nicolas Pitre, (Fri Jan 11, 10:32 pm)
Re: Decompression speed: zip vs lzo, Sam Vilain, (Fri Jan 11, 11:06 pm)
Re: Decompression speed: zip vs lzo, Nicolas Pitre, (Sat Jan 12, 12:09 pm)
Re: Decompression speed: zip vs lzo, Johannes Schindelin, (Sat Jan 12, 12:44 pm)
Re: Decompression speed: zip vs lzo, Sam Vilain, (Fri Jan 11, 3:05 am)
Re: Decompression speed: zip vs lzo, Nicolas Pitre, (Thu Jan 10, 5:30 pm)
Re: Decompression speed: zip vs lzo, Pierre Habouzit, (Fri Jan 11, 4:57 am)