From: Green, Simon (SGreen@KRAFTEUROPE.COM)
Date: Thu Jul 25 2002 - 04:46:24 EDT
The nbpi size affects this, as inodes take up space and a small nbpi means
there are more of them. Try it again, specifying the same nbpi for both
filesystems.
Simon Green
Philip Morris ITSC Europe
AIX-L Archive at http://marc.theaimsgroup.com/?l=aix-l
<http://marc.theaimsgroup.com/?l=aix-l&r=1&w=2> &r=1&w=2
AIX FAQ at http://www.faqs.org/faqs/aix-faq/
<http://www.faqs.org/faqs/aix-faq/>
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-----Original Message-----
From: Eve Zeng [mailto:eve@ASIRIUS.COM]
Sent: 25 July 2002 04:03
To: aix-l@Princeton.EDU
Subject: How does fragmentation work?
Hi,
Can anyone of you explain this: I have created 2 filesystems as shown below,
/tmp/frag4096 created with fragmentation size 4096 and nbpi 4096,
/tmp/frag512 created with fragmentation size 512 and nbpi 512, and I stored
50 512-byte files in each filesystem, theoretically /tmp/frag512 should save
more space when storing small files, but it doesn't seem to be the case,
why?
Filesystem 512-blocks Free %Used Iused
%Iused Mounted on
/dev/lv01 32768 31256 5% 67
2% /tmp/frag4096
/dev/lv02 32768 24416 26% 67
1% /tmp/frag512
Any prompt reply will be greatly appreciated!
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