Difference between revisions of "User:Tomato"

From ArchWiki
Jump to: navigation, search
(What we want)
(lessfs)
Line 1: Line 1:
 
''just my personal scrapbook''
 
''just my personal scrapbook''
 +
 +
== lessfs ==
 +
=== Bucket sizes ===
 +
Usually when performance drops after reaching a certain database size this indicates that the bucketsize selected in <code>/etc/lessfs.cfg</code> is to low. The default 'lessfs.cfg' example included with the code only allows the database to grow up to: 2GB after which performance degrades.
 +
To store 50GB the bucketsize should be at least : 27262976
 +
<pre>
 +
2MB bucketsize equals 1000000 database entries.
 +
To store 50GB :
 +
50GB = 50*1024*1024*1024 = 53687091200 bytes
 +
53687091200/4096 (4k blocksize) = 13107200 entries in the databases.
 +
13107200/1000000 (divide by 10^6 entries)
 +
13 *2 (10^6 entries requires 2MB) = 26
 +
26 * 1024*1024 = 27262976 -> This is the bucketsize you need for 50GB with a 4k blocksize.
 +
</pre>
 +
(from http://sourceforge.net/projects/lessfs/forums/forum/932600/topic/3304815)
 +
 +
=== Files to put on different spindles ===
 +
For max performance compile with –with-sha3 and put the FILEBLOCK and BLOCKUSAGE databases each on there own raid one disk set. The faster these disks are the better. BLOCKDATA can be on raid5/6.
 +
(from http://www.lessfs.com/wordpress/?p=295)
  
 
Configuring Samba Domain/File server.
 
Configuring Samba Domain/File server.

Revision as of 21:09, 3 March 2010

just my personal scrapbook

lessfs

Bucket sizes

Usually when performance drops after reaching a certain database size this indicates that the bucketsize selected in /etc/lessfs.cfg is to low. The default 'lessfs.cfg' example included with the code only allows the database to grow up to: 2GB after which performance degrades. To store 50GB the bucketsize should be at least : 27262976

2MB bucketsize equals 1000000 database entries.
To store 50GB :
50GB = 50*1024*1024*1024 = 53687091200 bytes
53687091200/4096 (4k blocksize) = 13107200 entries in the databases.
13107200/1000000 (divide by 10^6 entries)
13 *2 (10^6 entries requires 2MB) = 26
26 * 1024*1024 = 27262976 -> This is the bucketsize you need for 50GB with a 4k blocksize.

(from http://sourceforge.net/projects/lessfs/forums/forum/932600/topic/3304815)

Files to put on different spindles

For max performance compile with –with-sha3 and put the FILEBLOCK and BLOCKUSAGE databases each on there own raid one disk set. The faster these disks are the better. BLOCKDATA can be on raid5/6. (from http://www.lessfs.com/wordpress/?p=295)

Configuring Samba Domain/File server.

What we want

basically, everything that Samba has to offer:

guide: https://help.ubuntu.com/community/SettingUpSambaPDC