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Conference decwet::advfs_support

Title:AdvFS Support/Info/Questions Notefile
Notice:note 187 is Freq Asked Questions;note 7 is support policy
Moderator:DECWET::DADDAMIO
Created:Wed Jun 02 1993
Last Modified:Fri Jun 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:1077
Total number of notes:4417

1020.0. "Performance degrade ." by HGOVC::SIUKEUNGLEE () Tue Mar 18 1997 23:36

    Hi,
    
    Customer report performance degrade if no. of small file increase in
    the file domain. The file domain contain two fileset, one of the 
    fileset contain over 1500K files. Anyway to increase the performance ?
    And how can I check the created extent size for each of file domain ?
    
    Welcome nay suggestion.
    
    David.
T.RTitleUserPersonal
Name		DateLines
1020.1NETRIX::"[email protected]"Janice ChangWed Mar 19 1997 06:3813
Hello.  Which version of Digital Unix are you running?

In 4.0, you can use the -p and -x options to mkfdmn, as well as the -p and -x
options to addvol, to reduce metadata extent fragmentation.  The manpages
have more information.

To find out extent information for files, you can use the showfile command.
(See the manpage).  To find out extent information for the metadata table,
you can cd into .tags, and do "showfile -x M-6."

-Janice 
[Posted by WWW Notes gateway]
1020.2For multiple volume domains there are multiple BMTsUNIFIX::HARRISJuggling has its ups and downsWed Mar 19 1997 07:4219
>    To find out extent information for files, you can use the showfile
>    command. (See the manpage).  To find out extent information for the
>    metadata table, you can cd into .tags, and do "showfile -x M-6."
    
    If there are multiple volumes in the domain, then you will want to use
    showfdmn to get a list of the volume numbers, then use the following
    formula to get the M-? values in order to display the BMT fragmentation
    for each volume
    
    	<vol#> * 6
    
    cd /fileset_mount_point/.tags
    showfile -x M-6	# volume 1
    showfile -x M-12	# volume 2
    showfile -x M-18	# volume 3
    etc...
    showfile -x M-66	# volume 11
    
    					Bob Harris