10-07-2009
zxmaus
Thanks for the response. we are on HP-UX server.
you are right, we had fragmentation problem on the unix box. My SA was saying we had the buffer Cache fragmentation as well, which kept adding to our problems.
the Admin ran a over-night de-frag process and increased the kernel parameter bcvmap_size_factor.
We re-booted the box and things look much better now
we are planning to keep an eye on the system and see when it starts to choke, so that we can plan for a de-frag periodically.
Thanks
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LEARN ABOUT OSF1
shfragbf
shfragbf(8) System Manager's Manual shfragbf(8)
NAME
shfragbf - displays frag file information
SYNOPSIS
/sbin/advfs/shfragbf file_system /.tags/1
OPERANDS
Specifies the fileset mount point of the file system to display.
DESCRIPTION
Use this command to display how much space is used on the frag file. Type
The frag type is 0K (not in use), 1K for 1K frags, etc. Grps
Specifies the number of groups of the frag type. bad
Specifies the number of bad group headers of this type. Frags
Specifies the number of fragments of this type. free
Specifies the number of free frags of this type. in-use
Specifies the number of fragments in use. Bytes
Specifies the total bytes in this frag type. free
Specifies the number of bytes free in this type. in-use
Specifies the number of bytes in use in this type.
RESTRICTIONS
You must have root user privileges to access this command.
EXAMPLES
Following is an example of the shfragbf output: # shfragbf /usr/.tags/1
Type Grps bad Frags free in-use Bytes free in-use ---- ------ ------ ------ ------ ------ ------ ------ ------
0k 0 0 0 0 0 0k 0k 0k
1k 10 0 1270 130 1140 1270k 130k 1140k
2k 11 0 693 54 639 1386k 108k 1278k
3k 20 0 840 39 801 2520k 117k 2403k
4k 19 0 589 22 567 2356k 88k 2268k
5k 16 0 400 5 395 2000k 25k 1975k
6k 17 0 357 6 351 2142k 36k 2106k
7k 21 0 378 9 369 2646k 63k 2583k
Percent Free Frags per Group Histogram Type Grps 9% 19% 29% 39% 49% 59% 69% 79% 89% 99% 100% ---- ------ --- --- ---
--- --- --- --- --- --- --- ---
0k 0 0 0 0 0 0 0 0 0 0 0 0
1k 10 8 0 1 0 0 0 0 0 0 0 0
2k 11 10 0 0 0 0 0 0 0 1 0 0
3k 20 19 0 0 0 0 0 0 0 1 0 0
4k 19 18 0 0 0 0 0 1 0 0 0 0
5k 16 15 0 1 0 0 0 0 0 0 0 0
6k 17 16 0 1 0 0 0 0 0 0 0 0
7k 21 20 0 0 0 1 0 0 0 0 0 0
fragbf occupies 14592k bytes
13753k in-use, 567k free, 114k overhead, 158k wasted
FILES
Specifies the command path.
SEE ALSO
advfs(4)
shfragbf(8)