Early this morning our sar reports show that WIO on the system was over 50% for about an hour. We also had some users complain about response time problems during this time. Is there a way I can go back and check what disks were busy during this time (something like topas but for historical data)? (1 Reply)
Hi
I have a requirement to list the files & the total disk utilization they have which are 10 prior to current date.
I tried couple of options in combinations of find mtime, ctime with du -m, but no luck.
Could you please help me in this ? (2 Replies)
Hi,
I have monitored that disk utilization is very high on one of red hat linux VM.
Would like to know how to find out that issue of high disk utilization is because of disk or Installed Application on that server is causing the problem.
Regards,
Manoj (1 Reply)
Hi,
I need help to write a script which will monitor disk utilization.
Please suggest the best approach to achive this.
I am thinking of having sleep inside the script which will run for(eg.) 60 secs and then disk utilization will be checked and depends on the % usage of disk mail will... (1 Reply)
Hi,
I wrote the following script for monitoring disk space and inform the concerned team accordingly. But script gives me below error
syntax error at line 70 : `<' unmatched
#!/bin/ksh
. /home/scr/.profile
. /home/scr/.infa_env
# Get the list of Integration Services
... (6 Replies)
Dear Gentleman
in my environment I have Solaris10 OS Box in Global Zone with 136 GB and mount point from SAN Storage 500 GB (Orastorage)
Zone1 mounted on /Zones folder with 66 GB
when I run zpool list output
-bash-3.00$ zpool list
NAME SIZE ALLOC FREE CAP HEALTH... (0 Replies)
Hi,
I have hundred folders under a fs /apps which is used by different users and they upload their data to these folders on a daily basis.
Using du -sk gives me complete structure of the filesystem but i want to find out day to day utlization of the top ten highest accoriding to size wise
... (4 Replies)
Hi Fiends,
I am new to scripting., I want to calculate the 2nd column in the below output and print the average for each hdisk.
Below is the output of sar command,
hdisk0 0
hdisk0 2
hdisk0 0
hdisk1 2
hdisk1 2
hdisk1 2
hdisk2 1
hdisk2 0
hdisk2 0
Thanks,
Srinivasan (3 Replies)
Hi All,
I am using SSH Tectia terminal to get the disk space utilization of a particular folder /opt/logs in all the servers one by one using the command df -h and looking through the list of folders manually to get /opt/logs folder disk space used percentage .
The problem here is , it... (2 Replies)
how to check overall hard disk utilization in unix?
we use bdf command to find the utilized space for the particular path
bdf filepath
how can i find overall hard disk utilization? (4 Replies)
Discussion started by: ashwanthfrq
4 Replies
LEARN ABOUT DEBIAN
bup-margin
bup-margin(1) General Commands Manual bup-margin(1)NAME
bup-margin - figure out your deduplication safety margin
SYNOPSIS
bup margin [options...]
DESCRIPTION
bup margin iterates through all objects in your bup repository, calculating the largest number of prefix bits shared between any two
entries. This number, n, identifies the longest subset of SHA-1 you could use and still encounter a collision between your object ids.
For example, one system that was tested had a collection of 11 million objects (70 GB), and bup margin returned 45. That means a 46-bit
hash would be sufficient to avoid all collisions among that set of objects; each object in that repository could be uniquely identified by
its first 46 bits.
The number of bits needed seems to increase by about 1 or 2 for every doubling of the number of objects. Since SHA-1 hashes have 160 bits,
that leaves 115 bits of margin. Of course, because SHA-1 hashes are essentially random, it's theoretically possible to use many more bits
with far fewer objects.
If you're paranoid about the possibility of SHA-1 collisions, you can monitor your repository by running bup margin occasionally to see if
you're getting dangerously close to 160 bits.
OPTIONS --predict
Guess the offset into each index file where a particular object will appear, and report the maximum deviation of the correct answer
from the guess. This is potentially useful for tuning an interpolation search algorithm.
--ignore-midx
don't use .midx files, use only .idx files. This is only really useful when used with --predict.
EXAMPLE
$ bup margin
Reading indexes: 100.00% (1612581/1612581), done.
40
40 matching prefix bits
1.94 bits per doubling
120 bits (61.86 doublings) remaining
4.19338e+18 times larger is possible
Everyone on earth could have 625878182 data sets
like yours, all in one repository, and we would
expect 1 object collision.
$ bup margin --predict
PackIdxList: using 1 index.
Reading indexes: 100.00% (1612581/1612581), done.
915 of 1612581 (0.057%)
SEE ALSO bup-midx(1), bup-save(1)BUP
Part of the bup(1) suite.
AUTHORS
Avery Pennarun <apenwarr@gmail.com>.
Bup unknown-bup-margin(1)