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 folks,
Sorry to barge in and ask a question right off the bat without contributing first.
I have a V440, 4 X 1GHZ, 32GB ram, and recently syslogd has started showing 30+ % cpu usage. It's also repeating entries in the syslog, over and over.
the /var/log/syslog file had grown to over 2GB - I... (2 Replies)
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,
Can anybody explain why my newly created 120G FS shows 100% utilization when only 113G of disk space has been used? ......
# df -h .
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/vg01-lvol0
119G 113G 0 100% /u02
#du -h /u02
16K ... (3 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)
I am trying for a shell script like, if the ram utilization is less than 300M and the load average is more then 4.00 , should take all the top users of memory and CPU utilization through "top" and "ps " command and put under one path. (6 Replies)
Discussion started by: gsiva
6 Replies
LEARN ABOUT DEBIAN
unbuffer
UNBUFFER(1) General Commands Manual UNBUFFER(1)NAME
unbuffer - unbuffer output
SYNOPSIS
unbuffer program [ args ]
INTRODUCTION
unbuffer disables the output buffering that occurs when program output is redirected from non-interactive programs. For example, suppose
you are watching the output from a fifo by running it through od and then more.
od -c /tmp/fifo | more
You will not see anything until a full page of output has been produced.
You can disable this automatic buffering as follows:
unbuffer od -c /tmp/fifo | more
Normally, unbuffer does not read from stdin. This simplifies use of unbuffer in some situations. To use unbuffer in a pipeline, use the
-p flag. Example:
process1 | unbuffer -p process2 | process3
CAVEATS
unbuffer -p may appear to work incorrectly if a process feeding input to unbuffer exits. Consider:
process1 | unbuffer -p process2 | process3
If process1 exits, process2 may not yet have finished. It is impossible for unbuffer to know long to wait for process2 and process2 may
not ever finish, for example, if it is a filter. For expediency, unbuffer simply exits when it encounters an EOF from either its input or
process2.
In order to have a version of unbuffer that worked in all situations, an oracle would be necessary. If you want an application-specific
solution, workarounds or hand-coded Expect may be more suitable. For example, the following example shows how to allow grep to finish pro-
cessing when the cat before it finishes first. Using cat to feed grep would never require unbuffer in real life. It is merely a place-
holder for some imaginary process that may or may not finish. Similarly, the final cat at the end of the pipeline is also a placeholder
for another process.
$ cat /tmp/abcdef.log | grep abc | cat
abcdef
xxxabc defxxx
$ cat /tmp/abcdef.log | unbuffer grep abc | cat
$ (cat /tmp/abcdef.log ; sleep 1) | unbuffer grep abc | cat
abcdef
xxxabc defxxx
$
BUGS
The man page is longer than the program.
SEE ALSO
"Exploring Expect: A Tcl-Based Toolkit for Automating Interactive Programs" by Don Libes, O'Reilly and Associates, January 1995.
AUTHOR
Don Libes, National Institute of Standards and Technology
1 June 1994 UNBUFFER(1)