8 More Discussions You Might Find Interesting
1. Solaris
Hi every one,
we have a set up in solaris 8 and 9 and running many cshell scripts.. we are migrate to AIX . Now, i want to know the latency difference between two boxes(Solaris and AIX). Kindly help me to , how to do Latency test.. (2 Replies)
Discussion started by: Madhu Siddula
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2. AIX
Hi every one,
we have a set up in solaris 8 and 9 and running many cshell scripts.. we are migrate to AIX . Now, i want to know the latency difference between two boxes(Solaris and AIX). Kindly help me to , how to do Latency test.. (0 Replies)
Discussion started by: Madhu Siddula
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3. UNIX for Dummies Questions & Answers
Hi,
I went to a computer store and the salesman sold me a SATA cable and told me that all SATA cables are the same. Another salesman at a different store told me a cable rated for SATA 2, which I bought, MIGHT work as well as one rate for SATA 3 but it is not guaranteed. I decided to run a... (3 Replies)
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4. Cybersecurity
Hello guys,
I'm actually working on my master thesis which has for subject the evaluation of virtual firewall in a cloud environment. To do so, I installed my own cloud using OpenNebula (as a frontend) and Xen (as a Node) on two different machines. The Xen machine is my virtual firewall thanks... (2 Replies)
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5. UNIX for Advanced & Expert Users
Hi all,
When I use an editor (vi) that is spawned in a remote server, visually I could see the latency between typing a character/word and being displayed on the terminal. I could see this visually but how do I get a metric on this or how to quantify this?
As expected, when I type in a editor... (6 Replies)
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6. HP-UX
Our comp-operator has come across a peculiar ‘feature'. We have this directory where we save all the reports that were generated for a particular department for only one calendar year. Currently there are 45,869 files. When the operator tried to backup that drive it started to print a flie-listing... (3 Replies)
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7. Shell Programming and Scripting
what is wrong with the below script:
---------------------------------------------------------------------------------
#!/bin/bash
echo "Setting JrePath..."
grep -w "export JrePath" /etc/profile
Export_Status=$?
if
echo "JrePath declared"
elif
echo "JrePath not declared"
echo... (4 Replies)
Discussion started by: proactiveaditya
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8. Shell Programming and Scripting
is there anyway to make while run a command faster than per second?
timed=60
while
do
command
sleep 1
done
i need something that can run a script for me more than one time in one second. can someone help me out here? (3 Replies)
Discussion started by: Terrible
3 Replies
iopending(1m) USER COMMANDS iopending(1m)
NAME
iopending - plot number of pending disk events. Uses DTrace.
SYNOPSIS
iopending [-c] [-d device] [-f filename] [-m mount_point] [interval [count]]
DESCRIPTION
This samples the number of disk events that are pending and plots a distribution graph. By doing this the "serialness" or "parallelness" of
disk behaviour can be distinguished. A high occurance of a pending value of more than 1 is an indication of saturation.
Since this uses DTrace, only users with root privileges can run this command.
OPTIONS
-c clear screen
-d device
instance name to snoop (eg, dad0)
-f filename
full pathname of file to snoop
-m mount_point
mountpoint for filesystem to snoop
EXAMPLES
Default output, print I/O summary every 1 second,
# iopending
Print 10 second samples,
# iopending 10
Print 12 x 5 second samples,
# iopending 5 12
Snoop events on the root filesystem only,
# iopending -m /
FIELDS
value number of pending events, 0 == idle
count number of samples @ 1000 Hz
load 1 min load average
disk_r total disk read Kb for sample
disk_w total disk write Kb for sample
IDEA
Dr Rex di Bona
DOCUMENTATION
See the DTraceToolkit for further documentation under the Docs directory. The DTraceToolkit docs may include full worked examples with ver-
bose descriptions explaining the output.
EXIT
iopending will run forever until Ctrl-C is hit, or the specified count is reached.
AUTHOR
Brendan Gregg [Sydney, Australia]
SEE ALSO
iosnoop(1M), iotop(1M), dtrace(1M)
version 0.60 Nov 01, 2005 iopending(1m)