SunOS5.8 is a radical departure from SunOs4.X in many ways. one of the important differences is the handling of devices. Adding devices under SunOS4.x required a kernel reconfiguration, recompliation and reboot. Under SunOS5.X, this has changed with the ability to add some drivers on the fly.... (1 Reply)
One cool thing about unix is that it predicts disk blocks that you may need and tries to have them in core before you need them. Over the years, various unix vendors tried various algorithms to improve performance. HP has patented their latest algorithm...
Multi-threaded Read Ahead Prediction... (0 Replies)
I would like to search a router config file for "ip address $ip", once found, I want to grab the line just before that contains "interface $interfacetype"
basically saying, 10.3.127.9 is assigned to "Loopback1" given the below as an example.
interface Loopback1
ip address 10.3.127.9... (1 Reply)
Hi Guys,
I wonder if after enabling CIO/DIO at the filesystem level and assuming that CIO/DIO will bypass the JFS2 read ahead available when not using CIO/DIO my questionis what parameters I can play with to tune/improve the CIO in order to obtain similar performance for sequential reads (... (7 Replies)
:confused:
Good Day,
I have this script that gets the archive names and the time it applies based on the alert log. The application of archives are of daily basis and usually many so having this script helps my job become easier.
My problem is that when i get all the time stamps and... (1 Reply)
Hi,
I am trying to write a ksh to compare the time in a date
date
Thu Jul 1 09:01:24 PDT 2010
when I try to get hour
date | awk '{print $4}' | cut -f1 -d:
08
how I can trim the 0 ahead of 08 to make it 8?
please help~ (7 Replies)
Time on unix server shows 8:00a CST
Time on Windows 7 Box shows 8:00a CST
However when you access an NFS share the time stamp on the files show an hour ahead? Talking about a newly created file shows an hour ahead so at 8:00a the file will show a time stamp of 9:00a CST
the problem it... (1 Reply)
Discussion started by: Paul Standley
1 Replies
LEARN ABOUT CENTOS
pmdate
PMDATE(1) General Commands Manual PMDATE(1)NAME
pmdate - display an offset date
SYNOPSIS
pmdate [ offset ... ] format
DESCRIPTION
pmdate displays the current date and/or time, with an optional offset.
An offset is specified with a leading sign (``+'' or ``-''), followed by an integer value, followed by one of the following ``scale'' spec-
ifiers;
S seconds
M minutes
H hours
d days
m months
y years
The output format follows the same rules as for date(1) and strftime(3).
For example, the following will display the date a week ago as DDMMYYYY;
pmdate -7d %d%m%Y
PCP ENVIRONMENT
Environment variables with the prefix PCP_ are used to parameterize the file and directory names used by PCP. On each installation, the
file /etc/pcp.conf contains the local values for these variables. The $PCP_CONF variable may be used to specify an alternative configura-
tion file, as described in pcp.conf(5).
SEE ALSO date(1), strftime(3), pcp.conf(5) and pcp.env(5).
Performance Co-Pilot PCP PMDATE(1)