system requires to boot more fastly

[DENNY JOSEPH_1]

is there any way to boot hp-ux system boots more fastly

[Steven Schweda]

1. Faster hardware.

2. Faster or less software.

How fast is it now? How fast would be fast
enough?

With exactly no information about what you're
doing, and why, it's hard to make specific
suggestions. With a question this vague, did
you really expect much useful information?

[Dennis Handly]

Why do you need to boot so often that this matters?
Are you patching? Is the system crashing?

[Bill Hassell]

The first thing to do is to find which steps take the most time. Then determine whether you need that step in the bootup process. The best way to measure the start/stop time is to add a timestamp in front of each script. To do this, edit the file:

/sbin/rc.utils

Around line 610-620, there is a line that looks like this:

echo "----------------------------" >> $LOGFILE

Change this line to:

echo "---------------------------- $(date)" >> $LOGFILE

Then modify the second command around line 740, just like the previous line. From now, the startup and shutdown steps will be logged with a timestamp in /etc/rc.log.

Then reboot and look at the file: /etc/rc.log. You'll see the start time for each step. Look for a long delay between two steps.

What is the time for your current system? If it is 1 minute or less, then you can't improve on that very much at all. If it is 30 mins or more, you have some application that is taking far too much time to start and needs to be fixed. If the delay is in NFS steps, turn off NFS in the /etc/rc.config.d scripts. NFS is notroius for long delays when it isn't used or a remote NFS server is not working.

[VK2COT]

Hello,

Which boot time do you have in mind:

a) Hardware checks;

b) Real boot process.

The latter one is easy to check.
In fact, one of the tests in my Perl scripts
covers it:

BEGIN CHECKING BOOT PROCESS TIMINGS 01-03-2010-14:39:45
_______________________________________________________
AUDIT-INFO: Boot timings as recorded in current /etc/rc.log
HP-UX Start-up in progress
Mon Mar 1 13:00:42 EDT 2010
HP-UX run-level transition completed
Mon Mar 1 13:09:10 EDT 2010

This was on a server rx2660. You can see
these lines in /etc/rc.log. As well,
you can add measurements in each RC
start-up script (as others already pointed
it out).

If you want to speed up hardware checks,
then use HP-UX 11.31 and check Fastboot
options for example:

http://docs.hp.com/en/5991-1247B_ed2/ch05s25.html

Regards,

VK2COT

[DENNY JOSEPH_1]

Actually my question is that i am 100% sure that my all the hardware , lvm everything working fine. and I just want to skip all these checkings while booting ...is it possible... can any body help..?

[Torsten.]

On most servers you can configure "fastboot", this disables some of the hardware tests after power on.

But this can cause a problem later, if there is a not detected problem with the hardware.

I would not do this.


Most servers have an uptime of several weeks, months or whatever, so boot time is rarely an issue.

However, it's faster than years ago - remember the old k-classes with a boot time of 40 minutes ...

[James R. Ferguson]

Hi Denny:

> Actually my question is that i am 100% sure that my all the hardware , lvm everything working fine. and I just want to skip all these checkings while booting ...is it possible... can any body help..?

Re-read VK2COT's comments above. I don't think you paid sufficient attention to his pointers to FASTBOOT. You can disable various hardware tests if you insist.

Of course, as usual, knowing *exactly* what hardware and/or release you are running would lead to a more detailed answer.


Regards!

...JRF...

[John Guster]

to speed up, one of thing one can do is to let the process run at backgroud. That is don't wait it finished then move to start next process.

[James R. Ferguson]

Hi (again) Denny:

To add to Torsten's comment advising against doing this, I would agree *unless* you are doing a series of reboots for software updates. Then, you might temporarily defeat some of the hardware self-tests to shorten your overall downtime.

Regards!

...JRF...