RE: Updating world with least downtime
I recently rebuilt the world on my pII 400 system, and here is how long it took me. /usr/bin/time make installworld 266.34 real74.23 user43.33 sys /usr/bin/time make installkernel 26.11 real 6.89 user 2.38 sys So it took about 4.8 minutes to install the files, given average consumer grade disks. Compiling is more cpu dependant, but the install portion is more a function of disk-io. Mergemaster is obviously dependent on how quickly it takes the operator to run that command. But if you budget 10 - 15 minutes, it should be good enough. Sameer -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Kevin Oberman Sent: Friday, August 30, 2002 2:11 PM To: Jack L. Stone Cc: Brooks Davis; David W. Chapman Jr.; [EMAIL PROTECTED] Subject: Re: Updating world with least downtime For a modern system and a reasonable disk, this is trivial. I have a system which MUST not be down for over 15 minutes and I can do it quite easily unless I really fumble something in mergemaster. I do always merge a few files later and tend to install most changes very quickly, having ode the same upgrade on a non-critical system just before I do the critical one so I know what to expect. The actual installworld time on my 1GHZ system is about 5 minutes (5:34 last time). R. Kevin Oberman, Network Engineer Energy Sciences Network (ESnet) Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab) E-mail: [EMAIL PROTECTED]Phone: +1 510 486-8634 To Unsubscribe: send mail to [EMAIL PROTECTED] with unsubscribe freebsd-stable in the body of the message
Re: Updating world with least downtime
Date: Fri, 30 Aug 2002 17:20:24 -0700 From: David Schultz [EMAIL PROTECTED] Thus spake Kevin Oberman [EMAIL PROTECTED]: For a modern system and a reasonable disk, this is trivial. I have a system which MUST not be down for over 15 minutes and I can do it quite easily unless I really fumble something in mergemaster. I do always merge a few files later and tend to install most changes very quickly, having ode the same upgrade on a non-critical system just before I do the critical one so I know what to expect. The actual installworld time on my 1GHZ system is about 5 minutes (5:34 last time). Nice record. There ought to be a better solution than ``run mergemaster really fast and hope nothing goes wrong,'' though. For example, you could use mergemaster with -D on a copy of /etc and commit the copy in single user mode. No. I run mergemaster on another system to confirm what needs to be merged before reboot or can be installed with no complications. Then plan what I will have to do with any files that require merging. This is far different from just rushing through things and risking s disaster. It is, as the subject of the thread states, Updating world with least downtime. I like the idea of an early-run using -D, though. I might do that next time I update a system. Should be even faster than what I do and less prone to error. Thanks for the suggestion. R. Kevin Oberman, Network Engineer Energy Sciences Network (ESnet) Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab) E-mail: [EMAIL PROTECTED] Phone: +1 510 486-8634 To Unsubscribe: send mail to [EMAIL PROTECTED] with unsubscribe freebsd-stable in the body of the message
Re: Updating world with least downtime
Thus spake Kevin Oberman [EMAIL PROTECTED]: For a modern system and a reasonable disk, this is trivial. I have a system which MUST not be down for over 15 minutes and I can do it quite easily unless I really fumble something in mergemaster. I do always merge a few files later and tend to install most changes very quickly, having ode the same upgrade on a non-critical system just before I do the critical one so I know what to expect. The actual installworld time on my 1GHZ system is about 5 minutes (5:34 last time). Nice record. There ought to be a better solution than ``run mergemaster really fast and hope nothing goes wrong,'' though. For example, you could use mergemaster with -D on a copy of /etc and commit the copy in single user mode. To Unsubscribe: send mail to [EMAIL PROTECTED] with unsubscribe freebsd-stable in the body of the message
