I tried disabling udev today. Mouse and keyboard didnt work in X.org after that. This wasn't the case years ago. Another bunch of cruft required. It sucks.
--- mfidel...@meetinghouse.net wrote: From: Miles Fidelman <mfidel...@meetinghouse.net> To: Debian-User <debian-user@lists.debian.org> Subject: Re: was Four people troll - now meandering off elsewhere Date: Mon, 03 Mar 2014 16:41:06 -0500 Scott Ferguson wrote: > On 03/03/14 23:28, Fred Wilson wrote: >> On Mon, 03 Mar 2014 12:52:40 +1100 >> Scott Ferguson <scott.ferguson.debian.u...@gmail.com> wrote: >> >>> Which is fine for you, and I can understand and appreciate that, for my >>> own personal computers my sentiments are similar. However my business >>> purposes involve meeting SLAs so reboots once or twice a year can cost a >>> lot of money - so in those circumstances a few minutes makes a lot of >>> difference. Perhaps that's not something you care about - or it's just >>> convenient to ignore until your bank/phone/stockbroker/shopping is >>> interrupted as a result. > http://en.wikipedia.org/wiki/Service-level_agreement > http://en.wikipedia.org/wiki/High_availability#Percentage_calculation > > When you pay for a five nines SLA, perhaps for your business web site > hosting, or what your bank/business pays for their trading platform that > means we must be offline a *total* of less than 5 and a half minutes *a > year*. That's begin reboot to all services restarted. Failure to do so > results in penalties that can *very* quickly exceed the annual support > contract. While a great deal of effort and planning goes into shifting > loads so that reboots don't affect production - things don't always work > to plan, so good plans allow for that. Meaning systems must be designed > to reboot in less than the allowed downtime - with a safety margin. If > we can shave a few seconds off reboot time we can shave a large amount > off the support contract price, with the possibility that those savings > are passed on to the consumer. Anybody who is counting on a fast reboot to maintain a 5 nines SLA is simply nuts. that's what redundancy and high-availability configurations are for. Personally, I'm a lot more worried about what's going to break when we move to Jessie and systemd - and all those things I might have to reconfigure. That involves serious time, effort, and dollars. And that's before the things that will break intermittently. I still shudder every time I think of the impact udev had on our operations, before we got the subtleties figure out. (Note: at the moment "we" = "me" and sleepless nights that impact other work.) Miles Fidelman -- In theory, there is no difference between theory and practice. In practice, there is. .... Yogi Berra -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: https://lists.debian.org/5314f6f2.7050...@meetinghouse.net _____________________________________________________________ Free e-mail, simple, clean and easy to use. Visit CosmicEmail.com for your instant free account. -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: https://lists.debian.org/20140303141358.529de...@m0005296.ppops.net
