Glass “whiteboard”

Back when I worked for Frontier/Global Crossing, my cow orkers who had window offices often used them as whiteboards. That impressed me as such a good idea that when I went to SunGard and had a window office, I started doing the same thing myself.

Today, I needed to hash out some big diagrams, transaction diagrams and XML with a couple of other guys, and since none of us had very big whiteboards in our office, I suggested we use the windows in the break room. The people I was meeting with didn’t believe me at first, but went along with it once I demostrated that it wipes off as easily as on a whiteboard. But everybody who came into the break room while we were at work stared in disbelief and made sarcastic remarks.

Is using a window as a whiteboard really that unusual?

Some network benchmarks

I wanted to see how fast my rack is. Now, I think that one of my shares is doing a bittorrent at the same time, so this is a conservative test. For most of these, I’m doing a wget of the Rochester Road Runner speed test file at http://speedtest.rochester.rr.com/testlarge.zro

  • From RR.com to my home machine: 19:12:13 (392.85 KB/s)
  • From RR.com to my rack: 19:02:44 (493.74 KB/s)
  • From my rack to my home machine: 20:00:30 (364.74 KB/s)

(Yeah, I know the times and the given KB/s values don’t make sense. I just report them as wget reports them.)

That’s not bad. I think it shows that the rack system can keep the 10BaseT network connection pretty saturated. Both up and down.

That’s a rack!

I put my server on the rack today and xen1.xcski.com is open for business. I’ve already moved the Rochester Flying Club and Rochester Association of Family Mediators web sites over. As the DNS changes propogate, I’ll be able to remove the ones on the linode.

It appears that mail is working on the new site as well, so I’ll move the mailman mailing lists over pretty soon. I’ll probably move this blog over there as well. Then comes the hard part – moving the navaid.com application over.

The only sour note is that when I started up the rack, one of the quarter share xens didn’t want to come up correctly. It complained about tons of fsck errors, and I decided to just wipe it and re-install it. I hope that doesn’t happen again. One thing I noticed is that the xen kernel doesn’t have the ext3 module compiled in, and so it’s mounting these file systems without journalling. I’m going to have to fix that.

It’s here!

My “new” used 1U server is here. It’s a 1U VA Linux 1220 with two 1GHz Pentium IIIs, and 1Gb of RAM.
VA Linux 1220VA Linux 1220 (2)

It only has a 20Gb IDE drive, but I have a 250Gb IDE drive on order from NewEgg which should be here soon. (It also has a built in SCSI controller, if I ever decide I have more money than brains.) The built in CD-ROM doesn’t seem to work – the BIOS recognizes it, but it won’t boot from it. And after I installed using another CD-ROM (which doesn’t fit in the case properly), it won’t mount drives in the built-in CD-ROM. I’ve emailed the vendor asking if he can send me a working CD-ROM – I won’t write his feedback until that’s resolved. Another weird thing, it won’t boot if I have my KVM plugged into the USB port. But that’s not a great hardship.

It’s also really, really noisy. Can’t wait to send it off to a nice rack space somewhere.

I’ve got a Debian 3.1 base system installed on it already. Now to get Xen installed.

Leaf Peeping Flight

One of the things that Vicki and I have never done is go up and look at the fall colours from the air. Today was a wonderful day, severe clear and not very windy. The leaves aren’t at their peak yet, but we’re there, the plane is there, and we don’t have anything else to do. So when we got back from Buttonville and cleared customs, we headed off again.

I wanted to stay low to get a better view, unlike the flight across the lake, where we kept very high for a smoother ride and better glide distance while over the lake. That made it a bit bumpy. But not unbearably so.

We left Rochester airspace going south at 2500 feet. As soon as we got out of the airspace, I punched my user waypoint for the local wind farm into my GPS, and we headed out to look at the windmills. Not only are the windmills scenic themselves, but they’re near a nice valley. That was good. Then I headed towards Letchworth Canyon and cruised along it down to the famous Upper and Lower Falls and railway trestle.

After that, we cruised back up the canyon in the other direction. Then Vicki had a nifty idea – to go fly over our house. The Rochester airport hadn’t been too busy when we’d come in – they’d cleared me to land while I was still 15 miles out. So I figured what the hell, I’ll ask for it.

First thing is to try to find something that the controller would recognize. I zoomed in the hand-held GPS to try to find a waypoint near our house – I had an idea that we were near the outer marker for the ILS 28 approach. But I couldn’t find anything. So I told him that we weren’t too far south of the southern tip of the Irondequoit Bay – I figured they’d know where where that is because of the seaplane operations there. The controller approved our request, so I descended to pattern altitude, because I knew it would put us below where the airplanes on ILS 28 would be at that point. Vicki spotted our house, and I did a steep turn around it so we could get a good view. After our turn, I thanked Rochester Approach and they cleared me for a straight in to runway 25.

That was really nice. I hope we can do that again some time.