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ImageMagick book
MythTV book
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Mon, 31 Dec 2007
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17:56: We went for a random drive today
17:56: North on the 101, the turn west and head towards Half Moon Bay (where Scoble lives)
17:57: We wanted to hit the coast and drive north, as we've always driven south from Half Moon Bay
17:57: We went north for about 20 miles before deciding it was boring (a lot more built up than the south option)
17:57: So we turned around and went south
17:57: We stopped at a state beach and let the kids explore, and then went on to the Pigeon Point lighthouse, which is a bit of a family favourite
17:58: And then we drove home
17:58: So there you go...
19:27: Wow. They're making Australian version of Top Gear (the original Top Gear would have to be my favourite TV show)
19:28: I know a dude who put his hat in the ring to host...
20:31: Writing C for the first time in two years
20:31: Process... so... painful... compared with python
Tags for this post: blather( )
posted at: 20:31 | path: /blather | permanent link to this entry
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Sat, 29 Dec 2007
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16:21: Playing with fan speed control in order to make my living room quieter
16:22: On the older machine with a Zalman HD160b case, it was as simple as changing the outputs I was using on the "ZM-MC1 Multi Connector"
16:23: On the newer machine, which as a "BIOSTAR TForce TF7050-M2 AM2 NVIDIA GeForce 7050PV HDMI Micro ATX AMD Motherboard", it turns out I have software case fan speed control and didn't realise
16:23: To get it going:
16:23: - sudo sensors-detect
16:24: - sudo pwmconfig
16:29: Unfortunately, the controllers don't appear to actually affect fan speed (despite PWM saying it is). I guess that means its time for a hardware solution.
18:29: Selfish eating at Chevy's cause SJR can't
20:20: Went to Frys and bought two "Thermaltake Smart Fan 2"s for the machine without the funky Zalman cable
20:21: Of course, one of them was dead on arrival. Hurrah.
Tags for this post: blather( )
posted at: 20:21 | path: /blather | permanent link to this entry
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Fri, 28 Dec 2007
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08:16: For the first time in six months there was a fare inspector in the VTA light rail
08:17: I'm glad I paid my $1.75 today
08:59: An interesting read about ex-Googlers entering the venture capital market -- http://www.nytimes.com/2007/12/28/business/28vc.html?_r=1&pagewanted=print
16:16: I saw this in one of our offices the other day. Its uber cool, and I am offically jealous.
21:39: Want to make heaps of money running a coffee shop in America? Apparently the secret is to be next door to a Starbucks.
21:40: Playing with postal. I think it meets most of my needs, and the rest I can hack on...
21:40: I needed to disable GNUTLS to get it to compile, but such is life
Tags for this post: blather( )
posted at: 21:40 | path: /blather | permanent link to this entry
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Thu, 27 Dec 2007
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08:33: Its weird going to work when hardly anyone else is
08:33: I hope the shuttle is running...
08:36: The shuttle still runs! Hurrah!
08:36: The train is half the length is normally is, and there are only four people on it
15:42: They've started putting this white stuff in our fruit salad at work
15:42: Its a bit like water melon, except white and tasting of wet paper
15:43: We've started calling it "the edible noop"
15:43: I wonder what it is?
17:08: Why is it that HDMI cables are so insanely expensive? Frys has them for around $70
17:09: Then again you can get them on Amazon for 15 cents!
17:36: Random observation for the day. whitehouse.com isn't a porn site any more
17:36: "Whitehouse.com was founded in 1997 by Dan Parisi. Over 100,000,000 people have visited our site over the years. We are rebranding and relaunching as a Political/News/ Entertainment site in January 2008. We have been featured on hundreds of media outlets all over the world."
17:36: This came up in the context of accidentally typing python.com instead of python.org. Note that python.com is a porn site.
Tags for this post: blather( )
posted at: 17:37 | path: /blather | permanent link to this entry
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To quote from this blog post (its a bit odd that its a PDF, but whatever):
... the new expatriate regime (Exit Tax
Provision) requires expatriates to recognise gain on their assets, and imposes a
new tax on gifts and bequests by expatriates to Americans, This new provision
(styled Section 877A) is an addition to (and not a replacement of) the current
expatriation tax rules of Section 877. Under the Exit Tax Provision, certain
individuals who renounce their U.S. citizenship or U.S. long-term residents
who relinquish their U.S. residence status (collectively covered expatriates)
must recognise gain, or otherwise be taxed, on all their assets on the date they
expatriate. In addition, gifts or bequests they make to U.S. citizens or residents
after expatriation will be subject to tax at onerous estate/gift tax rates.
In other words, if you're a US resident and you leave the US permanently, then they deem all of your world wide assets sold, and then tax you on the gain. This includes retirement funds, as well as savings. Congress is proposing this as a way of funding tax relief for serving members of the US military.
Its not law yet, but still something I should pay attention to.
Tags for this post: travel( ) usa( )
posted at: 10:20 | path: /travel/usa | permanent link to this entry
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Wed, 26 Dec 2007
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I've had a Via Eden M10000 literally lying around since soon after I moved to the US two years ago, and I finally decided that it was time for a full blown home workstation the other day, having got fed up with the small screen on my laptops. Sometimes I really miss my 30 inch monitor at work, and the 24 inch I am using at home is a much better substitute than a laptop screen.
Anyway, getting the machine working was surprisingly difficult given its a three or four year old design. The problems:
- The PCI 802.11g wireless card didn't work. In fact, the machine wouldn't boot with it installed. I suspect this was a PCI version problem, as I have had pain with this card in the past.
- The PCI 802.11b wireless card I tried next wasn't much better. The connection would drop out randomly, and the machine would occasionally lock up. This was the card I used as my first access point about six years ago (using hostap), so perhaps its just old. It got swapped out as well.
- The Belkin USB 802.11g thingie didn't work reliably. It would stay connected to the network for five minutes before something went wrong. This made me annoyed, especially when it turns out this is because the latest release of Ubuntu (gutsy) installs an old version of the rt73usb driver, which is known not to work with this card. Following these instructions from the canonical wiki which tell you to install drivers from here fixed the problem. Its annoying that Ubuntu ships with known broken drivers though.
- Next, video. The video card built into the mother board sucks. I'm running a t24 inch LCD at 1920x1200, and there was significant ghosting on the monitor. Additionally, I couldn't run at 24 bit, I had to use 16 bit because the video card was running out of RAM bandwidth.
- Not to worry, I installed a Matrox G450 I had lying around, and now the monitor works nicely as well, with no ghosting.
- Finally, the whole thing is much louder than I expected from an Eden machine (there is a fan on the board, a fan in the case, and the hard disk). Then again, given I built the entire machine for $90, I can't complain too much.
Tags for this post: blog( ) toys( )
posted at: 15:25 | path: /diary/toys | permanent link to this entry
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Tue, 25 Dec 2007
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10:09: Merry Christmas to y'all
10:10: I appear to have captured a haul of Top Gear books and DVDs, scooters, and music CDs
10:10: I am rich! Rich in Top Gear!
15:17: Matthew has the best taste in food ever. I introduced him to Pomegranates the other day, and now he asks for the "red balls" all the time. He loves them!
15:17: Its a pity that there $3 US a fruit
Tags for this post: blather( )
posted at: 15:17 | path: /blather | permanent link to this entry
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I picked up the kids a set of Disney edutainment games for Christmas. We're talking 6 CDs of learning fun. The box said it works on Macintoshes (classic mode, whatever that means), and Andrew was so excited by the idea that he basically shredded the box getting in.
Of course, because its a Macintosh, we stick the game into the machine, and it doesn't work. Apparently "classic mode", which I have never heard of, means "we're too lame to have written this game in the last five years, and it only works on OS 9". This is despite the box saying the game works with OS X. Apparently PowerPC macs can reboot into OS 9, but Intel Macs can't?
So, questions. Is there a PowerPC emulator for Intel Macs? Is it expensive? I also happen to have a PowerPC mac lying around, how do I reboot it into classic mode? It doesn't seem to be an option in the reboot dialog...
I am so disappointed in Disney at the moment...
Update 1: Disney tech support is closed of course, because its Christmas. Andrew is quite sad about it all. I'm being unfair on Apple in the text above, this is entirely Disney's fault for selling games which are so hideously out of date. To give you an idea of how out of date these games are, Intel Macs have been sold since January 2006 (http://en.wikipedia.org/wiki/Apple_Intel_transition), and OS 9 was discontinued in 2002 (http://en.wikipedia.org/wiki/Mac_OS_9). These games are really out of date.
Tags for this post: macintosh( ) osx( )
posted at: 11:24 | path: /macintosh/osx | permanent link to this entry
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Thu, 20 Dec 2007
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18:26: On a bus to San Francisco -- we're going to a 1920s speakeasy!
18:26: There is even a password to get in...
Tags for this post: blather( )
posted at: 18:26 | path: /blather | permanent link to this entry
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Thu, 06 Dec 2007
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18:52: Ubuntu's month RAID check is causing jerky video playback on MythTV
18:52: Specifically, /etc/cron.d/mdadm kicks off a RAID array check on the first Sunday of the month
18:53: But with no IO limits
18:53: echo 10000 > /proc/sys/dev/raid/speed_limit_max doesn't seem to actually reduce the amount of disk IO the check is causing though
18:53: Which makes me sad
18:57: Ahhh, I was misreading the units for the /proc file
18:57: Reducing the minimum to 100 and the maximum to 500 fixes the video
18:57: But does bad things to how long the check will take
18:58: Now to experiment with upping the maximum speed, while keeping the minimum low
18:58: Hopefully that will result in it using idle disk time to sync, but not breaking video playback
Tags for this post: blather( )
posted at: 18:58 | path: /blather | permanent link to this entry
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Wed, 05 Dec 2007
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17:33: On the way to SFO to pickup Cat's mother
17:33: Traffic sucks of course
Tags for this post: blather( )
posted at: 17:36 | path: /blather | permanent link to this entry
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YouTube Traffic Characterization: A View From the Edge" from IMC 2007 is quite interesting. It tracks use of YouTube from the University of Calgary. Interesting random quote:
In total we recorded 23,250,438 valid (i.e., non-failed) HTTP
transactions (i.e., request/response pairs). These transactions account for approximately 6.54 TB of data transfer.
Only 3% of the HTTP requests were for video files; however, the corresponding HTTP responses accounted for 99%
of the total bytes transferred.
Tags for this post: research( )
posted at: 12:46 | path: /research | permanent link to this entry
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Tue, 04 Dec 2007
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Sun, 02 Dec 2007
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12:00: I didn't realize that you could resize ext3 filesystems while they were mounted. That's really cool, because adding the extra 500gb to one of my filesystems now wont take ages...
12:02: Oh, and that 500gb SATA2 disk? $99 US dollars are Frys. I'm loving how cheap disk is these days.
Tags for this post: blather( )
posted at: 12:02 | path: /blather | permanent link to this entry
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Sat, 01 Dec 2007
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Eric McCreath from the Department of Computer Science at the Australian National University and I presented a poster entitled "Inferring Relative Popularity of SMTP Servers" at USENIX LISA 2007. This blog post is a brief discussion of the content of the poster, as well as a landing page for the paper version of the poster as well as the the PDF of the actual poster. For more detail into the measurement techniques used, please check out the complete paper.
We conducted this research because there is little data on the relative popularity of the various available SMTP server implementations. This data is of interest because it aids the development of systems which interact with these servers. For example, a potential DDoS protection system should be tested with the most common SMTP servers, as these are the ones that it is most likely to encounter in everyday use.
Many businesses rely on email of some form for their day to day operation. This is especially true for product support organisations, who are largely unable to perform their role in the company if their in-boxes are unavailable. Allman in "Spam, Spam, Spam, Spam, Spam, the FTC, and Spam" states that Nuclear Research studies estimate that spam costs US businesses $87 billion a year. It seems reasonable to assume that if a low level attack is costing that much, then a complete outage would impose an even greater burden on an enterprise.
There has been little research conducted into the current state of SMTP servers on the Internet, perhaps because this area of research has not been particularly fashionable in comparison to the HTTP metrics which are commonly collected. This is an important area of research however given the level of traffic served by these systems has been growing for years. Barracuda Networks cite Radicati research which indicates that in 2009 228 billion emails will be sent per day, with the vast majority being spam (see Barracuda's site for more details). Afergan and Beverly in "The state of the email address" evaluate the state of email servers in an attempt to determine how SMTP servers are coping with the growth in traffic. Their approach involved sending out probe emails to a variety of domains. The email was crafted to have a strong assurance of bouncing because of not being addressed to a valid address. The authors then monitored the bounce traffic. They concluded that corporate SMTP servers are under surprising levels of strain and do not bounce undeliverable emails in a predictable manner.
We have therefore started to undertake research into SMTP servers as they appear on the Internet, with our first study being a simple survey of which SMTP implementations are most commonly deployed. Our poster discussed the current state of that survey, and provide some early results.
The challenge with determining the popularity of various SMTP server implementations is twofold -- firstly, not all of the SMTP servers which interact with the Internet are able to be probed from the public Internet (for example SMTP routers which route email that came from the Internet, but are not themselves accessible from the Internet); and secondly the sheer number of SMTP servers connected to the network. We have therefore used both passive and active measurements to survey these servers. Each of these measurement techniques is described below.
Bearing in mind that our survey is quite new, and that only 34.6 million IP addresses have been probed so far, the initial results are quite interesting.
You can see from the graph that the most popular SMTP server in our dataset is Microsoft Exchange, followed by Postfix and then Sendmail.
Additional analysis of our existing data, as well as further development of the email parser will improve the accuracy of our survey, which will also increase the number of machines included in the survey. The survey also needs a wider set of inputs for possible IP addresses to probe -- one example of another possible source of probable SMTP servers is MX records for registered domain names. The distributed probing system needs further development to handle the scale of the proving required for a large number of SMTP servers to be included in the survey, and improvements to the reliability of the central server are also required.
This SMTP survey is in its early stages, and there is much work still to do. However, research of this nature is likely to produce results which are of interest to both the research community, as well as software developers and systems administrators. So far a small dataset has been analysed, which has resulted in a reasonably robust distributed probing system being constructed. Further work on the survey will continue in the future, with updated results being published from time to time.
Tags for this post: research( ) smtp( ) survey( )
posted at: 15:27 | path: /research/smtp/survey | permanent link to this entry
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Tue, 27 Nov 2007
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Sat, 24 Nov 2007
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08:52: Farewell Mr Howard
08:53: I wont miss you at all
09:33: Annoyed. One of the tuners in the MythTV box started failing to change channels, and now I have a bunch of infomercials recorded instead of something interesting
09:34: MythTV doesn't store with the recording what tuner was used -- which makes it harder to debug
Tags for this post: blather( )
posted at: 09:34 | path: /blather | permanent link to this entry
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Fri, 23 Nov 2007
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10:17: I've been catching up on the new Doctor Who episodes (2005 onwards, I'm up to 2006 at the moment)
10:18: Matthew has developed a liking for them
10:18: Although we have to limit the episodes he sees
10:19: He really likes the "End of the World" episode from the 2005 season
10:44: Chipotle is interesting -- they certainly have a much higher food quality than many other stores
Tags for this post: blather( )
posted at: 10:44 | path: /blather | permanent link to this entry
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Thu, 22 Nov 2007
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19:01: I've been back in Mountain View for a couple of days now
19:02: In time for Thanksgiving and all that
19:03: Thanksgiving is cool, as Gord is known to say "Thanksgiving is a cool holiday. You don't have to buy anyone stuff, you get all the yummy food, and a holiday (it's like christmas without the annoying bits)."
19:03: We got a good price on a turkey at Safeway, so I gave it a go. Apart from not being very good at carving, it turned out well
19:03: And now we're drinking wine and watching Doctor Who on the MythTV box. What could be better?
19:06: Oh, and the Chaser "vodcasts" all its episodes in full. So cool. I've subscribed to them with mythnettv.
Tags for this post: blather( )
posted at: 19:06 | path: /blather | permanent link to this entry
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Mon, 19 Nov 2007
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Sun, 18 Nov 2007
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Fri, 16 Nov 2007
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Catherine (who is in California while I swan around Texas) reports that the maliciously loud neighbours are moving out! Yay for sleep!
Tags for this post: blog( )
posted at: 13:13 | path: /diary | permanent link to this entry
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Tue, 13 Nov 2007
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Catherine is right -- when we move back from America we wont be living in an apartment if I have any say in it.
Tags for this post: blog( )
posted at: 08:43 | path: /diary | permanent link to this entry
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Sun, 11 Nov 2007
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Mon, 05 Nov 2007
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Sun, 04 Nov 2007
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08:12: At the airport again
08:12: This time its a San Francisco -> Dallas -> Atlanta flight
08:12: Off to visit some folks in the Atlanta office for meetings and so forth
12:40: Wow. DFW is _big_
12:45: And people really do wear cowboy hats in Texas!
Tags for this post: blather( )
posted at: 12:45 | path: /blather | permanent link to this entry
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Wed, 31 Oct 2007
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15:58: Another quake!
15:58: http://quake.usgs.gov/recenteqs/Quakes/nc51189819.html
16:00: This time a 3.7
16:00: Heh, in fact, there have been quite a few recently...
16:00: map 1.6 2007/10/31 15:56:05 37.431N 121.779W 7.6 8 km ( 5 mi) NNE of Alum Rock, CA
16:01: MAP 3.7 2007/10/31 15:54:24 37.434N 121.780W 7.6 8 km ( 5 mi) NNE of Alum Rock, CA
16:01: map 1.1 2007/10/31 15:37:19 37.438N 121.756W 12.4 10 km ( 6 mi) NE of Alum Rock, CA
16:01: map 1.2 2007/10/31 14:14:47 37.402N 121.751W 8.2 8 km ( 5 mi) ENE of Alum Rock, CA
16:01: map 2.2 2007/10/31 12:41:24 37.432N 121.778W 8.5 8 km ( 5 mi) NNE of Alum Rock, CA
16:01: map 1.5 2007/10/31 12:14:43 37.427N 121.772W 9.3 8 km ( 5 mi) NE of Alum Rock, CA
16:01: map 1.2 2007/10/31 10:48:22 37.415N 121.765W 6.4 8 km ( 5 mi) NE of Alum Rock, CA
16:01: map 1.3 2007/10/31 09:31:18 37.422N 121.770W 6.8 8 km ( 5 mi) NE of Alum Rock, CA
16:02: map 2.3 2007/10/31 07:14:50 37.366N 121.728W 8.1 9 km ( 5 mi) E of Alum Rock, CA
16:02: map 1.3 2007/10/31 06:24:15 37.329N 121.698W 6.7 12 km ( 7 mi) ESE of Alum Rock, CA
16:02: map 1.1 2007/10/31 04:36:59 37.400N 121.749W 8.3 8 km ( 5 mi) ENE of Alum Rock, CA
16:02: map 1.0 2007/10/31 04:17:47 37.398N 121.746W 8.3 8 km ( 5 mi) ENE of Alum Rock, CA
16:02: map 1.8 2007/10/31 04:06:29 37.375N 121.731W 8.3 8 km ( 5 mi) E of Alum Rock, CA
16:02: map 1.0 2007/10/31 04:03:57 37.414N 121.763W 7.1 8 km ( 5 mi) NE of Alum Rock, CA
16:02: map 2.8 2007/10/31 02:57:51 37.367N 121.728W 8.2 9 km ( 5 mi) E of Alum Rock, CA
16:02: map 1.2 2007/10/31 02:17:49 37.330N 121.698W 7.4 12 km ( 7 mi) ESE of Alum Rock, CA
16:03: map 1.1 2007/10/31 01:42:28 37.416N 121.755W 10.1 8 km ( 5 mi) NE of Alum Rock, CA
16:03: map 1.7 2007/10/31 01:21:13 37.404N 121.750W 8.4 8 km ( 5 mi) ENE of Alum Rock, CA
16:03: map 2.2 2007/10/31 01:05:51 37.424N 121.770W 4.8 8 km ( 5 mi) NE of Alum Rock, CA
16:03: map 1.9 2007/10/31 00:49:47 37.331N 121.699W 7.1 12 km ( 7 mi) ESE of Alum Rock, CA
16:03: map 1.7 2007/10/31 00:02:54 37.406N 121.750W 8.6 8 km ( 5 mi) ENE of Alum Rock, CA
16:03: map 1.1 2007/10/30 23:30:21 37.415N 121.755W 7.6 8 km ( 5 mi) NE of Alum Rock, CA
16:03: map 1.5 2007/10/30 23:26:59 37.404N 121.749W 8.4 8 km ( 5 mi) ENE of Alum Rock, CA
16:03: map 1.6 2007/10/30 23:03:36 37.424N 121.768W 11.3 8 km ( 5 mi) NE of Alum Rock, CA
16:03: map 2.0 2007/10/30 23:02:16 37.427N 121.773W 9.4 8 km ( 5 mi) NE of Alum Rock, CA
16:03: map 1.1 2007/10/30 22:11:15 37.374N 121.722W 7.7 9 km ( 6 mi) E of Alum Rock, CA
16:04: map 1.4 2007/10/30 21:38:50 37.412N 121.763W 7.3 7 km ( 5 mi) NE of Alum Rock, CA
16:04: map 1.4 2007/10/30 21:30:51 37.426N 121.772W 7.5 8 km ( 5 mi) NE of Alum Rock, CA
16:04: map 1.2 2007/10/30 21:23:39 37.413N 121.756W 9.8 8 km ( 5 mi) NE of Alum Rock, CA
16:04: map 2.1 2007/10/30 20:41:31 37.397N 121.747W 8.7 8 km ( 5 mi) ENE of Alum Rock, CA
16:04: map 1.7 2007/10/30 20:39:29 37.427N 121.770W 9.1 8 km ( 5 mi) NE of Alum Rock, CA
16:04: map 1.3 2007/10/30 20:35:02 37.345N 121.705W 8.9 11 km ( 7 mi) ESE of Alum Rock, CA
16:04: map 1.8 2007/10/30 20:31:57 37.430N 121.772W 9.5 8 km ( 5 mi) NE of Alum Rock, CA
16:04: map 1.4 2007/10/30 20:26:53 37.404N 121.749W 8.4 8 km ( 5 mi) ENE of Alum Rock, CA
16:04: map 1.3 2007/10/30 20:22:44 37.428N 121.777W 8.9 8 km ( 5 mi) NNE of Alum Rock, CA
16:04: map 1.6 2007/10/30 20:16:12 37.404N 121.750W 8.2 8 km ( 5 mi) ENE of Alum Rock, CA
16:04: map 1.3 2007/10/30 20:13:48 37.403N 121.749W 8.2 8 km ( 5 mi) ENE of Alum Rock, CA
16:05: map 1.5 2007/10/30 20:12:55 37.419N 121.745W 11.1 9 km ( 6 mi) NE of Alum Rock, CA
16:05: map 1.4 2007/10/30 20:12:23 37.409N 121.675W 7.3 14 km ( 9 mi) ENE of Alum Rock, CA
16:05: MAP 5.6 2007/10/30 20:04:54 37.432N 121.776W 9.2 8 km ( 5 mi) NNE of Alum Rock, CA
16:05: (Source http://quake.usgs.gov/recenteqs/Quakes/quakes0.htm, although they'll scroll off that page)
19:09: We just had our first trick or treater ever
19: | |
