Older blog entries for pcolijn (starting at number 63)

28 Feb 2005 (updated 28 Feb 2005 at 07:35 UTC) »
Adventures with Karma

So I got my Karma replaced. They were actually stunningly efficient; I called, got an RMA number, sent it to them and had a new one, all in under a week.

Now, naturally, I want to put some songs on it. Previously I'd used the Java app it comes with to do this from OS X, and that worked fine, except that it's slow. On an 11mbps wireless link, it takes about a minute per ~5MB song. It should take at most 6 or 7 seconds; 802.11b (with good signal strength) is faster than 1MB per second (which is still faster than USB 1.1, which is my other alternative).

The funny thing is, I used the Java app on a friend's Windows machine at Christmas, and it was nice and snappy, so I guess Mac OS X's Java VM has super crappy networking or something. So I figure hey, this is Java, right? I'll just run it in Linux; maybe the VM there has better networking. You can actually get a Java VM for Linux/PPC from IBM.. except that when you try to run the Karma transfer program it dumps core. Great. Write once, run anywhere my ass.

So then I see libkarma. Looks promising.. except that it's horribly written, segfaults all over the place and does fun stuff like returning pointers to buffers on the stack. So then I just cut my losses and write a simple app using WvStreams to copy files to the Karma, and guess what? It doesn't take a minute per song!

I don't know why people haven't done more with the Karma. It's got networking for crying out loud! And the protocol is documented! You can definitely do some cool stuff with that, so it's surprising nobody has, especially since people have written gnome-vfs backends and KIOSlaves for the Rio 500. Anyway, my plan is to write a fuse filesystem for it so I can just mount the sucker.

Moral of the story: don't buy a Karma unless you really like tinkering.

Work

Was super busy for a while, but a bit less so now. It looks like I'm going to have to write a bunch of Java code soon-ish, which will be, uh, interesting, since I've not written any Java code in years.

In an effort to re-familiarise myself with Java today, I've been looking at the new generics implementation in Java 5 (apparently that's the correct thing to call it; will Sun ever stop having rediculously stupid version numbers?)

It turns out that to support backwards compatibility, they've used erasure to implement generics in Java. So you can do this:

public String joinStrings(Vector<String> listOfStrings, String delim);

And then if you pass it just a Vector, or a Vector<Integer>, you'll get an error (which is what you want).

But then you can also do this:

public String joinStrings(Vector listOfStrings, String delim);

And pass in Vector<Integer> if you like. I can see that if you want old class files and old code to work on the new VM and with the new compiler, you need this kind of thing, but it makes generics considerably less useful.

Another nice tidbit is that you can never do new T(); inside a generic class, because the type information is gone, so the compiler doesn't know if the type replacing T provides a no-parameter constructor. So what you see is that in the actual JDK, the code written by engineers at Sun, they're doing nasty things like T[] foo = (T[])new Object[size];

The other way around this is to pass in a Class object of the appropriate type:

public class Generic<T>
{
    Class<T> tClass;
    public Generic(Class<T> tClass)
    {
        this.tClass = tClass;
    }
    public void Foo()
    {
        T myT = tClass.newInstance();
        // ... do stuff with myT
    }
}

Yeesh. It seems like there are a lot of these kinds of things in Java; things you want that are there, but only in a half-baked, semi-useful way.

Notice that I dissed Java without even touching on the GC or VM. Those are old, old debates and everybody has opinions on them, so whatever.. apparently that stuff is better these days, but I have no idea.

Hula

Like most, I was pretty excited to see Novell getting into this space in an open source fashion. I finally got some time today and played around with it a bit. Previously, I couldn't even get it to compile on non-2.6 systems and then I could get it to compile but it would segfault immediately. Now the latest stuff in svn finally seems to be working.

So, first off, it's pretty, but it's not really usefully pretty. IMO there's far too much graphics. This is a web app, and the web is slow. Most people use dialup. No, really, they do. Even now.

I also don't really like the fact that creating a calendar event is like writing an email, with a "to", "cc", etc. Sure, maybe you want to invite people if it's a meeting, but not always (eg. doctor's appointment). I don't know what to put there. My email? My name? My username?

Also the "new event" page feels like filling out a form. I don't like forms, and I especially don't like web forms. Give me a better way to do this, by clicking on a time in the day view or something. Oh, yeah, why does the day view have no times? Most calendar apps show you the hours of the day in day view, not just a summary of your events. That's a much more useful visual representation, IMO.

Now I don't mean to be overly critical. I realise this project just got started and of course I really hope it turns into something great; a solid web mail/calendar/contacts app is sorely missing from the open source stack, but some of the initial design decisions are a bit worrying, in that it seems at risk of becoming "yet another Horde."

Deniz

I just found out that my coworker and friend Deniz Sarikaya has passed away. It came as a complete surprise to me that someone so full of vigour and so lively could be removed from our lives like this. I have great memories of the summer at Niti with her, and I don't think anyone would disagree that she brought a warmth and liveliness to the office that will be sorely missed.

Nitix

Several people today, after seeing my T-shirt, asked me about Nitix. Where do I sign to get my free advertising bonus?

Sci Fi

So, Enterprise is officially cancelled, barring any fan-supported rescue. I watch it, and I'm ashamed of it, because it's so bad, so I'm not really sad to see it go. But it is a shame there won't be any new Star Trek.

On another note, iMac brought all the Firefly DVDs with him, and we've been watching those. It's a pretty good show, so my desire for decent sci-fi is being satisfied for the moment.

And for when I'm finished those.. I bought the entire Star Trek TNG series on DVD. All 7 seasons, 48 DVDs. Oh baby. Only cost me $130 incl. shipping on eBay. It's gonna be good. I was thinking it'd be fun to index the subtitles so I can search for episodes. With 48 DVDs, you want to know exactly which one contains the episode you're looking for...

Projector

So mag, being the monkey man that he is, bought a projector. It's only 800x600, but it's nice and bright and is pretty damn decent for playing Smash Brothers or Star Fox 64, not to mention watching movies. Last night we watched Kill Bill, and the other day pphaneuf expressed his undying love for me on it.

Weekend

We're going to the Computer History Museum today. Should be interesting. drheld has also convinced me to see Sideways tonight, which is supposed to be good. Then there's talk of cheesecake. Mmm, cheesecake. The thing is there's this cheesecake place around here that also serves normal meals, but their meals are so big that if you go for a meal you won't be able to have cheesecake. So it looks like dinner today will be a very healthy piece of cheesecake. Meh, whatever, I eat enough healthy food at Google during the week.

Karma

It broke again. So I'm going to send it in and get it replaced, and hopefully the new one won't exhibit the same problem. But apparently it's pretty common with these things, so if you're looking for a portable player that plays Oggs, I can't recommend it.

Debian

So, after a fair bit of tweaking, I have the Debian on my laptop setup decently, with Ion as my window manager. Ion just makes more sense on a laptop, where your mouse probably sucks and your resources are probably more limited (and they certainly are on my laptop :) Although to get certain settings, I have to run gnome-settings-daemon from my .xinitrc, which doesn't seem to be mucking too much stuff up yet, but apparently it horribly screwed some stuff up for mag and drheld, so I guess we'll see. They had some weird Xresources problem I think.

Life

I haven't blogged too much about the goings on down here. Mostly because my laptop was semi-functional and I was too lazy to actually nab pictures off my camera. But we've been having a lot of fun. Last weekend we walked around Stanford.

mag and drheld ride the, uh, the thingy

Stanford has a pretty darn nice campus, of course, with a big forest, nice grassy areas, a statue garden and a cactus garden. But that doesn't mean it escapes America's more crass customs...

You know you're in America when...

And did I say cactus garden? Actually I meant penis garden.

The rare species penis catusitis.. er sumthin (no actual penis filmed here.. don't worry :)

This weekend we went with our landlord, a very strange but well-meaning guy, for a drive around the coast and a bit of a hike. It was nice, and it was good to get out of Palo Alto for a bit. And I hadn't seen the Pacific in over a year, so that was fun.

Sunset from Highway 1

Finally, I leave you with the "inverse mohawk" with which I was temporarily endowed.

It's all the rage these days

Gaim

hub: My biggest complaint about Gaim is this:

I can make Gaim almost usable if I minimise my buddy list and chat window, put them on all desktops (in GNOME), use audio notifications (notification icon would be much nicer though) and turn off window raise. Window raise pisses me the hell off, because I'll be typing in Vim or something, and a freaking window will pop up and steal focus. So I'll end up telling my friend something like "foo.bar();" Not to mention it completely disrupted my train of thought, etc.

So fine, I set everything up that way. What's the problem? As soon as a new buddy (i.e. one for which there is no tab in my message window) messages me or I double-click a new buddy to add a tab to my message window, the window becomes "un-sticky" again. Meaning I have to re-stick it, or I'll lose it among all my desktops.

If they just made it so the message window didn't steal focus when it popped up, I could stand to use the pop-up mode. But my ideal way to use it would be to have a notification icon, no sounds, no popups, and no stupidly becoming "un-sticky". Ah well, maybe someday...

mplayer

So I recently installed Debian on my laptop, because Ubuntu just wasn't doing it for me (long story). I found a deb source with a PPC mplayer and installed it. Great. So I fire it up and try to watch something, but it's insanely slow and the audio is out of sync and it isn't full screen (well it is, but it's not scaled, so there's a tiny video in the middle of the screen).

After reading the man page for a while, it turns out that the magic incantation to make things not suck is mplayer -cache 8192 -vo xv -zoom <filename>. Oh, of course. That's so obvious. If that's what makes it not suck, why the fork isn't that the default!? Sigh. I mean it's not hard to detect that I have XV and use it, and it's obviously not hard to detect that I need cache because if I don't use it, it prints a message telling me to. Clue for the clueless: if you're going to print a message telling the user to turn on an option, just turn the bloody thing on already!

Totem did work out of the box, of course, but turned out to be not quite fast enough to play things smoothly. It usually is my preferred video player though, for precisely the above reason.

That was this week's cynical software rant. Be sure to join us next time :)

Noogling

I've officially survived more than a week at Google, and here's what I've got to show for it:

I'm officially a "Noogler"

My cube-mate apparently wore hers home the day we got them. Mine's still at the office :)

Flex Hours

So I guess flex hours were partially rescinded at Niti, based on PlaNit. Wow. Times change, eh? I was definitely one of the "baddies" when I was there, typically showing up between noon and 1. But I often worked until 2am, and I liked it that way, and it made me happy to sleep until 11:30.

Now, you might read that and think either:

  • I worked insanely hard and killed myself at Niti.
  • I'm so insanely stupid that it took me a billion years to get anything done at Niti.
In fact, neither of these is true (well, there's evidence that I'm insanely stupid, but it didn't take me a billion years to do stuff at Niti). It's just that I found that during the day at Niti, I wasn't all that productive. I talked to people, helped people with their problems, they helped with mine, I made espresso, played foosball, etc. At night, when nobody was around, I could just blast through the bugs (and espresso) like nobody's business. I guess the same effect could have been acheived by showing up insanely early, but I just can't think very well before 11 or so. I tried going to bed early and getting up early in Waterloo for a while, and it just didn't work for me...

At Google there are flex hours too, although almost everybody is in by 11 so you feel a bit odd showing up much later. The funny thing is people were still there tonight when I left at 12:30. Typical silicon valley hardcore-ness I guess. I've taken to showering there (which makes sense, since I cycle in) thus avoiding the 4 to 1 person to shower bottleneck at our home in the morning, giving me a few more minutes of sweet, sweet unconsciousness :)

Proprietary software

So the last few days I've been dealing with a binary-only shared library provided by a certain software vendor. All I have is the header, a PDF doc, and a .so. But this particular software vendor is particularly evil, in that their header file blatantly lies. It lies by telling you some functions want a foo * instead of a foo **, and your stuff is segfaulting all over the place until you objdump the .so to look at the asm and realise it's dereferencing twice. (I became very intimately familiar with objdump during my training; it's a life saver).

And then there's the PDF API docs, which also blatantly lie, by telling you stuff like "If you pass in a foo ** here, we'll point it to something valid with some stuff in it." No you won't, you liars, you'll just leave it as NULL. I mean the least you can do if you're going to release a binary-only .so is have some decent docs and accurate headers.

Fortunately, I've managed to work around most of this crud and should be ready for my first code review tomorrow. My first checkin will involve no less than 5 languages. Fun stuff.

16 Jan 2005 (updated 16 Jan 2005 at 09:46 UTC) »
Google

I gotta say, it's pretty damn sweet. The thing that bothers me the most is probably how confidentiality-happy they are. drheld mentioned that in a previous post, and I feel similarly. People ask me what I'm working on, what I'm doing, etc. and I have to be careful not to be too specific, which I'm totally not used to.

But I'm definitely enjoying the work I'm doing. This week I've been doing a lot of hacking in Ruby, which I didn't really expect at all. But so far I've been enjoying it; I like how you can define mutator members to essentially override '=', and its syntax is terse while still being relatively clean.

One of the things that's been hard to get used to is the scale of it all. Google is bigger than any other company I've worked for, by orders of magnitude. And it's apparent everywhere; many things are more bureaucratic, and there's a kind of "lushness" to it all, from the food to the on-site gym to the massages and car washes, it all just seems a bit surreal at the moment.

Life

I've borrowed a pretty sweet road bike for while I'm here, and I've used it to cycle to work a few times. I even have the clip-in shoes (alright I'll admit it; I did fall once the first time I used them :) I've never had a road bike and it's pretty cool. You sure can go pretty damn fast; I was doing 60 the other day for a while. The downside, of course, is that you really can only use the thing on roads. Gravel of any kind is a serious no-no, so I can't go explore any bike trails near here unless I borrow somebody else's bike.

Got a bank account the other day, without a social security number! Take that, homeland security! That brings the number of countries in which I have accounts to 5.. I should really close some of the ones I don't use sometime. It has a whopping $20 USD in it right now, but at least I can in theory get paid. I'm thinking Monday will be "get social security number day" (or rather, "apply for SSN day"), a process that is apparently not much fun.

Rio Karma

So, I had the damn thing for about a week, and then the other day the disk went and died on me. So now I have to go and try to get it fixed or replaced, and I'm obviously wondering whether it was a good decision in the first place.. sigh. I didn't want to go iPod because of the whole Ogg thing, but at least iPods work. I guess I'll get it fixed and see how it goes, but I don't think I can really recommend it any more...

Update: So I Googled around a bit tonight about the problem I was having with my Karma. Apparently some people had managed to make previously-busted Karmas work again by smacking them against blunt objects. I figured I didn't really have anything to lose, so I tried it, and it worked. My Karma now starts up again and appears to be working normally. The only thing is.. maybe I should have left it broken so I could have gotten it replaced. Now I feel like I have to break it again to be able to send it in.

But if smacking it against stuff fixes it.. how the block do I break it??

54 older entries...

New Advogato Features

New HTML Parser: The long-awaited libxml2 based HTML parser code is live. It needs further work but already handles most markup better than the original parser.

Keep up with the latest Advogato features by reading the Advogato status blog.

If you're a C programmer with some spare time, take a look at the mod_virgule project page and help us with one of the tasks on the ToDo list!