jlebar

68 ms·

661.
by jlebar 14y ago
Try tcmalloc. Among the many problems with glibc's malloc (when I tested, anyway) is that it slows down considerably as soon as you start up a thread, even if you immediately shut it down.
662.
by jlebar 14y ago
Merely making an HTTP request to a site -- any HTTP request, as far as I'm aware -- is sufficient for that site to set a cookie on your machine. If on the other hand the site wants to store something in localstorage, the site has to run JS
663.
by jlebar 14y ago
Ahh, I see.
664.
by jlebar 14y ago
Use reflection to read n. Reflection lets you bypass |private|.
665.
by jlebar 14y ago
I don't know if that's an oversight or an intentional omission, but "Firefox Engineering" is code for "Firefox front-end coding". That may or may not be the sort of UI/UX work you're interested in. If you want to do an internship and do de
666.
by jlebar 14y ago
AFAIK our Berlin office is not fully armed and operational just yet, but we often hire people to work remotely.
667.
by jlebar 14y ago
Don't forget about us for next year!
668.
by jlebar 14y ago
San Francisco / Mountain View / London / Paris / Tokyo / Taipei / Auckland / Toronto / Vancouver / or REMOTE Mozilla is hiring! Interns, developers, PMs, marketers, you name it. http://careers.mozilla.org/en-US/
669.
by jlebar 14y ago
I was just talking about this with some other Firefox developers today, actually. So...yes, there's a chance. Not a very big one, mind you. But a guy can dream!
670.
by jlebar 14y ago
Have you guys thought about memory management in the ArrayBuffer "heap"? One can decommit pages from a real heap, which can be a pretty important optimization.
671.
by jlebar 14y ago
Firefox is quite complicated; we have code written in C, C++, JS, Python, Make, m4, plus at least three custom IDL formats. grep handles these with ease.
672.
by jlebar 14y ago
I regularly search my whole Firefox clone for keywords. If this takes 2s, that's plenty fast; if it takes 20s, I'd have to come up with some other way of doing it.
673.
GNU grep is 10x faster than Mac grep(jlebar.com)
122 points by jlebar 14y ago|65 comments
674.
by jlebar 14y ago
Ironically enough, I think this guy misunderstands TSP. I wrote this comment on his blog: Let's define a new problem, TSP-cost-optimize, which returns the cost of the best Hamiltonian. It's NP-Complete, because it reduces to TSP-decide: J
675.
by jlebar 14y ago
I filed a bug. https://github.com/robohornet/robohornet/issues/67
676.
by jlebar 14y ago
The OP's suggestion has nothing to do with net neutrality. Net neutrality is about the /network/ being neutral to what it carries. The network should deliver skype, or google, or HN, or whatever, and treat them all the same. The network o
677.
by jlebar 14y ago
I wonder if this actually teaches you the right kind of muscle memory. I have no difficulty with hjkl for navigating in Vim, but I had trouble associating those keys with the string "move <up/down/left/right> one character". Mapping
678.
by jlebar 14y ago
> I don't use many addons You really should try running Firefox in safe mode; as others have said, it's not the number of add-ons you're running which is significant, but rather whether any one of them leaks the world. http://support.m
679.
by jlebar 14y ago
> Every time, Mozilla devs claim all the bad bugs will be > fixed in the next version. Wait a second. Did we say this anywhere this time? Read tfa; does it claim to have fixed "all the bad bugs", or even all the memory leaks? The
680.
by jlebar 15y ago
Well, you must have been command mode. Try pressing "i".
681.
by jlebar 15y ago
> Well, I'd say a hash that has no need whatsoever to be tamper-proof (no attackers, ever) and cares only about speed is a checksum -- so maybe a terminology issue. Cityhash, spookyhash, and murmurhash are three modern non-cryptographic
682.
by jlebar 15y ago
Yeah, I don't know what the "P" in "TP" stands for. Maybe "pageset". "T" is for "Talos". It's version 5. Or at least, the previous one was TP4 -- I don't know if there was a TP3. :) > So 'after TP5' means after loading a manually c
683.
by jlebar 15y ago
You mean, like "my systems have 16GB of RAM - I want Firefox to use as much memory as possible to speed up my experience."?
684.
by jlebar 15y ago
> So if slimming down FF will make my disk trash more, > that's the wrong direction to take. We explicitly don't want to cause this. When we reduce the number of nodes in the live object graph, our garbage collector and cycle colle
685.
by jlebar 15y ago
Maybe I lack the proper zen, but I haven't found this to be true at all. Here's a good bash FAQ. It contains questions like "how do I use associative arrays", with answers like "this is a complex question." I don't even have to ask in an