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Google Rolls Out Chrome 7

lagfest Re:I don't know about everyone else... (292 comments)

Yes, Chrome has always done this. Apparently it saves on the support budget to have a single version of chrome for all users (just like pretty much every other google product).

about 4 years ago

After a Decade, Digital Radio Still an Also-Ran In UK

lagfest Re:Hmm, I wonder (200 comments)

The DAB bitrate is variable, giving talk radio lesser bitrates, and classical music larger bitrates.

more than 4 years ago

Google-Backed Wind-Powered Car Goes Faster Than the Wind

lagfest Re:Apparent Wind (393 comments)

It works because you are using a fraction of the applied power to create a counter force to your source of power.

Remember your old toy, the yoyo? Put it on the floor with the string extended to it's entirety, now pull the string until it's in your hand.

How far did your hand travel? how far did the yoyo travel?

more than 4 years ago

Your Computer Or iPad Could Be Disrupting Sleep

lagfest Re:f.lux (351 comments)

Even better: get a display with an ambient light sensor.

more than 4 years ago

How To Play HD Video On a Netbook

lagfest Re:And? (205 comments)

Slashdot crashes for a day, then upgrades the user id field to a bigint.

at least, that's what happened when comment id (24 bit unsigned) hit the ceiling.

more than 4 years ago

Suggestions For a Coax-To-Ethernet Solution?

lagfest Re:Use the Coax as a wirepull for the cat5 (608 comments)

Because coax was so unreliable it would make network admins cry.

In the good ole lan party days, the network would be disrupted every time someone needed to connect or disconnect a pc. Sometimes you had T piece that was a bit faulty and that also nuked the network. And when you had 12 machines on the network, finding the source of the error was even harder.

Performance was only a secondary reason for it's demise.

more than 4 years ago

86% of Windows 7 PCs Maxing Out Memory

lagfest Re:Junk characters (613 comments)

So they are called Junk characters because they are used to portrait a naked mans penis? What a coincidence :)

more than 4 years ago

86% of Windows 7 PCs Maxing Out Memory

lagfest Re:When do people get this (613 comments)

"You obviously don't understand memory access design. It's all about feeding the CPU. There are two sorts of relationships we can use to make this work: temporal and sequential.

Hard drives are the largest-capacity storage (well unless you want to go to tape). But they're slow. Even the fastest high-RPM SCSI or SATA drives are SLOW compared to what's above them. This is mitigated, somewhat, by putting some cache memory on the drive's controller board itself. Still, having to hit the hard drive for information is, as you say, a slowdown. Same goes for external storage (Optical media, USB media, etc).

So you try to keep as much information as possible in RAM (next step up). Hitting RAM is less expensive than hitting the H/D in terms of a performance hit. In the original days of computing (up until the 486DX line for Intel CPUs), RAM and CPU operated on a 1:1 clock speed match, so that was that.

Once you factor in the clock multiplier of later CPU's, even the fastest RAM available today can't keep from starving the CPU. So we add in cache - L3, L2, and L1. the 486 implemented 8KB (yeah a whole 8K, wow!) in order to keep itself from starving. L3 is the slowest, but largest, L2 is faster still but smaller, and L1's the smallest of all, but the fastest because it is literally on the same die as the CPU. That distinction is important, and in general you'll find that a slower CPU with more L1 Cache will benchmark better than a faster CPU with less.

The CPU looks for what it wants as follows:
- I want something. Is it in L1? Nope.
- Is it in L2? Nope.
- Is it in L3? Nope.
- Is it in RAM? Nope.
- Is it in the H/D Cache? (helps avoid spin-up and seek times) Nope.
- Crap, it's on the H/D. Big performance hit.

Everything except for the L1 check, technically, was a performance it. The reason for pre-caching things (based on temporal and sequential relationships) is all about predicting and getting what will be needed next into the fastest available place.

Yes, I suppose you can run an entire system where it all goes into RAM, and you'll see it as more responsive simply because you never have to touch the hard drive. But turning off HDD caching is a BAD idea. It makes cache misses that much more expensive because then, instead of having even the chance of finding what you needed in RAM or in the HD's onboard cache, you have to wait for the H/D to spin up and seek to the right sector."


more than 4 years ago

86% of Windows 7 PCs Maxing Out Memory

lagfest Re:When do people get this (613 comments)

My current* windows 7 stats say:
Total: 2046MB
Used: 1.26GB
Cache: 634MB
Available: 743MB
Free: 132MB

So used RAM does not include cache. And 'available' is a nice way of telling grandma that RAM used for cache is actually available to apps.

* not a snapshot, i can't type that fast :)

more than 4 years ago

Framerates Matter

lagfest Re:Where it matters most. (521 comments)

Most games on the Quake 3 engine have that. 125 fps was the sweet spot.

more than 4 years ago

Opera 10.5 Pre-Alpha Is Out, and It's Fast

lagfest Re:I tried it out earlier (274 comments)

I got mod points, but I couldn't find +1 disturbing.

more than 3 years ago

"2012" a Miscalculation; Actual Calendar Ends 2220

lagfest Re:Assuming... (600 comments)

The mods agree. That's not even remotely plausible, this being slashdot and all.

more than 4 years ago

AMD Packs Six-Core Opteron Inside 40 Watts

lagfest Re:2P ... (181 comments)

or not 2P, that is the question.

It might get unpleasant if you hold it in too long.

more than 5 years ago

GPL Case Against Danish Satellite Provider

lagfest Wait, so all they have to do is... (297 comments)

Change some text in the eula, give a link to whatever distro they are using and provide an object file so that it can be re-linked to an updated version of uClibc. that's one meaty lawsuit you got there mister.

more than 5 years ago

Gaming On Windows 7

lagfest Re:"2GB-maximum 32-bit" (554 comments)

And he's right, there is a 2GB Application memory limit, 3GB with LargeAddressAware. And then there's the 4GB OS memory limit, which you were sarcastically referring to.

more than 5 years ago


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