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One Developer's Experience With Real Life Bitrot Under HFS+

washu_k Re:28 files in 6 years is a hardware defect (396 comments)

Bad RAM could have corrupted the file as it was being written to disk. The file is corrupted all along, but not the disk/filesystem's fault

Or the file could have been corrupted in RAM on read, and would actually be fine if read on a working machine.

Or the disk has been replaced in those 6 years and the file was corrupted during the copy because of bad RAM

There are lots of possibilities for the file to get corrupted that don't involve the disk or filesystem.

about 3 months ago

AMD Preparing To Give Intel a Run For Its Money

washu_k Re:Best low-cost CPU with half-decent GPU? (345 comments)

No, there really isn't an equivalent. Which is more important, CPU power or GPU power?

The closest AMD in price with a GPU is the A6-6400K. It would be quite a bit better in the GPU department, but MASSIVELY worse in the CPU department. Not even close in CPU power. To get something that wont cripple you on CPU you would need to go up to the A8-6600K, but that is over $110 at the CAD stores I checked and would still be way worse in single thread CPU.

There are also the new Kabini CPUs and the top end of those, the Athlon 5350, is around $70. It would save you money on the MB (AM1 boards are cheap), but would be even worse than the A6-6400K in CPU and might not even match the G3240 in GPU.

about 4 months ago

XWayland Aiming For Glamor Support, Merge Next X.Org Release

washu_k Re:Remote display across network? (83 comments)

Neither VNC or RDP require that the server have any local video capabilities. It is quite possible to run a Windows server headless.

RDP can remote single applications and has been able to for years. No full desktop required.

about 6 months ago

PC Shipments In 2013 See the Worst Yearly Decline In History

washu_k Re:Better than Atom N450 (564 comments)

Both the AMD E2 or Celeron 847 will smoke an Atom N450 in performance. Both are just fine for an average email/web surfing box assuming the rest of the system isn't complete crap. Both have way better graphics as well with the edge going to the E2, but the Celeron has much better CPU performance.

about 8 months ago

PC Shipments In 2013 See the Worst Yearly Decline In History

washu_k Re:Current PCs are good enough. (564 comments)

Clock speed doesn't mean everything. Remember when the P4 first came out and a P3 of 400-500 lower MHz could keep up with it? Sandy Bridge has very good IPC. I have a laptop with an i5-2467M and I have it configured to lock the speed at a mere 800 MHz when on battery and I don't even notice unless I try to do something CPU intensive. It does have an SSD an 8 GB of RAM though.

As 0123456 said, a Celeron 847 is about twice the speed of a 3.8GHz P4. The Celeron actually has MORE cache than the P4 in total (548K more to be exact). Plus it likely would have faster memory and a much faster interface to the rest of the system components.

about 8 months ago

PC Shipments In 2013 See the Worst Yearly Decline In History

washu_k Re:Current PCs are good enough. (564 comments)

You do realize that a Celeron 847 is way faster than the GP's P4 3.8 GHz? Don't let the Celeron name fool you, it is still a dual core sandy bridge chip, just clocked low.

The lowest end AMD E2s might get bested by the P4, but the higher clocked ones would still be a big improvement.

The bigger problem with most cheap laptops is the slow HD and lack of RAM which would cripple any CPU. Give a Celeron 847 an SSD and 4GB+ and it would be fine for most non CPU intensive or gaming tasks. Much better than the P4 for sure.

about 8 months ago

Kickstarter For Open Source GPU

washu_k Re:It's fine to be fabless (108 comments)

I've found a surprising number of modern motherboards that boot fine with no video card (and no onboard video). They often give a "no video" error beep, but keep on booting. Try it without any video card.

about a year ago

Btrfs Is Getting There, But Not Quite Ready For Production

washu_k Re:ZFS (268 comments)

You didn't have enough RAM. To use deduplication on ZFS without a massive performance hit requires assloads of RAM. 8 GB is nothing to ZFS with dedup on unless your disks are tiny. While Oracle claims less, the FreeBSD guys have found you need at least 5 GB per TB of disk just for dedup, plus more for cache and the rest of the OS. Do the math and any reasonably big storage pool will need tonnes of RAM.

about a year ago

Next-Gen Intel Chip Brings Big Gains For Floating-Point Apps

washu_k Re:Hope it's going in the new Mac Pro (176 comments)

The Core i7's are consumer-grade processors and are slower than the Xeon's the Mac Pros use

This is completely incorrect. The current Mac Pros use Nehalem based Xeons which are two generations back from the current Ivy Bridge i7s. Xeons may have differences in core count, cache and/or ECC support but their execution units are the same as their desktop equivalents. The base Mac Pro CPU is equivalent to an i7-960 with ECC support. The current Ivy Bridge i7s are a fair bit faster.

about a year and a half ago

Apple Nabs Java Exploit That Bypassed Disabled Plugin

washu_k Re:Java and flash... (97 comments)

All other operation systems running on similar hardware but having strict security and privileges proof you wrong. Even Linux existed at that time already and ran happily on that hardware.

No, he is completely correct. Linux of the time did not "run happily" on that hardware with the same level of GUI complexity as Win9x. Either Linux had no GUI at all, or a simple window manager like TWM or FVWM.

This is also doubly wrong in claiming that all other operating systems at the time had proper security. The biggest competitors to MS at the time were even simpler and less secure OSes. For GUIs there was MacOS which didn't have protected memory and could barely multitask, along with having no security model. On the server side the biggest at the time would have been Novell, which did have a security model, but still had no protected memory and much simpler multitasking than even Win9x.

about a year and a half ago

Lots of Changes for Intel Graphics Coming in Linux 3.9

washu_k Re:can I buy an intel video card yet? (102 comments)

Nope. P67 boards do not support the onboard video of any CPUs, so effectively it's not there. There are also the P versions of some 1155 CPUs that have no onboard video at all.

about a year and a half ago

Can Legacy Dual-Core CPUs Drive Modern Graphics Cards?

washu_k Re:why 3gb ram and not 4gb or 8gb++? (159 comments)

All Core 2 CPUs have PAE, even the Celeron versions

Some lower end chipsets from the Core 2 era don't support more than 4GB of physical address space, even with 64 bit OSes.

about a year and a half ago

The status of Java on my machine:

washu_k Re:Applets disabled (201 comments)

I'm a satisfied CrashPlan customer too, but it most certainly is bloated. For what it does it's memory usage is insane. The service is currently using 900 MB of RAM on my system just idling, plus another 200 MB for the interface. I've had cases where I've had to edit its config files to allow it to use even more memory and Google shows I'm far from the only one.

It's also extremely slow. It will often backup at only 20-40 mbit/sec locally on my gig lan. I know it encrypts files, but my i7 can perform the same encryption in other programs at least an order of magnitude faster. Yes, I have allowed it to use more CPU power.

While there isn't anything that works as well, there are tonnes of programs that do similar things to CrashPlan with a fraction of the resource usage.

about a year and a half ago

Ask Slashdot: Do You Test Your New Hard Drives?

washu_k Re:Heh (348 comments)

Running spinrite against an SSD is one of the clearest ways of showing that it is complete BS. It will report all sorts of things about the drive that are clearly impossible. It won't error or give no data, it clearly makes things up about the drive.

Another good BS test for spinrite is to run it against a non-ATA drive that is still BIOS accessible. A booted USB flash drive is the best, but something like a modern SCSI/SAS controller works as well. It's clearly impossible for spinrite to access such a device directly, yet it still reports all sorts of things it simply could not see. No errors or blank data, it again makes shit up and displays it.

about 2 years ago

SSD Prices Continue 3-Year Plunge

washu_k Re:Can't wait (347 comments)

Doesn't cache writes, so it's only barely faster than a normal mechanical drive.

about 2 years ago

SSD Prices Continue 3-Year Plunge

washu_k Re:You'll be waiting a long time (347 comments)

Nope, that's complete BS.

I have 32 GB in my system and the difference between an SSD and the best mechanical drive is still night and day.

about 2 years ago

Slashdot Asks: SATA DVD Drives That Don't Suck for CD Ripping?

washu_k Re:Online storage?! (330 comments)

No, it's far more likely that an audio CD will lose data. A modern HD, SSD, tape or even data CD has FAR more error correction and detection than audio CDs. Audio CDs have very limited error correction that is meant to smooth out errors in a non-audible way, not to give perfect data. Any "bitrot" is far more likely to have come from the original CD then the media used to store the ripped data.

about 2 years ago

Is Intel Planning To Kill Enthusiast PCs?

washu_k Re:I just can't live without a ZIF socket. (1009 comments)

No you didn't:

The 386 SX and DX have different bus widths. The SX was 16 bit and was usually soldered on. The DX was 32 bit and usually had a socket, but not a ZIF one. They never shared sockets.

Likewise the Pentium 66 used socket 4 and not socket 5 or 7 that the 150 would have used. Not compatible at all.

about 2 years ago

Ask Slashdot: What To Do With Over 500 Used DIMMs?

washu_k Re:ECC? (291 comments)

Most posters are confusing the issue. ECC and registered are two different things, even if commonly found together. If the DIMMs are ONLY ECC then they will probably work in desktops. If they are registered, ECC or not, then they will not work.

about 2 years ago

AMD Reportedly Preparing Massive Layoff

washu_k Re:Test on Opteron 6234 (286 comments)

You just proved my point. You ran a test with the most ideal case (pure integer code) and it ran slower when on the same module. Run more real world code with two threads and the performance hit gets bigger. Try the same test on an i7. The code will run the same speed no matter which cores it uses, as it doesn't lie to the OS can claim the SMT units are full cores.

This is the whole reason why Windows 7 has problems scheduling on the FX CPUs. AMD LIES to the OS and claims the SMT units are full cores. This causes performance problems when Windows schedules as if it was true. If AMD had been truthful then the FX CPUs would perform to their fullest potential on any OS, and Linux and Win 8 would not have had to be modified to work around the issue.

Call it hyper-threading, SMT or whatever, the second integer unit on FX CPUs are not full cores. AMD did SMT better than Intel, but it's still not a full core.

about 2 years ago


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