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Apr
24
answered Multi-threaded execution of simple perl/python script
Apr
24
answered Safely removed external USB 3.0 disk reconnects on its own in Ubuntu 12.04
Apr
24
comment Does one need both a 32bit and 64bit version of Java?
@AthomSfere, that's pretty much what I said minus the nit picking over the exact proportion of workloads that see benefit and ignoring the higher register count ( it isn't just about the width ).
Apr
23
comment Missing space on hdd linux?
It is the ext[234] filesystem, not linux that does this.
Apr
23
comment Does one need both a 32bit and 64bit version of Java?
@AthomSfere, it is widely accepted that 64bit is generally faster due to having many more registers to use to avoid memory I/O. Of course, in practice, your mileage may vary and you may not notice any difference. There are many benchmarks out there of all sorts of loads showing this general trend, though some specific workloads are slower, and more than a few make little to no difference. The x32 ABI is currently being developed to stick to 32 bit pointers while keeping the other benefits of 64bit so all loads will be at least as fast as 32bit, and most faster.
Apr
23
comment Does PCIe 3.0 x8 provide enough bandwidth for a dual QSFP 40Gbit NIC?
7880 MB/s = 66.1 Gpbs / 40 Gbps = 1.65, not 1.576
Apr
23
comment Does one need both a 32bit and 64bit version of Java?
I suppose there must be a stub plugin somewhere that is just responsible for launching the java interpreter, which runs in its own process, and that the stub itself has to match the arch of the browser, but I would think that sun would be smart enough to include both the 32bit and 64bit stubs with the 64bit JRE. Then again, maybe I'm giving them too much credit.
Apr
23
comment Does one need both a 32bit and 64bit version of Java?
@Karan, AFAIK, java isn't a plugin; it's a program. You run the java program, and it interprets the java code. As such, a 32 bit program can run a 64 bit program.
Apr
23
comment New build not powering up at all after connecting psu cables to hard drive
After all that you didn't bother unplugging the drive again?
Apr
23
comment Identifying a small IDE connector
Yep, they bundled the power for laptops and we used to keep small adapter boards around so you could plug the drive into a regular PC IDE connector and power supply. Of course, PATA is kind of dead these days.
Apr
23
comment Does one need both a 32bit and 64bit version of Java?
@AthomSfere, and the article you linked even says "until recently, moving from a 32bit java to a 64bit java mean taking a performance hit." So even then it had already been fixed.
Apr
23
comment Does one need both a 32bit and 64bit version of Java?
@AthomSfere, minecraft for one, recommends using a 64 bit java runtime if you want to enable the highest graphics modes as the performance is too slow under 32 bit. That article appears to be from 2008, so is rather out of date being from the earliest days of 64 bit.
Apr
23
comment Does one need both a 32bit and 64bit version of Java?
64 bit gives much better performance in most apps and it shouldn't matter if the launching program is 32 bit, it can still run the 64 bit java.
Apr
18
comment One hard drive local to one computer but connected to server
@rmp251, yea.. over the network. To directly access it via usb, the network server has to be disabled as only one system can directly access the disk at a time.
Apr
17
comment One hard drive local to one computer but connected to server
@DaveC, you can't access the drive at the same time over the network and via usb. It's one or the other.
Apr
10
answered Linux/Bash, how to schedule commands in a FIFO queue?
Mar
19
comment Is it safe to put a hibernated hard disk to an external casing?
@deathlock, as I said in my answer, if you aren't going to ever resume the hibernated system, then it is safe. Just make sure you don't resume the hibernated system after ( if Windows tries to, be quick and hit the key to stop it and force it to delete the hibernation data ).
Mar
19
comment Is it safe to put a hibernated hard disk to an external casing?
@TFM, as kinokijuf explained, it was an example of a third-party driver. Dirty pages are flushed to disk on hibernate, but clean pages are restored when you resume, and assumed to still be correct. That assumption is wrong if you modified the disk out from under the hibernated system, which to its mind, had the disk mounted the whole time.
Mar
18
answered Is it safe to put a hibernated hard disk to an external casing?
Mar
18
comment What is the advantage of using 'tar' today?
Because the data stream is broken into a series of CFDATA blocks that are limited in size, that does in fact, provide for random access, since you can seek to any CFDATA block and start decompression there. The folder mechanism is a seemingly useless abstraction. As I said, the deflate dictionary is not strictly limited to 32k, though in practice it tends to not grow much larger due to the 32k distance limit, but inf-zip allows for bzip2, which has no such limit. Whatever the limits of the compression algorithm, restarting it does reduce compression ratios.