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What's the purpose of the LEA instruction?
...nVoigt I used to say that, because I'm an old bloke :-) Traditionally, x86 CPUs did use the addressing units for this, agreed. But the "separation" has become very blurry these days. Some CPUs no longer have dedicated AGUs at all, others have chosen not to execute LEA on the AGUs but on the ordinary...
Redis is single-threaded, then how does it do concurrent I/O?
...cient storage engine like Redis is very often the network, well before the CPU. Isolated event loops (which require no synchronization) are therefore seen as a good design to build efficient, scalable, servers.
The fact that Redis operations are atomic is simply a consequence of the single-threaded...
Exclude a sub-directory using find
...example but find is still iterating into the directory structure and using cpu cycles to iterate over all those directories/files. to prevent find from iterating over those directories/files (maybe there are millions of files there) then you need to use -prune (the -prune option is difficult to use ...
How does BitLocker affect performance? [closed]
...r and core synchronization with no overhead, and that nothing requires the CPU in the same time (that one hell of an assumption, actually). The X25-M G2 is announced at 250 MB/s read bandwidth (that's what the specs say), so, in "ideal" conditions, BitLocker necessarily involves a bit of a slowdown....
iPhone Data Usage Tracking/Monitoring
... mach_absolute_time is not uptime. It is roughly the amount of time the CPU has been active. mach_absolute_time mostly stops counting when the device sleeps.
– Bob Whiteman
Oct 26 '15 at 20:26
...
Sharing a result queue among several processes
...iprocessing import Pool
def busy_foo(i):
"""Dummy function simulating cpu-bound work."""
for _ in range(int(10e6)): # do stuff
pass
return i
if __name__ == '__main__':
with Pool(4) as pool:
print(pool._outqueue) # DEMO
results = [pool.apply_async(busy_foo...
What is the difference between mutex and critical section?
...
@TroyHoward try forcing your CPU to run at 100% all the time and see if INFINITE works better. The power strategy can take as long as 40ms on my machine (Dell XPS-8700) to crawl back up to full speed after it decides to slow down, which it may not do if ...
How to merge 2 List and removing duplicate values from it in C#
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Can vary by processor speed, depends what kind of CPU you have.
– Asad Ali
Aug 4 '16 at 22:17
8
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Hibernate lazy-load application design
...referenced object, let alone a collection of entities. Memory consumption, CPU usage and latency to mention the least are also far worse, so I guess I can live with it.
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How to extract img src, title and alt from html using php? [duplicate]
...ar image"
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)
[..]
)
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Regexps are CPU intensive so you may want to cache this page. If you have no cache system, you can tweak your own by using ob_start and loading / saving from a text file.
How does this stuff work ?
First, we use preg_ match_ all, a fun...