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GDB corrupted stack frame - How to debug?
...rame (corrupt stack?)"; I've done something exactly like this in code in a CPU exception handler before, but couldn't remember other than info symbol how to do this in gdb.
– leander
Mar 8 '13 at 19:05
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How do I verify/check/test/validate my SSH passphrase?
...le slow. Most of the programs could start up in a minute or more while the CPU usage was 100%. After restarting my laptop I could log in hardly as it took minutes to see my desktop. Finally I've found this issue on Ask Ubuntu. I had to start by gnome-keyring-daemon to resolve the issue.
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Does Parallel.ForEach limit the number of active threads?
...P for any work that cannot be trivially reasoned about as being explicitly CPU bound.)
– user2864740
Apr 11 '17 at 23:31
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Find the nth occurrence of substring in a string
...actually have to copy the whole file into memory:
In [4]: %time s = mm[:]
CPU times: user 813 ms, sys: 3.25 s, total: 4.06 s
Wall time: 17.7 s
Ouch! Fortunately s still fits in the 4 GB of memory of my Macbook Air, so let's benchmark findnth():
In [5]: %timeit find_nth.findnth(s, '\n', 1000000)
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bash HISTSIZE vs. HISTFILESIZE?
... Look, my hard drive is 1 TB and largely empty, and I have gobs of idle CPU cycles and RAM, and I want to save as much bash history as reasonably possible -- so when I need to look up that stupid command I haven't run in two years, I know it's in my bash history. To make it more concrete, let's s...
Why should hash functions use a prime number modulus?
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@SteveJessop The number 31 is easily optimized by the CPU as a (x*32)-1 operation, in which *32 is a simple bit shift, or even better an immediate address scale factor (e.g. lea eax,eax*8; leax, eax,eax*4 on x86/x64). So *31 is a good candidate for prime number multiplication. T...
Boost Statechart vs. Meta State Machine
...dware will be able to process a few hundred events per second.
Regarding CPU load, if the number of events to process is much lower than these numbers, Boost.Statechart overhead compared to MSM will almost certainly not be noticeable. If the number is much higher, you're definitely better off with...
Use numpy array in shared memory for multiprocessing
...mopapisdn: Pool() defines the number of processes (the number of available CPU cores is used by default). M is the number of times f() function is called.
– jfs
Jul 16 '18 at 13:08
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多媒体组件 · App Inventor 2 中文网
...全就是杂乱的，不知是不是因为版本过旧，还是其他设置问题，经过一系列尝试（包括设置文本朗读器的国家及语言属性）仍然是不行的。最终只得选择“Google文字转语言引擎”（语音设置为”中文“），中文朗读的效果也非常...
Elastic search, multiple indexes vs one index and types for different data sets?
...at such large numbers of shards make the job of the coordinating node very CPU and memory intensive. It is usually a better idea to organize data in such a way that there are fewer larger shards. In case you would like to bypass this limit, which is discouraged, you can update the action.search.shar...