In Windows what is a "runtime image"? [closed] - windows

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I am reading the book "MySQL 5.0 Certification Study Guide".
On page 362 it states:
• mysql-debug contains support for debugging. Normally, you don't choose this server for production use because it has a larger runtime image and uses more memory.
What is an "image"? I have searched extensively to try to find the answer.

The image is the size of the executable code in memory.
In general, "X uses more memory than Y" could refer to both the runtime image size and the amount of space allocated for non-executable data. This quotation is clarifying that both are worse in the debug version.

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Activity Monitor, what does %CPU represent exactly? [closed]

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Here is what I see in MacOS Activity Monitor, note %CPU column.
First item (Xcode process) shows 122.4 value. Any idea what it represents? If it is 122.4% then percent of what exactly?
The %Cpu usually represents the % usage of a single core on your processor. If you have a quad-core, you have a total usage possibility of 400%.
Your first process in your list has 28 threads spread accross more than one core which are using more execution than a full single core.

top output, relationship between virt and mem% for a process [closed]

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my computer has ubuntu 14 installed. There are a total of 40 CPUs, and 260G memory.
I use top command line to check the status of the processes. I was expecting that for each individual process, the virt value should be approximately equal to 260 * mem%. However, it is not.
Could you anyone help me to figure out why?
Thanks for any input:))
The MEM% column shows the amount of physical memory that is being used by a process. This amount is called the "Resident Set Size" (RSS) and is given in the RES column. The amount of virtual memory on a system is effectively unlimited due to the fact that each process has their own LDT (on x86; other architectures' MMUs have their own equivalents).

File not being sent to Pen drive [closed]

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I have a 32Gb Pen Drive with me.
When i Try to send a file greater than 4GB it displays a message that the file is too large for the destination. Why does it displays this message?
How can i solve this problem?
Reformat it as NTFS instead of FAT.
And check out the other sites of "stackexchange", where such non-programming (!) questions are appropriate.

What is the reason of memory gap in hard drives? [closed]

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I want to know that what is the exact reason behind memory difference in our hard drives or pen drives .
As when we say , We have a pen drive of 4GB but actual usable space is 3.7GB . What happens to the rest of memory? Are the manufacturing companies stealing these memory spaces from us or there is any technical reason behind this?
Thanks,
Nitesh Kumar
They use decimal prefixes, you're using binary prefixes. This gives a discrepancy of approximately 2.4% per prefix magnitude.

How to check what process is writing to hard drive in shell [closed]

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Currently the free space of my hard disk is shrinking for unknown reason. The free space keeps reducing until no space lefts. I don't know what's the cause, so I want to inspect to see what process is the culprit and terminate it.
Command like find / -size +5M will help you find files bigger than particular size (5M in the example). Probably these would be log files, so you might want to set up logrotate properly. Other possibility is core files, which means some autostarted program is screwed. Also have a look at lsof.

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