In the Version A, we use UNIX socket to send the original file content to another application, then receive the process result generate the required file. I would guess that version A is allocating memory for the file contents, and the memory manager isn't returning the memory to the system when it is freed (as it correctly knows the memory will be reused). Possibly you are getting memory fragmentation which is stopping blocks of memory being returned to the OS.
First i also think it is the memory fragmentation reason, i also use tcmalloc, and jemalloc, the result is same, i didn't known tcmalloc or jemalloc well, seems them will divided memory into small block, large block.
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Recent research suggests that everything from absentmindedness to arithmetic skills can be improved by playing certain intelligence and memory-stimulating activities.
According to the Society for Neuroscience, remembering lists of facts or keeping day-to-day information in your mind is different from memorising things in the long term. Psychologist Professor Walter Furneaux agrees that this kind of mental stimulation is valuable. It’s said that doing puzzles can slow the onset and progression of Alzheimer’s disease and improve mental capacity in the young. So you may be able to boost your IQ by a point, but the great novel may take a little more time. Low-tech brain workouts aka brain gym: Solve puzzles, Riddles, crosswords, sudoku and Scrabble are all reported to greatly improve brain function and memory, and decrease mental decline.

Also having enough available space is absolutely necessary for your virtual memory and RAM to function properly. You can increase Virtual Memory performance automatically by freeing up resources in your registry. Under Drive [Volume Label], click the drive that contains the paging file that you want to change. HOT TIP: To stop your CPU from constantly changing the paging file, set the initial and maximum size to the same value.
Scientists and neuro-experts believe puzzles that rely on problem-solving, memory and logical deduction can be highly beneficial for the brain by making people approach tasks in a more flexible way.
If you teach people to play the piano, the part of the brain that controls finger movements increases and is more active. He claims that the exercises increased IQ, reduces anxiety, and improves cognitive efficiency and speed”. According to a study into the effects of Alzheimer’s by the Case Western Reserve University in the United States, middle-aged people who kept active, mentally or physically, were less likely to develop the disease in later life. Physical activities are proven to improve memory, abstract thinking and concentration, promoting the growth of brain cells. Language learning provides a great mental workout, forcing your brain to switch tracks constantly.
Scientists recommend sunflower seeds, dark berries, unrefined grain foods (brown rice, pasta and wholemeal bread), oily fish, ginkgo biloba and minimal amounts of caffeine. Your virtual memory is important but before you alter your settings it’s best to find out more about virtual memory.

When you have used up all your RAM, your computer will shift data to an empty space on the hard drive.
You can enter the amount of memory you would like to reserve for Virtual memory by entering the initial and maximum size.
I have tried another case, don't send the file through the Unix socket, use system function, call the another application generate the required file, it shows that the memory will not increase. I have tried another case, don't send the file through the Unix socket, use system function, call the another application generate the required file, it shows that the memory will not increase.
Activities such as gardening, playing a musical instrument or exercising were found to be the most successful in helping to prevent the disease. Being awake for 21 hours straight decreases your mental agility to that of someone who has been drinking.
For best results, eat within an hour of waking up and choose food high in fibre, protein and carbohydrate. You can set the initial size and maximum size after clicking the Custom size check box.Remember its better to keep the Virtual memory values the same. Now it’s known that people can acquire new brain cells throughout their lives, provided their brains are stimulated. When you increase your virtual memory you are increasing the empty space that is reserved for your RAM overflow.

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