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Alexey Avramov 2018-07-25 03:50:38 +09:00
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README.md
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# Nohang # Nohang
Nohang is a highly configurable daemon for Linux which is able to correctly prevent [out of memory](https://en.wikipedia.org/wiki/Out_of_memory) (OOM) conditions and save [disk cache](https://en.wikipedia.org/wiki/Page_cache). Nohang is a highly configurable daemon for Linux which is able to correctly prevent [out of memory](https://en.wikipedia.org/wiki/Out_of_memory) (OOM) conditions and keep system responsiveness in low memory conditions.
## What is the problem? ## What is the problem?
OOM killer doesn't prevent OOM conditions. And OOM conditions may cause [freezes](https://en.wikipedia.org/wiki/Hang_(computing)), [livelocks](https://en.wikipedia.org/wiki/Deadlock#Livelock), drop caches and killing (via [SIGKILL](https://en.wikipedia.org/wiki/Signal_(IPC)#SIGKILL)) multiple processes instead of terminating (via [SIGTERM](https://en.wikipedia.org/wiki/Signal_(IPC)#SIGTERM)) one process. OOM conditions may cause [freezes](https://en.wikipedia.org/wiki/Hang_(computing)), [livelocks](https://en.wikipedia.org/wiki/Deadlock#Livelock), drop [caches](https://en.wikipedia.org/wiki/Page_cache) and processes to be killed (via [SIGKILL](https://en.wikipedia.org/wiki/Signal_(IPC)#SIGKILL)) instead of trying to terminate them correctly (via [SIGTERM](https://en.wikipedia.org/wiki/Signal_(IPC)#SIGTERM) or other action). Some applications may crash if it's impossible to allocate memory.
Here are the statements of some users: Here are the statements of some users:

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nohang.conf
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Display the configuration when the program starts. Display the configuration when the program starts.
Valid values are True and False. Valid values are True and False.
print_config = False print_config = True
Print memory check results or not print. Print memory check results or not print.
Valid values are True and False. Valid values are True and False.