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For Fedora/RHEL/CentOS - the default method to configure sysfs and have it persist across reboots is to use tuned. tuned is a general system tuning infrastucture. For sysfs parameters, create a [sysfs] stanza in your configuration file, and provide a line per variable that you want to set and have persist across reboots. Also as Lennart Poettering pointed ...


I noticed in the list of tweaks that timestamps is turned off, please do not do that. That is an old throwback to days of yore when bandwidth was really expensive and people wanted to save a few bytes/packet. It is used, for example, by the TCP stack these days to tell if a packet arriving for a socket in "CLOSE_WAIT" is an old packet for the connection or ...

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