получается что-вы в аварийной ситуации ребутили только server7 ?
(у него uptime 12 дней )
а server6 в UP 221 день(его давно не ребутили)
так ?
There are two principle reasons that the existence of swap space is desirable. First, it expands the amount of memory a process may use. Virtual memory and swap space allows a large process to run even if the process is only partially resident. As “old” pages may be swapped out, the amount of memory addressed may easily exceed RAM as demand paging will ensure the pages are reloaded if necessary.
The casual reader1 may think that with a sufficient amount of memory, swap is unnecessary but this brings us to the second reason. A significant number of the pages referenced by a process early in its life may only be used for initialisation and then never used again. It is better to swap out those pages and create more disk buffers than leave them resident and unused.
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