Thanks to one and all -- very helpful in getting the system set up. -- Fr David Ousley davidousley@verizon.net
If you only use swap now and then, but get frustrated that your whole machine slows down, then maybe. The trouble is you could start using swap more and more frequently and not realize it. Thus you wear out that expensive SSD for little real value.
Absolutely true,
In the bad-old-days, swap was a mere fact-of-life. But with the price of mem dropping continously things have changed. In general, swap should be treated as the safety lane on the high way: "It is there, but should never use it unless emergencies arises" Otherwise, there is something wrong in the system....
So if you _add_ a SSD only for speeding up things, very well, put all the things there that hardly changes: /boot, /usr, /lib, perhaps mount them read-only. And keep stuff that changes continuously (/var, /srv, /tmp) on traditional disks.
Other story is however if you _only_ have sdd, for instance for noise, power consumption. Some partitions (/tmp, /var/run) can entirely be placed in mem, using tmpfs, thus increasing the claim on mem. Leaves us with swap in that condition: If you don't define swap (possible) and a process gets greedy, the much feered Out-Of-Mem steps in and might kill processes you rather would like the live. On the other hand, as clearly stated above, swap on SDD will have a bad impact on the life expectency of your SDD.
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