This gets fuzzy fast, because there are multiple issues regarding which voltages will really work and what voltages a particular RAM stick really will function at -- these specs are becoming annoyingly mushy. In any case, the decision was made to test them and they came right up (at what voltage -- who knows?) I also switched out the old USB 2.0 drive for a new 5TB USB 3.0 drive (under $120 -- it isn't silent on my table here, but I can live with it).
I like to keep SSDs as empty as possible to preserve their lifetimes -- and I've moved much of the routine files and directories (including browser caches, etc.) from the SSD to the external drive via symbolic links (or in the case of /tmp, via a union mount).
The results are really quite spectacular. The system just zooms along, even with two Windows clients running for testing in VirtualBox simultaneously.
I'm not into benchmarks for situations like this, but the subjective feel of the system is excellent. The external disk is very fast at USB 3.0 speeds and there is no perceptible performance hit for using it. Part of the likely reason why is shown in the image below. The system is relatively quiescent at this point, with a bunch of Chrome windows and tabs open, plus a variety of other miscellany. The thin red line at the bottom is user memory. The thin yellowish line above that is buffers. The big orange chunk is all disk cache. Gray above that is free space. As you can see, Trusty is taking advantage of all that extra RAM for a very large in-core (core? -- Did I just say core?) cache for both the SSD and especially the external drive. Needless to say, it's very, very fast.
Executive conclusion: To say the least, so far, so good.
Any questions, please let me know.
- Buzz (current)
Lauren is widely quoted regarding such matters by newspaper, magazine, and other articles. He participates in numerous radio and television news programs, talk shows, and other venues where these important issues are under discussion.
Lauren is a member of the ACM (Association for Computing Machinery) Committee on Computers and Public Policy.
Lauren is based in Los Angeles.
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