引用:
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作者moninca09
私下使用指的是什麼呢？這只是很單純的讀取測試啊......
難不成每次讀取需要預先解壓縮到其他空白區域？
這樣寫入放大率會變得多恐怖？每次讀取都需要寫入資料嗎？
Flash的壽命會減損很大吧
而且60GB算小容量？120GB算小容量？這個所謂大小如何評估呢？
多大對SF算夠大？剩多少空間給他用他才滿意？這似乎沒有標準
這個測試只用了這台SSD不到一半的容量而已啊
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THG文章本身就這麼寫,我也相信是這樣,信不信就看人囉
In theory, read speeds shouldn't be significantly impacted by the drive's free space. But there is a noticeable drop-off on the lower-capacity SF-22xx-based SSDs. Compression is one reason for this. Compressed data has to be decompressed, which requires sufficient free space. SandForce's garbage collection mechanism is a second explanation. Because most of its clean-up happens in the foreground, decompression requires a rotation of scratch space so that the NAND wears out evenly. This is known as wear leveling.
Both factors penalize the 60 GB drives we're rounding up more than the larger models as a result of limited NAND bandwidth, a side-effect of leaning on fewer NAND dies. We're using HD Tune to illustrate.