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我遇到了一個奇怪的scala-iomoveTo方法問題。這裏是我的文件系統，tmp目錄駐留在RAM中。scala-io，從tmpfs移動文件太慢
~ % df -Th ~/ :) Filesystem Type Size Used Avail Use% Mounted on rootfs rootfs 112G 18G 89G 17%/ /dev devtmpfs 3.9G 0 3.9G 0% /dev run tmpfs 3.9G 236K 3.9G 1% /run /dev/sda btrfs 112G 18G 89G 17%/ shm tmpfs 3.9G 872K 3.9G 1% /dev/shm tmpfs tmpfs 3.9G 34M 3.9G 1% /tmp
當從tmp移動文件到主目錄或向後，第一是WERY慢（主觀約1M/s，而iotop顯示荒謬1500M/s）的，第二它會導致100％的CPU負荷。在同一個文件系統中移動文件時，一切都按預期工作。
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scala> import scalax.file.Path
import scalax.file.Path
scala> val tmp = Path("/tmp/ensime")
tmp: scalax.file.Path = Path(/tmp/ensime)
scala> tmp.exists
res0: Boolean = true
scala> val home = Path("/home/_4e6/dest")
home: scalax.file.Path = Path(/home/_4e6/dest)
scala> home.exists
res1: Boolean = false
scala> tmp.moveTo(home) // very slow
res2: scalax.file.Path = Path(/home/_4e6/dest)
scala> home.moveTo(tmp) // a bit faster but still unsatisfactory
res3: scalax.file.Path = Path(/tmp/ensime)
此外，copyTo方法工作正常; replace和atomicMove標誌不會改變任何東西;和ramfs不適合我。
scala> val fs = scalax.file.ramfs.RamFileSystem()
fs: scalax.file.ramfs.RamFileSystem = Ram File System
scala> val ramTmp = fs("/tmp/ensime")
ramTmp: scalax.file.Path = RamPath(/tmp/ensime)
scala> ramTmp.exists
res9: Boolean = false