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I created a tmpfs which was mounted at /ramdisk using the mount command.And I tried to benchmark this tmpfs using something like this:

hdparm -tT /ramdisk

And I was told that /ramdisk is a directory.But apparently there isn't a corresponding device file under the /dev directory for the tmpfs I created. So is there a way I can benchmark this tmpfs?


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What are you trying to do? –  ewwhite Apr 21 '13 at 13:20
I'm trying to use this tmpfs for apache2 disk cache.And I want to make sure that tmpfs is better than vps hard drive. –  Steven Jang Apr 21 '13 at 13:23

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