ramdisk benchmark

[Shailesh Humbad]

FYI, just for fun, here is a Sisoftware Sandra file system benchmark
of a local Linux RAM disk. Sandra is running under the windows
emulator WINE on the the boot-from-CD Linux operating system called
Knoppix 3.3.

DRIVE INDEX: 554,424 kB/s (4x RAID-0 is about 90,000kB/s)

Test File Size : 717MB

Benchmark Breakdown
Buffered Read : 1069 MB/s
Sequential Read : 558 MB/s
Random Read : 505 MB/s
Buffered Write : 1068 MB/s
Sequential Write : 579 MB/s
Random Write : 529 MB/s

Drive
Drive Type : Hard Disk
Total Size : 799MB
Free Space : 796MB, 100%

System : Athlon XP 2500+, 1 GB DDR dual channel

 

[Eric Gisin]

I bet running it on Win 2K/XP with the Microsoft RAM disk would be even
faster. Search for it on the Microsoft support page.

 

[Arno Wagner]

I bet running it on Win 2K/XP with the Microsoft RAM disk would be even
faster. Search for it on the Microsoft support page.

Unlikely. These are realistic raw RAM-Speeds for the measurement
platform. So unless MS fakes the reads/writes, there is no way
they could be much faster.

Arno

 

[Eric Gisin]

Unlikely. These are realistic raw RAM-Speeds for the measurement
platform. So unless MS fakes the reads/writes, there is no way
they could be much faster.

Sure Arnie. You're the resident Windows expert now?

If you run a Win app under Wine, there is going to be extra overhead.

 

[Shailesh Humbad]

Here's another bench, this time running under XP Pro SP1a.
The ram drive software is RamDisk Plus 7.0 by SuperSpeed.com,
optimized for AMD and costing $100. Sandra benchmark runs faster from
Linux even though it is running under emulation!! Granted this is not
a scientific test, but it is a real-world data point that anyone can
try easily. BTW, I tried almost all the freeware RamDisk programs on
the Internet (including that Microsoft one), and they all either
crashed, didn't install, or had severe limitations.

DRIVE INDEX: 460,297 kB/s

Benchmark Breakdown
Buffered Read : 622 MB/s
Sequential Read : 450 MB/s
Random Read : 449 MB/s
Buffered Write : 590 MB/s
Sequential Write : 449 MB/s
Random Write : 450 MB/s

Drive
Drive Type : Hard Disk
Total Size : 599MB
Free Space : 599MB, 100%