Speeding up text file parser (BLAST tabular format)

[Edwin van Leeuwen via Digitalmars-d-learn]

On Monday, 14 September 2015 at 12:30:21 UTC, Fredrik Boulund 
wrote:
> Hi,
>
> Using a small test file (~550 MB) on my machine (2x Xeon(R) CPU 
> E5-2670 with RAID6 SAS disks and 192GB of RAM), the D version 
> runs in about 20 seconds and the Python version less than 16 
> seconds. I've repeated runs at least thrice when testing. This 
> holds true even if the D version is compiled with -O.
>

Sounds like this program is actually IO bound. In that case I 
would not expect a really expect an improvement by using D. What 
is the CPU usage like when you run this program?

Also which dmd version are you using. I think there were some 
performance improvements for file reading in the latest version 
(2.068)