Samsung 850 EVO SSD Linux Benchmarks

[chrisb]

compression. it's probably zero-data.

Yup...

533 	/*
534 	* This routine opens, writes the amount of (zero filled) data to a file.
535 	* It chunks IO requests into the specified buffer size. The data is just zeroed,
536 	* nothing in the kernel inspects the contents of the buffer on its way to disk.
537 	*/

It would be trivial to replace the

memset(io_buffer, 0, io_buffer_size);

with some non-compressible data

[Licaon]

in raid the 840 evos kind of deal as long as you secure erase every now and then.

Except they don't support 840EVOs in RAID only Pros, whatever that means, so I ignored them. I got a pair of Kingston HyperX 3K 120Gb instead (yeah yeah I know about their V300 issue) and they work great in RAID 0. I also got some 3Ks for different systems, non-RAID, either those or Intel 530s, whatever was cheeaper at the time, all working great so far.