[GTALUG] New Desktop PC -- debian Linux - Proposed 2 TB HDD Partitioning;

[Russell]

On April 18, 2018 8:23:12 AM CDT, Jamon Camisso via talk <talk at gtalug.org> wrote:
>On 2018-04-18 07:35 AM, Russell via talk wrote:
>> 
>> 
>> On April 17, 2018 9:02:14 AM CDT, lsorense at csclub.uwaterloo.ca wrote:
>>> On Tue, Apr 17, 2018 at 08:20:47AM -0400, Russell via talk wrote:
>>>> Currently I have two versions of the same os on the same machine.
>One
>>> on M.2 Xpoint nvram and one on a standard SSD. I'm playing around
>with
>>> tweaking before I do a final config. So far the Xpoint direct hw
>access
>>> appears 3x as fast as the SSD while real world throughput shows up
>>> about twice as fast on the Xpoint, recent INTEL cache fencing
>>> notwithstanding.
>>>>
>>>> dd if=/dev/zero bs=1M count=1024 | md5sum
>>>> 1024+0 records in
>>>> 1024+0 records out
>>>> 1073741824 bytes (1.1 GB, 1.0 GiB) copied, 1.35008 s, 795 MB/s
>>>> cd573cfaace07e7949bc0c46028904ff  -
>>>>
>>>> 795 is just under twice as fast as writing to the conventional SSD.
>>>
>>> That command didn't write anything to anywhere.
>> 
>> It wrote a bunch of zeros to a virtual file. Perhaps even touching a
>tmp file along the way. Even if it didnt touch tmp, it wrote the zeros
>someplace in order to perform the count.
>> 
>> I was just trying to comment on the speeds of the two installs
>relative to the respective  disks the OS runs from. I'm sorry you
>didn't understand that. Perhaps I should have said running the OS from
>the two different drives, irrespective of all the other disk writes
>which may happen when the OS operates normally when calling dd from a
>GUI.
>
>Try bonnie++ a few times on each install. It is explicitly designed to
>test drive performance.
>
>Cheers, Jamon

Thanks, I downloaded it and man bonnie++ is my transit read today.
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-- 
Russell