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Subject: Re: Anyone interested in a server build contract?
From: John Gelnaw <[log in to unmask]>
Reply-To:Platform Independent Linux List! <[log in to unmask]>
Date:Thu, 24 May 2018 10:39:58 -0400
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On Thursday, May 24, 2018 7:50:17 AM EDT Allen Rout wrote:
> I've got a friend who's interested in having a physical server built at
> a breakneck pace, with particular requirements: absolutely ridiculous
> IOPS because storage bandwidth is bottlenecking his builds.
> 
> He wants "someone who has done this dozen of times before, can
> absolutely nail the task, and is in it for the gig -- not someone who is
> in it to learn something – this task needs to be mother’s milk for the
> person with the right experience level".
> 
> He talks like that in person, too. :)
> 
> Let me know if you're interested, and have built some high performance
> boxes a few times.

Without knowing the size of the project, what kind of storage bandwidth 
they've got currently, what makes them think they're IO limited, what their 
target bandwidth is-- it's kind of hard to even know what sort of system is 
actually being targeted.

My experience is that threads and memory outweighs IO when compiling 
software-- so a threadripper box with a pair of NVMe drives in a RAID 0 
configuration would be where I'd start.

For comparison, that box should be able to do a default linux kernel compile 
in around 36 seconds (according to Phoronix).  An Epyc CPU apparently can 
reduce that to about 20 seconds.

Phoronix also compared compiling on a ramdisk vs a NVMe SSD and couldn't find 
a "meaningful difference", further supporting my contention that disk IO isn't 
the limiting factor.

Now, if the goal is to see how many IOPS you can get on a single user system, 
that's just a question of how much money are you willing to spend?  :)

-- 
John Gelnaw <[log in to unmask]>
University of Florida Health IT

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