Whoops. PD=Persistent disk.  Not physical.  We don’t yet have vapor disks.  :)

On Fri, Aug 5, 2022 at 14:16 Jeff Mohler via Toasters <toasters@teaparty.net> wrote:



---------- Forwarded message ----------
From: Jeff Mohler <jmohler@yahooinc.com>
To: Scott Miller <scott.miller@dreamworks.com>
Cc: John Stoffel <john@stoffel.org>, Toasters <toasters@teaparty.net>
Bcc: 
Date: Fri, 5 Aug 2022 14:10:15 -0700
Subject: Re: [E] Re: [EXTERNAL] experience with standard PD layer using CVO?
Cloud volumes ontap
Physical disk 

:)

Looking to see if any MB/sec on writes to sata physical disk backends have been touched.  

Hearing that there may be (in some clouds) a write throughout barrier that CVO may run into. 

On Fri, Aug 5, 2022 at 13:46 Scott Miller <scott.miller@dreamworks.com> wrote:

CVO == Cloud Volumes Ontap, the software version of OnTap that you can run in the
  various CSP's (Cloud Service Providers) aka GCP, AWS, Azure


PD == Persistent Disk, what GCP (Google Compute Platform) calls its, uh, persistent disks.


And to answer Jeffs question, we've not done any CVO testing in GCP, so I can't
answer the throughput questions.

We have found that, in general, the VM Instance type that hosts the CVO instances matters,
since the Instance type also determines networking connectivity.

Disk type (in this case GCP PDs) matters, too; I'd test with Local SSD to see where
that gets you.

Lastly, Throughput is dependent on workload, which determines the IO pattern.
Maybe create an FIO config that generates traffic close to what you expect, and
use that to drive various CVO configurations.


 -Skottie




On Fri, Aug 5, 2022 at 1:26 PM John Stoffel <john@stoffel.org> wrote:
>>>>> "Jeff" == Jeff Mohler via Toasters <toasters@teaparty.net> writes:

Jeff> From: Jeff Mohler <jmohler@yahooinc.com>
Jeff> To: Toasters <toasters@teaparty.net>
Jeff> Date: Fri, 5 Aug 2022 10:15:13 -0700
Jeff> Subject: CVO on Standard/SATA PD

Jeff> Does anyone here have experience on a standard PD layer using CVO?

Jeff, I know you're deep in the weeds, but for those of us who
aren't... can you spell out those acronyms please?

PD = Purple Dinosaur?
CVO = Cheery Victory Orange?

*grin*


Jeff> If so, I am looking for -throughput- maximus, limitations,
Jeff> lessons learned, on per volume write workloads.

Jeff> We are in a mode where we believe we were told there are
Jeff> 100-200MB/sec write "edges" of throughput to CVO on standard PD
Jeff> storage...just we're not quite in shape here to test that yet
Jeff> ourselves.

Yeah, you need to translate this section as well please.  Or at least
give a little more context so people have a hope of understanding.  Or
better yet, learning from your experiences!

Cheers,
John

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---------- Forwarded message ----------
From: Jeff Mohler via Toasters <toasters@teaparty.net>
To: Scott Miller <scott.miller@dreamworks.com>
Cc: Toasters <toasters@teaparty.net>
Bcc: 
Date: Fri, 5 Aug 2022 22:10:33 +0100
Subject: 
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