[deanhills]

@Mashiro  Thank you so much for the awesome tutorial about how to set up Debian and Nginx for publishing a WP site.

So tonight I went through the upgrade process again.  And had success for a second time from a clean install of Debian 8.  In anticipation of trying out your tutorial, I wanted to have a VPS with up to date Debian 10 on it, and I think this is the closest I'll be able to get to that for now.

In the meanwhile, while I had to reinstall the OS anyway, I took speed tests and benchmark tests of VPS 9 Dallas with the two different OS Installations CentOS 7 and Debian 8, as well as Debian 10 upgraded version after reboot.  I know there can still be variances, but what has me curious is that the speed tests with the different OS installations are taken from varying locations and not the same one every time.  Here are the results of my tests:


(1) Centos 7: Speed Test



(2) Debian 8: Speed Test



(3) Debian 10: Speed Test



---------------------------------------------------------------------------

(1) CentOS 7: Benchmark Test
Benchmark started on Wed May 19 15:28:49 EDT 2021
Full benchmark log: /root/bench.log

System Info
-----------
Processor       : Intel® Xeon® CPU E5-2670 v2 @ 2.50GHz
CPU Cores       : 2 @ 2499.998 MHz
Memory          : 7821 MiB
Swap            : 31 MiB
Uptime          : 5 min,

OS              : CentOS Linux 7 (Core)
Arch            : x86_64 (64 Bit)
Kernel          : 3.10.0-1160.25.1.el7.x86_64
Hostname        : kvm-Post4VPS-Dallas


Speedtest (IPv4 only)
---------------------
Your public IPv4 is 23.**.**.**

Location                Provider        Speed
--------                --------        -----
CDN                     Cachefly        205MB/s

Atlanta, GA, US         @sohamb03       79.5MB/s
Dallas, TX, US          Softlayer       101MB/s
San Jose, CA, US        Softlayer       29.9MB/s
Washington, DC, US      Leaseweb        58.0MB/s

Sao Paulo, Brazil       Softlayer       2.33MB/s

Singapore               Softlayer       7.28MB/s
Taiwan                  Hinet           13.9MB/s
Tokyo, Japan            Linode          13.9MB/s

Nuremberg, Germany      Hetzner         13.9MB/s
Rotterdam, Netherlands  id3.net         61.2MB/s
Haarlem, Netherlands    Leaseweb        160MB/s
Milan, Italy            Softlayer       6.24MB/s

Sydney, AU              Future Hosting  350KB/s


Buffered Sequential Write Speed
-------------------------------
I/O (1st run)   : 343 MB/s
I/O (2nd run)   : 575 MB/s
I/O (3rd run)   : 731 MB/s
Average I/O     : 549.667 MB/s

---------------------------------------------------------


(2) Debian 8: Benchmark Test
Benchmark started on Wed May 19 15:50:28 EDT 2021
Full benchmark log: /root/bench.log

System Info
-----------
Processor       : Intel® Xeon® CPU E5-2670 v2 @ 2.50GHz
CPU Cores       : 2 @ 2499.998 MHz
Memory          : 8003 MiB
Swap            : buffers/cache: MiB
Uptime          : 11 min,

OS              : Debian GNU/Linux 8 (jessie)
Arch            : x86_64 (64 Bit)
Kernel          : 3.16.0-4-amd64
Hostname        : kvm-Post4VPS-Dallas


Speedtest (IPv4 only)
---------------------
Your public IPv4 is 23.**.**.**

Location                Provider        Speed
--------                --------        -----
CDN                     Cachefly        267MB/s

Atlanta, GA, US         @sohamb03       76.6MB/s
Dallas, TX, US          Softlayer       105MB/s
San Jose, CA, US        Softlayer       37.4MB/s
Washington, DC, US      Leaseweb        56.1MB/s

Sao Paulo, Brazil       Softlayer       2.20MB/s

Singapore               Softlayer       8.31MB/s
Taiwan                  Hinet           326KB/s
Tokyo, Japan            Linode          13.3MB/s

Nuremberg, Germany      Hetzner         14.8MB/s
Rotterdam, Netherlands  id3.net         58.1MB/s
Haarlem, Netherlands    Leaseweb        178MB/s
Milan, Italy            Softlayer       6.87MB/s

Sydney, AU              Future Hosting  351KB/s


Buffered Sequential Write Speed
-------------------------------
I/O (1st run)   : 307 MB/s
I/O (2nd run)   : 651 MB/s
I/O (3rd run)   : 751 MB/s
Average I/O     : 569.667 MB/s

-------------------------------------------------------------------

(3) Debian 10 Benchmark Test
Benchmark started on Wed 19 May 2021 04:49:22 PM EDT
Full benchmark log: /root/bench.log

System Info
-----------
Processor       : Intel® Xeon® CPU E5-2670 v2 @ 2.50GHz
CPU Cores       : 2 @ 2499.998 MHz
Memory          : 7978 MiB
Swap            : 31 MiB
Uptime          : 6 min,

OS              : Debian GNU/Linux 10 (buster)
Arch            : x86_64 (64 Bit)
Kernel          : 4.19.0-16-amd64
Hostname        : kvm-Post4VPS-Dallas


Speedtest (IPv4 only)
---------------------
Your public IPv4 is 23.**.**.**

Location                Provider        Speed
--------                --------        -----
CDN                     Cachefly        94.0MB/s

Atlanta, GA, US         @sohamb03       70.9MB/s
Dallas, TX, US          Softlayer       88.1MB/s
San Jose, CA, US        Softlayer       35.7MB/s
Washington, DC, US      Leaseweb        52.4MB/s

Sao Paulo, Brazil       Softlayer       6.56MB/s

Singapore               Softlayer       6.71MB/s
Taiwan                  Hinet           326KB/s
Tokyo, Japan            Linode          14.2MB/s

Nuremberg, Germany      Hetzner         14.5MB/s
Rotterdam, Netherlands  id3.net         62.8MB/s
Haarlem, Netherlands    Leaseweb        126MB/s
Milan, Italy            Softlayer       6.16MB/s

Sydney, AU              Future Hosting  350KB/s


Buffered Sequential Write Speed
-------------------------------
I/O (1st run)   : 344 MB/s
I/O (2nd run)   : 599 MB/s
I/O (3rd run)   : 817 MB/s
Average I/O     : 586.667 MB/s


OK.  I'm now ready to start with @Mashiro's tutorial for installing a WP site from Debian and Nginx.