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Added server benchmarking guide
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<!--
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Title: How to benchmark CPU, memory, disk and network performance of server using Speedtest and SysBench
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Description: Learn how to benchmark CPU, memory, disk and network performance of server using Speedtest and SysBench.
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Author: Sun Knudsen <https://github.com/sunknudsen>
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Contributors: Sun Knudsen <https://github.com/sunknudsen>
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Publication date: 2020-07-31T12:39:56.670Z
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-->
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# How to benchmark CPU, memory, disk and network performance of server using Speedtest and SysBench
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> Ideally, run benchmark tests on development servers to avoid installing and running Speedtest and SysBench on production servers.
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## Requirements
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- Virtual private server (VPS) or dedicated server running Debian 10 (buster)
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## Installation guide
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### Step 1: check if Backports repository is enabled
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```shell
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cat /etc/apt/sources.list | grep "buster-backports"
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```
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### Step 2: enable Backports repository (only run command if previous step returned nothing)
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```shell
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cat << "EOF" >> /etc/apt/sources.list
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deb http://deb.debian.org/debian buster-backports main
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EOF
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apt update
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```
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### Step 3: check if GnuPG is installed
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```console
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$ gpg --version
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-bash: gpg: command not found
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```
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### Step 4: install GnuPG (only run command if previous step returned `-bash: gpg: command not found`)
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```shell
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apt install -y gnupg2
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```
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### Step 5: import [Speedtest](https://www.speedtest.net/)’s PGP public key and enable Speedtest’s repository
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```console
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$ apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 379CE192D401AB61
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Executing: /tmp/apt-key-gpghome.hyKJZh5s4e/gpg.1.sh --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 379CE192D401AB61
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gpg: key 379CE192D401AB61: public key "Bintray (by JFrog) <bintray@bintray.com>" imported
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gpg: Total number processed: 1
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gpg: imported: 1
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$ echo "deb https://ookla.bintray.com/debian buster main" | tee /etc/apt/sources.list.d/speedtest.list
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deb https://ookla.bintray.com/debian buster main
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$ apt update
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```
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### Step 6: install Speedtest and SysBench
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```shell
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apt install -y speedtest sysbench
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```
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---
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## Usage guide
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### Benchmark network
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Depending on iptables configuration, running the following commands may be required.
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```shell
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iptables -A OUTPUT -p tcp -m tcp --dport 8080 -m state --state NEW -j ACCEPT
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ip6tables -A OUTPUT -p tcp -m tcp --dport 8080 -m state --state NEW -j ACCEPT
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```
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```console
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$ speedtest
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Speedtest by Ookla
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Server: Vodafone - Reykjavík (id = 4141)
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ISP: 1984 ehf
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Latency: 0.64 ms (0.06 ms jitter)
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Download: 95.82 Mbps (data used: 158.0 MB)
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Upload: 95.63 Mbps (data used: 155.7 MB)
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Packet Loss: 0.0%
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Result URL: https://www.speedtest.net/result/c/19654353-3d2e-4ed3-ac22-824e1376b838
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```
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Network download speed: 95.82 Mbps
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Network upload speed: 95.63 Mbps
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### Benchmark CPU
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```console
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$ sysbench cpu --cpu-max-prime=20000 run
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sysbench 1.0.18 (using system LuaJIT 2.1.0-beta3)
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Running the test with following options:
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Number of threads: 1
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Initializing random number generator from current time
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Prime numbers limit: 20000
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Initializing worker threads...
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Threads started!
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CPU speed:
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events per second: 403.87
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General statistics:
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total time: 10.0012s
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total number of events: 4040
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Latency (ms):
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min: 2.43
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avg: 2.47
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max: 4.60
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95th percentile: 2.52
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sum: 9995.53
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Threads fairness:
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events (avg/stddev): 4040.0000/0.00
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execution time (avg/stddev): 9.9955/0.00
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```
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CPU events per second: 403.87
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### Benchmark memory
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```console
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$ sysbench memory run
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sysbench 1.0.18 (using system LuaJIT 2.1.0-beta3)
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Running the test with following options:
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Number of threads: 1
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Initializing random number generator from current time
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Running memory speed test with the following options:
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block size: 1KiB
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total size: 102400MiB
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operation: write
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scope: global
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Initializing worker threads...
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Threads started!
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Total operations: 40219144 (4020984.62 per second)
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39276.51 MiB transferred (3926.74 MiB/sec)
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General statistics:
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total time: 10.0003s
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total number of events: 40219144
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Latency (ms):
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min: 0.00
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avg: 0.00
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max: 1.84
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95th percentile: 0.00
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sum: 4358.06
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Threads fairness:
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events (avg/stddev): 40219144.0000/0.00
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execution time (avg/stddev): 4.3581/0.00
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```
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Memory speed: 3926.74 MiB/sec
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### Benchmark disk
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```console
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$ sysbench fileio --file-total-size=8G prepare
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sysbench 1.0.18 (using system LuaJIT 2.1.0-beta3)
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128 files, 65536Kb each, 8192Mb total
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Creating files for the test...
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Extra file open flags: (none)
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Creating file test_file.0
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Creating file test_file.1
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Creating file test_file.2
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Creating file test_file.3
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Creating file test_file.4
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Creating file test_file.5
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...
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Creating file test_file.127
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8589934592 bytes written in 85.92 seconds (95.34 MiB/sec).
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$ sysbench fileio --file-total-size=8G --file-test-mode=rndrw --max-time=300 --max-requests=0 run
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sysbench 1.0.18 (using system LuaJIT 2.1.0-beta3)
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Running the test with following options:
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Number of threads: 1
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Initializing random number generator from current time
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Extra file open flags: (none)
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128 files, 64MiB each
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8GiB total file size
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Block size 16KiB
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Number of IO requests: 0
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Read/Write ratio for combined random IO test: 1.50
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Periodic FSYNC enabled, calling fsync() each 100 requests.
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Calling fsync() at the end of test, Enabled.
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Using synchronous I/O mode
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Doing random r/w test
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Initializing worker threads...
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Threads started!
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File operations:
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reads/s: 2727.09
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writes/s: 1818.06
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fsyncs/s: 5818.16
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Throughput:
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read, MiB/s: 42.61
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written, MiB/s: 28.41
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General statistics:
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total time: 300.0100s
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total number of events: 3109023
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Latency (ms):
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min: 0.00
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avg: 0.10
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max: 11.59
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95th percentile: 0.23
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sum: 298089.49
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Threads fairness:
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events (avg/stddev): 3109023.0000/0.00
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execution time (avg/stddev): 298.0895/0.00
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$ sysbench fileio --file-total-size=8G cleanup
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sysbench 1.0.18 (using system LuaJIT 2.1.0-beta3)
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Removing test files..
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```
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Disk read throughput: 42.61 MiB/s
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Disk write throughput: 28.41 MiB/s
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