Issue the following commands to download and run the network speed test script: wget -O speedtest-cli Speedtest-cli is a command-line interface for testing internet bandwidth using. Using speedtest-cli for testing internet bandwidth To sum things up, no matter your experience level, ‘dd’ can be used as a quick check into your web server’s storage, memory, and CPU performance. Lower than that should prompt you to perform more accurate tests using BYTEmark or even unixbench. Now, ‘dd’ can also be used for a simple CPU benchmark using: dd if=/dev/zero bs=1M count=1024 | md5sumġ073741824 bytes (1.1 GB) copied, 2.5454 s, 422 MB/sįor most modern CPUs, you’ll want to see a minimum of 300 MB/s. ‘nproc’ prints the number of processing units (CPU cores) available. There is also information about the CPU caches and cache sharing, family, model, bogoMIPS, byte order, and stepping. The report includes the number of CPUs, threads, cores, etc. ‘lscpu’ gathers CPU architecture information from sysfs and /proc/cpuinfo. Suppose you would like to verify CPU speed and # of cores. In addition, more extensive tests can be performed using fio, bonnie++, or IOzone.
#BENCHMARK CPU SPEED TEST UPGRADE#
If your results point to poor read/write performance, you may want to upgrade hardware or switch your web hosts. Lastly, remember to delete the 1.1GB test file using this command: rm diskbench You should run this test a couple of times to find the average. So let’s test read speeds using memory buffer by repeating the previous command: dd if=diskbench of=/dev/null bs=1M count=1024 Using ‘dd’ to benchmark memory-buffered read performanceĪfter running the above command, the data will be pushed to memory-buffered cache. Now that cache is deleted, we can test the read performance of that ‘diskbench’ file using: dd if=diskbench of=/dev/null bs=1M count=1024
Now, let’s delete the server’s buffer cache to measure ‘read’ speeds directly from the hard drive: echo 3 | sudo tee /proc/sys/vm/drop_caches Using ‘dd’ to benchmark storage read performance A simple bash script to estimate Linux server performance using fio, iperf3, & Geekbench. We will also instruct ‘dd’ to sync this to disk and ensure that writes do not remain in memory (RAM), which would not give accurate write speed results if memory buffer is used (we will leave that for a later test).
We will use ‘dd’ to create a file named ‘diskbench’ with all zeroes. ‘dd’ is a command on Unix and Unix-like operating systems (such as Linux) whose primary purpose is to convert and copy a file. Now, let’s look into the ‘dd’ command we will be using. If you’re interested in super-fast SSD-based VPS hosting, you can request an invite here. The screenshot below shows a few dd commands being run on a tiny but under load (6GB RAM) StackLinux VPS. To get started, let’s try to identify or eliminate your web host/server from the bad-performance equation using ‘dd’ commands to benchmark your storage, memory and CPU performance. ‘dd’ requires no downloads and can quickly alert you to any performance bottlenecks and indicate if there’s a need for additional benchmarks using more complex tools.Īre you hosted on a Cloud, VPS, or Dedicated server and struggle with performance issues? When raising these issues to your web host, do they always seem to blame everything on your so-called “heavy” website? If you are tired of being hung out to dry, let’s do something about it. This article will highlight using the ‘dd’ Unix command for a quick benchmark of your Linux server or VPS.
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