Differences

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--- benchmark:disk_speedtest_using_hdparm [2016/07/10 00:43] – peter
+++ benchmark:disk_speedtest_using_hdparm [2019/11/26 20:51] (current) – removed peter
@@ Line 1: / Line 1: @@
-====== Benchmark - Disk Speedtest using hdparm ======
-The **hdparm** tool is available out of the box in most Linux distributions.
-<code bash>
-hdparm -tT /dev/sda1
-</code>
-Result:
-<code>
-/dev/sda1:
- Timing cached reads:   20780 MB in  1.99 seconds = 10416.77 MB/sec
- Timing buffered disk reads: 620 MB in  3.01 seconds = 206.13 MB/sec
-</code>
-There are multiple things to understand here in the above hdparm results.  The **-t** Option will show you the speed of reading from the cache buffer (Thats why its much much higher).
-The **-T** option will show you the speed of reading without precached buffer(which from the above output is low 206.13 MB/sec as shown above.)
-The hdparm output shows you both the cached reads and disk reads separately.