Differences

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--- benchmarking [2016/03/15 09:42] – [Using hdparm] admin
+++ benchmarking [2022/10/29 16:15] (current) – external edit 127.0.0.1
@@ Line 184: / Line 184: @@
   - Step2: Run test<code bash>
 speedtest
+</code>
+==== network monitor with iptraf ====
+refer: http://www.tecmint.com/real-time-interactive-ip-lan-monitoring-with-iptraf-tool/
+  * Install <code bash>
+yum install iptraf
+</code>
+  * Run normal<code bash>
+iptraf
+</code>
+  * Monitor Traffic on eth0:<code bash>
+iptraf -s eth0
 </code>
 ===== Benchmark File System Read Write Performance =====
 refer: http://www.slashroot.in/linux-file-system-read-write-performance-test
 ==== Using dd command ====
-<code bash>
+  * Benchmarck the speed with which **data was cached to RAM memory, not to the disk**<code bash>
 dd if=/dev/zero of=speetest bs=1M count=100
 </code>output:<code>
@@ Line 195: / Line 206: @@
 104857600 bytes (105 MB) copied, 0.102163 s, 1.0 GB/s
 </code>
-<code bash>
+  * Ask dd command to report the speed only **after the data is synced with the disk**<code bash>
 dd if=/dev/zero of=speetest bs=1M count=100 conv=fdatasync
 </code>output:<code>