I want to use pure java to get the stats of disk and network. Especially: In Java, how to get disk write and read bytes per seconds, network tx bytes and rx bytes per seconds?
Is that possible?
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[What have you tried](http://mattgemmell.com/what-have-you-tried/)??? – Jordi Castilla Aug 17 '15 at 11:23
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I use java call sar command, but some system does not have it – jamee Aug 17 '15 at 13:24
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And I found org.hyperic.sigar, but It only provides the total bytes, how to get bytes/sec? total bytes/ uptime? – jamee Aug 17 '15 at 13:27
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The proc file system and sysfs give access to statistics like this.
You can read the network tx and rx from /proc/net/dev for example.
Disk statistics can be found in /proc/diskstats.
Joni
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I read /proc/net/dev, there are total received bytes and total transmit bytes, but how to get the bytes/secs? total received bytes / uptime? – jamee Aug 17 '15 at 13:23
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That gives you the average speed bytes/sec for the entire uptime, which is probably not interesting. If you want to know what the transmission speed is "now" it's either 0 or the speed of the interface, which is also not very interesting. Maybe you could read the file every N seconds, compute the difference and divide by N, giving you the average speed over the N-second period. – Joni Aug 17 '15 at 13:39
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I believe you're asking something similar to the following: Detect CPU Speed/Memory/Internet Speed using Java?.
You may also have some success using the java.lang.management package. Some boilerplate is described here.
