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From within a Python application, how can I get the total amount of RAM of the system and how much of it is currently free, in a cross-platform way?
Ideally, the amount of free RAM should consider only physical memory that can actually be allocated to the Python process.
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del and gc. collect() are the two different methods to delete the memory in python. The clear memory method is helpful to prevent the overflow of memory. We can delete that memory whenever we have an unused variable, list, or array using these two methods.
The function psutil. virutal_memory() returns a named tuple about system memory usage. The third field in the tuple represents the percentage use of the memory(RAM). It is calculated by (total – available)/total * 100 .
Use the os Module to Retrieve Current CPU Usage in Python We can use the cpu_count() function from this module to retrieve the CPU usage. The psutil. getloadavg() function provides the load information about the CPU in the form of a tuple. The result obtained from this function gets updated after every five minutes.
Have you tried SIGAR - System Information Gatherer And Reporter? After install
import os, sigar
sg = sigar.open()
mem = sg.mem()
sg.close()
print mem.total() / 1024, mem.free() / 1024
Hope this helps
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psutil would be another good choice. It also needs a library installed however.
>>> import psutil
>>> psutil.virtual_memory()
vmem(total=8374149120L, available=2081050624L, percent=75.1,
used=8074080256L, free=300068864L, active=3294920704,
inactive=1361616896, buffers=529895424L, cached=1251086336)
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