'10000 users' using jmeter is pretty tough on single machine, eventually jmeter will get stuck with 'OutOfMemoryError' and it will create a very large dump file. it would be better, if we use distributed jmeter and simulate distributed '10000 users'.

'10000 users' using jmeter is pretty tough on single machine considering given configuration, the maximum number of threads supported by jmeter will be 300 to 400 depending on your script, eventually jmeter will get stuck with 'OutOfMemoryError' and it will create a very large dump file. it would be best to use distributed jmeter and simulate distributed '10000 users' for creating load.