Is continuous increase in virtual memory(private bytes) of process indicate memory leak...? I am using third party library. Continuous use of library leads to continuous increase of virtual memory.
So its a memory leak which can leads to continuous virtual memory increase or it can be any other reason.
It's impossible for us to say. Some applications naturally increase in memory size as you use them. Think of a word processor - its memory usage increases as you write. But you should have a good idea of the memory usage pattern of your own application, so you should be able to answer this question yourself.
Based on number of iterations you use the library, is the increase linear, exponential or logarithmic? Depending on which it can be either a caching strategy, a memory leak, both or nothing.