WhiteSky Labs interview questions

First round was a pep talk. Generally of the previous projects and experience. Next round was face to face interview. Interviewers are Very friendly. The place looked small definitely but it was good.

First round is initial evaluation round via telephone. It has taken around 15min. Complete concentration on performance improvements I have done in my previous projects. Has gone into deep level and step by step. Cleared the first telephonic round and got call for F2F interview. They need a person with very good debugging skills rather than development experience. - What is memory foot print - How do you analyse the heap - how to fix out of memory errors when you don't even have heap dump. - How do you prove your code is not caused out of memory error to client. - How do you replicate out of memory errors with out heap dump. - Few questions on Linux procs - Serializable and externizable - compare and contrast - how do you compress the data when you are serializing - few multi threading questions, Intrinsic locks - How do you make sure that one out of memory error from one module should not cause complete application to crash?