Thanks for your prompt response. This is RAM and swap memory details.
total used free shared buffers cached
Mem: 7985 2384 5600 0 111 1522
-/+ buffers/cache: 751 7234
Swap: 4000 17 3982
Sorry ..What is memory profiler ? How to activate that ?
Originally Posted by AlucardZero
You're running out of memory. Reduce your applications' memory usage or add more RAM or add more swap.
one Apache tuning guide.
Highly doubtful. Where's your proof? Have you run a memory profiler?