Hi Viktor, 1) Please find the output of qshape in the link http://pastebin.com/pQ4h4pNY
2) Please find the "top" output at the time of peak hours top - 13:22:52 up 10:22, 3 users, load average: 5.36, 5.62, 5.62 Tasks: 276 total, 1 running, 275 sleeping, 0 stopped, 0 zombie Cpu0 : 1.0%us, 0.4%sy, 0.5%ni, 90.9%id, 7.2%wa, 0.0%hi, 0.0%si, 0.0%st Cpu1 : 1.9%us, 1.6%sy, 0.5%ni, 71.0%id, 24.3%wa, 0.1%hi, 0.7%si, 0.0%st Cpu2 : 0.9%us, 0.9%sy, 0.3%ni, 92.4%id, 5.3%wa, 0.0%hi, 0.3%si, 0.0%st Cpu3 : 0.9%us, 1.6%sy, 0.5%ni, 71.0%id, 25.1%wa, 0.2%hi, 0.8%si, 0.0%st Mem: 4138404k total, 457076k used, 3681328k free, 44916k buffers Swap: 4096532k total, 8k used, 4096524k free, 151240k cached 3) I ran the collate script sent by you. Checking that. Can you please suggest on the basis of qshape output and the CPU load?