Info about Kswapd process in Linux
Posted on 2010-08-30
Today one of our core production server which runs Oracle Database (on RHEL 5.5 64bit) was showing high CPU utilization, due to which it caused outage on several applications which have dependency on that server. This server is connected to SAN storage. While investigating, I found a kernel process by name "Kswapd" (3 to 5 numbers) are occupying the major portion of CPU resource (showing 100%) and it increased the load average on the server to multi-fold. On checking the details about this process, I came to know this process basically does the swapping between RAM and swap memory. By then, I was asked to investigate what caused the server to do so much of page swapping which caused the degraded performance on the server. My question is, is there anyway to find the details about the "Kswapd" process to know which job/process/application caused so much of paging. In general, I want to know the method to analyse the details about a particular process running on Linux system.
Any ideas would be a great help !
Thanks in advance.