Virtual Memory under top shows 10x higher on 2.6 kernel then on 2.4
Posted on 2006-05-08
Hi, I am comparing how an application runs on a 2.6 kernel (redhat EL4.3) to how it runs on a 2.4 kernel (redhat 7.3). Using the ps command I see similar results in the SIZE column; however, using the top command I see a huge difference in the VIRT column. The RES and SHR are about the same between 2.4 and 2.6, but the VIRT is 10 times higher in the 2.6 kernel (2.4 = 4800, 2.6= 41000).
I have the same top version (procps-3.2.3-8.3). My guess is that teh VIRT in 2.4 is not working...? I want to 100% sure that the application does not actually behave badly in 2.6... Thanks