On 14/02/06, Will McDonald <wmcdonald@xxxxxxxxx> wrote: > On 14/02/06, Andrew.Bridgeman@xxxxxxxxxxxxxx > <Andrew.Bridgeman@xxxxxxxxxxxxxx> wrote: > > > > > > I have had a problem on our Redhat Version 3 servers for a while now and i > > have been unable to find out what the issue is. Basically when we reboot > > our servers, within two weeks the memory used on the servers is 3.2gig so > > we only have 350 mega bytes of memory left and it is still decreasing by > > the day. I cannot see any processes that are causing this issue. Below is > > what i get with the top command, How do i identify the problem, has anyone > > seen this before and how was it resolved without rebooting the machines > > every 3 -4 weeks. > > The kernel will use up all available RAM over time as efficiently as > possible so seeing a system using the majority of its memory isn't > necessarily something to worry about. > > http://www.puschitz.com/TuningLinuxForOracle.shtml#CheckingPhysicalMemory > > "Linux tries to use all the memory for disk buffers and cache. It > helps the system to run faster because disk information is already in > memory and Linux doesn't have to read it from disk again. If space is > needed by a program or application like Oracle, Linux will make the > space available immediately. So if your system runs for a while, you > will usually see a small number for "free" in the first line, and > there is nothing to be worried about." Actually, I should probably add, that this is nothing to worry about as long as the system's not swapping excessively (where "excessively" usually equates to "at all" :)) Run "vmstat 5" and watch the ---swap-- column's si/so values. As long as those remain 0 / 0 most of the time you're OK. Will. -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list
