![]() ![]() I wouldn’t go crazy – I used 50000 to see what happens and I might try a little more. Increasing it cut my CPU usage even more. The variable is idle_sleep_time and the default is 30000. I also don’t know if it will cause anyone problems but it didn’t on my setup – same as setting idle_max I guess – gotta try it and see. net files will work but I’m thinking if idle_max somehow gets set this should too. OK! I think we can do better as long as it doesn’t affect your performance. All of these issues are very noisy & time consuming and prevents me from concentrating on the actual lab and achieving the goal of working in speed.Īny help from your side will be highly appreciated Also Complex BGP topologies rise the CPU utilization and there is always routing adjacencies flapping as you mentioned. All previous cases are usually true when there is a scenario containing backup interfaces or PPPoFR. I have to shut some interfaces till some adjancencies come up, and then unshut these interfaces to make others coming up. Also, in complex OSPF topologies where there are lot of adjacencies, CPU utilization becomes high, and some adjacencies stuck in the exstart and then INIT phases. On INE forums, some mentioned changing the STP root to solve this, but it did not work for me. Sometimes pings do not work at all when layer 2 topology is too complex so that a packet has to go from switch to the STP root and come back through the same switch going to other layer 3 end. I have to shut/unshut interfaces to make this working or even sometimes to restart the whole lab. However, sometimes few devices can not ping each other and routing adjacencies do not come up. Usually devices see each other through CDP. Have any stability issues when running it at 100. If you use this tip please post in comments how much your CPU was decreased and if you net file here if you need it for reference. We will need four entries like this with an unique port for localhost and unique port for UDP. This is what a hypervisor entry looks like in the. Without idlemax applied my CPU runs at close to #GNS3 IDLE TIMER FULL#I was able to run the full INE topology at 20-40% CPU load on my Core2 2.13 GHz and 4 GB RAM. In Dynamips can explain this but lowering this value dramatically decreases I’m not sure about the magic behind this, maybe someone with more expertise Value references is used before going to sleep. According to GregĪt Hacki forum idlemax specifies how many times the address that the idle-PC There is not much information on what this value does. There is a value called idlemax which is related to the famous idle-PC value. Original credit goes to Journeyofanetworkengineer. I came across a post on IEOC (Internetwork Experts forum) on how toĭramatically decrease CPU usage. I do a lot of studying on my commute to my jobĪnd I run some smaller labs but I have not been able to run a full topology on #GNS3 IDLE TIMER WINDOWS#Running Dynamips takes a lot of CPU and memory and running a full CCIE topology onĪ Windows machine can be tough. ![]()
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