Why is my router CPU usage so high?

Why is my router CPU usage so high?

Software compression is known to take large percentages of CPU usage and with routers supporting various other functions, can become overloaded and cause network latency. Pre-compressed data can cause performance issues on routers when additional compression attempts are made on already compressed data packets.

What happens if CPU utilization gets too high?

The symptoms of high CPU usage are familiar: the cursor moves jerkily and slowly, and applications begin to lag or shut down. The workstation might even begin to physically heat up as it strains to perform tasks. When diagnosing a malfunctioning system, these are signs you should start by checking the processor.

What is router CPU load?

Common Causes CPU usage is the percentage of the time during which the CPU executes codes to the total time period. CPU usage is an important index to evaluate device performance. To view CPU usage, run the display cpu-usage command. If you see that CPU usage exceeds 70%, CPU usage is high.

How do you check CPU and memory on a Cisco router?

To find CPU usage due to the subprocesses and tasks operating under a specific process, use the show process cpu detailed command. To sort for high activity usage, use show process cpu sorted command. CPU usage can be monitored on a per-switch basis in a stacked environment.

How to detect high CPU utilization in a router?

Determine if the router shows symptoms of high CPU utilization at brief and unpredictable intervals. If so, periodically collect the output of the show processes cpu command. This shows if the high CPU utilization is caused by interrupts or by a certain process. Use this UNIX script.

How to troubleshoot high CPU utilization on Cisco 7200 and 7500 series routers?

On Cisco 7200 and Cisco 7500 series routers, issue the scheduler allocate 3000 1000 command. Determine if the router shows symptoms of high CPU utilization at brief and unpredictable intervals. If so, periodically collect the output of the show processes cpu command.

What to do when CPU usage is 100% on a router?

This provides time for you to run some commands, even if CPU usage is at 100 percent. On Cisco 7200 and Cisco 7500 series routers, issue the scheduler allocate 3000 1000 command. Determine if the router shows symptoms of high CPU utilization at brief and unpredictable intervals.

What to do if the CPU utilization is too high?

Determine if the router shows symptoms of high CPU utilization at brief and unpredictable intervals. If so, periodically collect the output of the show processes cpu command.