Throttling the CPU on my laptop

Using CentOS 4.1 as the Operating System on my laptop for all my work, I’ve been able to throttle down my CPU when running on battery power to extend my battery life, much like the modes that Windoze provides.

$ echo 5 > /proc/acpi/processor/CPU0/throttling

If you want to go back up again:

$ echo 0 > /proc/acpi/processor/CPU0/throttling

Not to be thrown, the output of this file looks like:

[root@lamda ~]# cat /proc/acpi/processor/CPU0/throttling
state count:             8
active state:            T7
states:
    T0:                  00%
    T1:                  12%
    T2:                  25%
    T3:                  37%
    T4:                  50%
   *T5:                  62%
    T6:                  75%
    T7:                  87%
Tagged with: Linux

Related Posts

More CPUs or Newer CPUs

More CPUs or Newer CPUs

In a CPU-bound database workload, regardless of price, would you scale-up or scale-new? What if price was the driving factor, would you scale-up or scale-new? I am using as a baseline the first available AWS Graviton2 processor for RDS (r6g).

Read more
An Interesting Artifact with AWS RDS Aurora Storage

An Interesting Artifact with AWS RDS Aurora Storage

As part of using public datasets with my own Benchmarking Suite I wanted upsize a dataset for larger volume testing. I have always used the INFORMATION_SCHEMA.TABLES data_length and index_length columns as a sufficiently accurate measurement for actual disk space used.

Read more
How long does it take the ReadySet cache to warm up?

How long does it take the ReadySet cache to warm up?

During my setup of benchmarking I run a quick test-sysbench script to ensure my configuration is right before running an hour+ duration test. When pointing to a Readyset cache where I have cached the 5 queries used in the sysbench test, but I have not run any execution of the SQL, throughput went up 10x in 5 seconds.

Read more