loadmaster
loadmaster(负载大师) is designed to waste your machine performance. Powerful, flexible, simple.
Prerequisites
- Linux
- CMake 3.1 +
- C++ compiler with C++20 support
Build & Run
- Typical CMake building routine
- Statically linked by default
- Customizable runtime arguments specified by CLI args - see
<exe> -h - It's recommended to rename the executable as you want
Workload
CPU
- Load range is [0, 100] (each core)
- System overall CPU load 60% is a threshold; loadmaster CPU module will be temporarily disabled
- Scheduling interval is 100 milliseconds (
kScheduleIntervalMS) - Specify target load by
-l <load>; default: 200 (kDefaultCpuLoad) - Specify target worker thread number by
-c <count>; default: minimum required by load - Specify target scheduling algorithm (described below) by
-ca <algorithm>
Default Scheduler
- Try to dispatch target load to each worker thread uniformly
Random Normal Scheduler
- Worker thread load changes every 10 seconds
- Average load in 5 minutes is the specified value
- Normal distribution is used in load calculation
Memory
This module is disabled by default. Use -m <memory_mib> to specify an extra memory usage, then this process won't be seemed so weird.
Default Scheduler
- Memory usage changes every 45 seconds (
kMemoryScheduleIntervalSecond) - Range:
memory_mib*rand(kMemoryMinimumRatio, 1.0), 4KiB aligned - Memory block will be filled, and if block size larger than 32 MiB (
kMemoryNoThreadSpawnThresholdMiB), a new thread will be temporarily spawned in order to allocate and fill memory
Usage Sample
$ ./loadmaster -l 180 -ca rand_normal -m 32