You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
29 lines
1.1 KiB
29 lines
1.1 KiB
# Preemption
|
|
|
|
## Question
|
|
|
|
- How do mixed criticality workloads perform under the Sledge scheduler policies?
|
|
- How does the latency of a high criticality workload that triggers preemption on a system under load compare to being the only workload on the system?
|
|
- What is the slowdown on the low priority workload?
|
|
- How does this affect aggregate throughput?
|
|
|
|
## Setup
|
|
|
|
The system is configured with admission control disabled.
|
|
|
|
The driver script drives a bimodal distribution of long-running low-priority and short-running high-priority workloads
|
|
|
|
Relative Deadlines are tuned such that the scheduler should always preempt the low-priority workload for the high-priority workload.
|
|
|
|
A driver script runs the two workloads separately as a baseline
|
|
|
|
It then runs them concurrently, starting the low-priority long-running workload first such that the system begins execution and accumulates requests in the data structures. The high-priority short-running workload then begins.
|
|
|
|
## Independent Variable
|
|
|
|
The Scheduling Policy: EDF versus FIFO
|
|
|
|
## Dependent Variables
|
|
|
|
Latency of high priority workload
|