milvus not running on one CPU

[vuvova]

when I run various DB, I can see in top that they take 99%-100% CPU. Which is correct, ann-benchmarks (w/o batch) is one-CPU benchmarks and passes a CPU number to the containerd.

Milvus starts three further containers on its own, they aren't limited to that initial CPU and it routinely takes 350%-400% CPU in top. This is of course unfair and invalidates its results.

I've used this patch to benchmark milvus:

--- a/ann_benchmarks/algorithms/milvus/Dockerfile
+++ b/ann_benchmarks/algorithms/milvus/Dockerfile
@@ -16,9 +16,11 @@ RUN echo \
 RUN apt-get update 
 RUN apt-get install -y wget docker-ce-cli docker-compose-plugin
 
+RUN pip3 install setuptools==80.6.0  marshmallow==3.26.2
 RUN pip3 install pymilvus==2.4.1
 RUN python3 -c "from pymilvus import Collection"
 
 # Install milvus standalone by docker-compose.yml
 RUN wget https://github.com/milvus-io/milvus/releases/download/v2.4.1/milvus-standalone-docker-compose.yml -O docker-compose.yml
 RUN sed -i 's|${DOCKER_VOLUME_DIRECTORY:-.}|/tmp|g' docker-compose.yml
+RUN sed -i 's|^    image:.*|&\n    cpus: 1|g' docker-compose.yml

the first change gets modules that work, latest versions don't. The second limits milvus container to 1 CPU. Two other containers (with etcd and minio) don't do much, so I didn't bother trying to bind them all three to the same CPU.