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abf85d70c2
A benchmark with go1.16 on amd64 resulted in an overall maximum memory usage of 15GiB. This means we now lower the `KUBE_PARALLEL_BUILD_MEMORY` to `20` to still have some room left. The benchmark has been done with the following `Dockerfile`: ```dockerfile FROM k8s.gcr.io/build-image/kube-cross:v1.16.0-1 RUN apt-get update && apt-get install -y time WORKDIR /go/src/k8s.io/kubernetes RUN git clone https://github.com/kubernetes/kubernetes ENV KUBE_PARALLEL_BUILD_MEMORY=0 RUN /usr/bin/time -v make -C kubernetes cross-in-a-container ``` The value of interest from the output: ``` Maximum resident set size (kbytes): 1847108 ``` The RSS is not the only value we have to consider. During the runtime I measured the usage of the cached memory, which gets peaks up to 15GiB. Test machine specs: - CPU: 2 x Intel Scalable Gold 5120 28-Core Processor @ 2.2GHz - RAM: 384GB - Disk: 1 x 3.8TB NVME - OS: Debian 10 (buster) Signed-off-by: Sascha Grunert <sgrunert@redhat.com>