mirror of
https://github.com/superseriousbusiness/gotosocial.git
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acc333c40b
When GTS is running in a container runtime which has configured CPU or memory limits or under an init system that uses cgroups to impose CPU and memory limits the values the Go runtime sees for GOMAXPROCS and GOMEMLIMIT are still based on the host resources, not the cgroup. At least for the throttling middlewares which use GOMAXPROCS to configure their queue size, this can result in GTS running with values too big compared to the resources that will actuall be available to it. This introduces 2 dependencies which can pick up resource contraints from the current cgroup and tune the Go runtime accordingly. This should result in the different queues being appropriately sized and in general more predictable performance. These dependencies are a no-op on non-Linux systems or if running in a cgroup that doesn't set a limit on CPU or memory. The automatic tuning of GOMEMLIMIT can be disabled by either explicitly setting GOMEMLIMIT yourself or by setting AUTOMEMLIMIT=off. The automatic tuning of GOMAXPROCS can similarly be counteracted by setting GOMAXPROCS yourself.
92 lines
2.3 KiB
Bash
92 lines
2.3 KiB
Bash
#!/bin/bash
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# Test the current package under a different kernel.
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# Requires virtme and qemu to be installed.
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set -eu
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set -o pipefail
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if [[ "${1:-}" = "--in-vm" ]]; then
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shift
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mount -t bpf bpf /sys/fs/bpf
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export CGO_ENABLED=0
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export GOFLAGS=-mod=readonly
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export GOPATH=/run/go-path
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export GOPROXY=file:///run/go-path/pkg/mod/cache/download
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export GOSUMDB=off
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export GOCACHE=/run/go-cache
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if [[ -d "/run/input/bpf" ]]; then
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export KERNEL_SELFTESTS="/run/input/bpf"
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fi
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readonly output="${1}"
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shift
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echo Running tests...
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go test -v -coverpkg=./... -coverprofile="$output/coverage.txt" -count 1 ./...
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touch "$output/success"
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exit 0
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fi
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# Pull all dependencies, so that we can run tests without the
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# vm having network access.
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go mod download
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# Use sudo if /dev/kvm isn't accessible by the current user.
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sudo=""
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if [[ ! -r /dev/kvm || ! -w /dev/kvm ]]; then
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sudo="sudo"
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fi
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readonly sudo
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readonly kernel_version="${1:-}"
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if [[ -z "${kernel_version}" ]]; then
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echo "Expecting kernel version as first argument"
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exit 1
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fi
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readonly kernel="linux-${kernel_version}.bz"
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readonly selftests="linux-${kernel_version}-selftests-bpf.bz"
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readonly input="$(mktemp -d)"
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readonly output="$(mktemp -d)"
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readonly tmp_dir="${TMPDIR:-/tmp}"
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readonly branch="${BRANCH:-master}"
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fetch() {
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echo Fetching "${1}"
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wget -nv -N -P "${tmp_dir}" "https://github.com/cilium/ci-kernels/raw/${branch}/${1}"
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}
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fetch "${kernel}"
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if fetch "${selftests}"; then
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mkdir "${input}/bpf"
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tar --strip-components=4 -xjf "${tmp_dir}/${selftests}" -C "${input}/bpf"
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else
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echo "No selftests found, disabling"
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fi
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echo Testing on "${kernel_version}"
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$sudo virtme-run --kimg "${tmp_dir}/${kernel}" --memory 512M --pwd \
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--rw \
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--rwdir=/run/input="${input}" \
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--rwdir=/run/output="${output}" \
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--rodir=/run/go-path="$(go env GOPATH)" \
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--rwdir=/run/go-cache="$(go env GOCACHE)" \
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--script-sh "PATH=\"$PATH\" $(realpath "$0") --in-vm /run/output" \
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--qemu-opts -smp 2 # need at least two CPUs for some tests
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if [[ ! -e "${output}/success" ]]; then
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echo "Test failed on ${kernel_version}"
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exit 1
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else
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echo "Test successful on ${kernel_version}"
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if [[ -v COVERALLS_TOKEN ]]; then
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goveralls -coverprofile="${output}/coverage.txt" -service=semaphore -repotoken "$COVERALLS_TOKEN"
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fi
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fi
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$sudo rm -r "${input}"
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$sudo rm -r "${output}"
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