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Merge pull request #106307 from cynepco3hahue/e2e_node_fix_memory_manager_multi_NUMA

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e2e_node: provide an option to specify hugepages on the specific NUMA node
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Kubernetes Prow Robot 2021-12-07 17:26:25 -08:00 committed by GitHub
commit 4aba017280
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2 changed files with 18 additions and 7 deletions
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20
test/e2e_node/hugepages_test.go
View File

@ -118,7 +118,7 @@ func makePodToVerifyHugePages(baseName string, hugePagesLimit resource.Quantity,
}
// configureHugePages attempts to allocate hugepages of the specified size
func configureHugePages(hugepagesSize int, hugepagesCount int) error {
func configureHugePages(hugepagesSize int, hugepagesCount int, numaNodeID *int) error {
// Compact memory to make bigger contiguous blocks of memory available
// before allocating huge pages.
// https://www.kernel.org/doc/Documentation/sysctl/vm.txt
@ -128,16 +128,26 @@ func configureHugePages(hugepagesSize int, hugepagesCount int) error {
}
}
// e.g. hugepages/hugepages-2048kB/nr_hugepages
hugepagesSuffix := fmt.Sprintf("hugepages/hugepages-%dkB/%s", hugepagesSize, hugepagesCapacityFile)
// e.g. /sys/kernel/mm/hugepages/hugepages-2048kB/nr_hugepages
hugepagesFile := fmt.Sprintf("/sys/kernel/mm/%s", hugepagesSuffix)
if numaNodeID != nil {
// e.g. /sys/devices/system/node/node0/hugepages/hugepages-2048kB/nr_hugepages
hugepagesFile = fmt.Sprintf("/sys/devices/system/node/node%d/%s", *numaNodeID, hugepagesSuffix)
}
// Reserve number of hugepages
// e.g. /bin/sh -c "echo 5 > /sys/kernel/mm/hugepages/hugepages-2048kB/vm.nr_hugepages"
command := fmt.Sprintf("echo %d > %s-%dkB/%s", hugepagesCount, hugepagesDirPrefix, hugepagesSize, hugepagesCapacityFile)
// e.g. /bin/sh -c "echo 5 > /sys/kernel/mm/hugepages/hugepages-2048kB/nr_hugepages"
command := fmt.Sprintf("echo %d > %s", hugepagesCount, hugepagesFile)
if err := exec.Command("/bin/sh", "-c", command).Run(); err != nil {
return err
}
// verify that the number of hugepages was updated
// e.g. /bin/sh -c "cat /sys/kernel/mm/hugepages/hugepages-2048kB/vm.nr_hugepages"
command = fmt.Sprintf("cat %s-%dkB/%s", hugepagesDirPrefix, hugepagesSize, hugepagesCapacityFile)
command = fmt.Sprintf("cat %s", hugepagesFile)
outData, err := exec.Command("/bin/sh", "-c", command).Output()
if err != nil {
return err
@ -258,7 +268,7 @@ var _ = SIGDescribe("HugePages [Serial] [Feature:HugePages][NodeSpecialFeature:H
ginkgo.By(fmt.Sprintf("Configuring the host to reserve %d of pre-allocated hugepages of size %d", count, size))
gomega.Eventually(func() error {
if err := configureHugePages(size, count); err != nil {
if err := configureHugePages(size, count, nil); err != nil {
return err
}
return nil

5
test/e2e_node/memory_manager_test.go
View File

@ -324,7 +324,7 @@ var _ = SIGDescribe("Memory Manager [Disruptive] [Serial] [Feature:MemoryManager
if *is2MiHugepagesSupported {
ginkgo.By("Configuring hugepages")
gomega.Eventually(func() error {
return configureHugePages(hugepagesSize2M, hugepages2MiCount)
return configureHugePages(hugepagesSize2M, hugepages2MiCount, pointer.IntPtr(0))
}, 30*time.Second, framework.Poll).Should(gomega.BeNil())
}
})
@ -356,7 +356,8 @@ var _ = SIGDescribe("Memory Manager [Disruptive] [Serial] [Feature:MemoryManager
if *is2MiHugepagesSupported {
ginkgo.By("Releasing allocated hugepages")
gomega.Eventually(func() error {
return configureHugePages(hugepagesSize2M, 0)
// configure hugepages on the NUMA node 0 to avoid hugepages split across NUMA nodes
return configureHugePages(hugepagesSize2M, 0, pointer.IntPtr(0))
}, 90*time.Second, 15*time.Second).ShouldNot(gomega.HaveOccurred(), "failed to release hugepages")
}
})