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package integrationtests
import "testing"
const (
mmapParquetDuration = 6
mmapWorkloadStartupEnv = "IOR_WORKLOAD_STARTUP_DELAY_MS=1000"
mmapScenarioAddressSpaceBytes = 8192
mmapMinAddressSpaceBytesTotal = mmapScenarioAddressSpaceBytes * 2
)
var mmapTraceArgs = []string{"-trace-syscalls", "openat,write,close,mmap,msync,mremap,munmap"}
// mmapMemoryLockTraceArgs traces the memory-locking cluster. mlock/mlock2/
// munlock are KindMem and mlockall/munlockall are KindNull; in all cases only
// the sys_enter_ tracepoint presence is asserted (return is UNCLASSIFIED).
var mmapMemoryLockTraceArgs = []string{"-trace-syscalls", "mlock,mlock2,munlock,mlockall,munlockall"}
func TestMmapBasic(t *testing.T) {
runScenarioResultWithIorArgs(t, "mmap-basic", []ExpectedEvent{
{
PathContains: "mmapfile.txt",
Tracepoint: "enter_mmap",
Comm: "ioworkload",
MinCount: 1,
},
}, mmapTraceArgs)
}
func TestMmapMsyncSync(t *testing.T) {
runScenarioResultWithIorArgs(t, "mmap-msync-sync", []ExpectedEvent{
{
PathContains: "msyncfile.txt",
Tracepoint: "enter_mmap",
Comm: "ioworkload",
MinCount: 1,
},
{
Tracepoint: "enter_msync",
Comm: "ioworkload",
MinCount: 1,
},
}, mmapTraceArgs)
}
func TestMmapMsyncInvalidFlags(t *testing.T) {
runScenarioResultWithIorArgs(t, "mmap-msync-invalid-flags", []ExpectedEvent{
{
PathContains: "msyncinvalidfile.txt",
Tracepoint: "enter_mmap",
Comm: "ioworkload",
MinCount: 1,
},
{
Tracepoint: "enter_msync",
Comm: "ioworkload",
MinCount: 1,
},
}, mmapTraceArgs)
}
func TestMmapMremapMunmap(t *testing.T) {
result, _ := runScenarioResultWithIorArgs(t, "mmap-mremap-munmap", []ExpectedEvent{
{
Tracepoint: "enter_mremap",
Comm: "ioworkload",
MinCount: 1,
},
{
Tracepoint: "enter_munmap",
Comm: "ioworkload",
MinCount: 1,
},
}, mmapTraceArgs)
assertEventBytesEqual(t, result, ExpectedEvent{
Tracepoint: "enter_mremap",
Comm: "ioworkload",
}, 0)
assertEventBytesEqual(t, result, ExpectedEvent{
Tracepoint: "enter_munmap",
Comm: "ioworkload",
}, 0)
}
// TestMmapMemoryLock asserts the memory-locking cluster fires its enter
// tracepoints end-to-end. mlock/mlock2/munlock (KindMem) and mlockall/
// munlockall (KindNull) all return UNCLASSIFIED, so enter-presence is the
// correct check. mlock/mlock2/mlockall may hit EPERM/ENOMEM under a low
// RLIMIT_MEMLOCK, but the sys_enter_ tracepoint fires regardless.
func TestMmapMemoryLock(t *testing.T) {
runScenarioResultWithIorArgs(t, "mmap-memory-lock", []ExpectedEvent{
{
Tracepoint: "enter_mlock",
Comm: "ioworkload",
MinCount: 1,
},
{
Tracepoint: "enter_munlock",
Comm: "ioworkload",
MinCount: 1,
},
{
Tracepoint: "enter_mlock2",
Comm: "ioworkload",
MinCount: 1,
},
{
Tracepoint: "enter_mlockall",
Comm: "ioworkload",
MinCount: 1,
},
{
Tracepoint: "enter_munlockall",
Comm: "ioworkload",
MinCount: 1,
},
}, mmapMemoryLockTraceArgs)
}
func TestMmapMremapMunmapAddressSpaceBytesInParquet(t *testing.T) {
h := newTestHarness(t)
h.WorkloadEnv = []string{mmapWorkloadStartupEnv}
path, pid, err := h.RunParquetWithIorArgs("mmap-mremap-munmap", mmapParquetDuration, mmapTraceArgs)
if err != nil {
t.Fatalf("run mmap-mremap-munmap parquet scenario: %v", err)
}
rows := filterRecordsByPID(readParquetRecords(t, path), uint32(pid))
if len(rows) == 0 {
t.Fatalf("expected parquet rows for workload PID %d", pid)
}
var foundMremap, foundMunmap bool
var addressSpaceTotal uint64
for _, row := range rows {
switch row.Syscall {
case "mremap":
if row.Bytes != 0 {
t.Fatalf("mremap bytes = %d, want 0 (I/O bytes must stay separate)", row.Bytes)
}
if row.AddressSpaceBytes == mmapScenarioAddressSpaceBytes {
foundMremap = true
}
addressSpaceTotal += row.AddressSpaceBytes
case "munmap":
if row.Bytes != 0 {
t.Fatalf("munmap bytes = %d, want 0 (I/O bytes must stay separate)", row.Bytes)
}
if row.AddressSpaceBytes == mmapScenarioAddressSpaceBytes {
foundMunmap = true
}
addressSpaceTotal += row.AddressSpaceBytes
}
}
if !foundMremap {
t.Fatalf("expected mremap row with AddressSpaceBytes=%d", mmapScenarioAddressSpaceBytes)
}
if !foundMunmap {
t.Fatalf("expected munmap row with AddressSpaceBytes=%d", mmapScenarioAddressSpaceBytes)
}
if addressSpaceTotal < mmapMinAddressSpaceBytesTotal {
t.Fatalf("mremap+munmap AddressSpaceBytes total = %d, want >= %d", addressSpaceTotal, mmapMinAddressSpaceBytesTotal)
}
}
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