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package integrationtests
import (
"strings"
"testing"
)
const (
pollingParquetDuration = 10
pollingWorkloadStartupEnv = "IOR_WORKLOAD_STARTUP_DELAY_MS=1000"
)
var pollingTraceArgs = []string{"-trace-syscalls", "epoll_ctl,epoll_wait,epoll_pwait,epoll_pwait2,poll,ppoll,select,pselect6"}
func TestPollingEpollTracepoints(t *testing.T) {
h := newTestHarness(t)
h.WorkloadEnv = []string{pollingWorkloadStartupEnv}
result, pid, err := h.RunWithIorArgs("polling-epoll", defaultDuration, pollingTraceArgs)
if err != nil {
t.Fatalf("run scenario polling-epoll: %v", err)
}
AssertNoUnexpectedPID(t, result, pid)
AssertNoUnexpectedComm(t, result, "ioworkload")
AssertEventsPresent(t, result, []ExpectedEvent{
{Tracepoint: "enter_epoll_ctl", Comm: "ioworkload", MinCount: 1},
{Tracepoint: "enter_epoll_wait", Comm: "ioworkload", MinCount: 1},
{Tracepoint: "enter_epoll_pwait", Comm: "ioworkload", MinCount: 1},
{Tracepoint: "enter_poll", Comm: "ioworkload", MinCount: 1},
{Tracepoint: "enter_ppoll", Comm: "ioworkload", MinCount: 1},
{Tracepoint: "enter_select", Comm: "ioworkload", MinCount: 1},
{Tracepoint: "enter_pselect6", Comm: "ioworkload", MinCount: 1},
})
if !hasTracepoint(result, "enter_epoll_pwait2") {
t.Log("enter_epoll_pwait2 not observed; treating as unsupported-kernel path")
}
}
func TestPollingEpollReadyCountInParquet(t *testing.T) {
h := newTestHarness(t)
h.WorkloadEnv = []string{pollingWorkloadStartupEnv}
path, pid, err := h.RunParquetWithIorArgs("polling-epoll", pollingParquetDuration, pollingTraceArgs)
if err != nil {
t.Fatalf("run polling-epoll 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)
}
wantReadyCount := map[string]bool{
"epoll_wait": false,
"epoll_pwait": false,
"poll": false,
"ppoll": false,
"select": false,
"pselect6": false,
}
var sawPwait2 bool
var sawPwait2ReadyCount bool
for _, row := range rows {
switch row.Syscall {
case "epoll_wait", "epoll_pwait", "poll", "ppoll", "select", "pselect6":
if row.Ret > 0 {
wantReadyCount[row.Syscall] = true
}
if row.Bytes != 0 {
t.Fatalf("%s bytes = %d, want 0 for ready-count events", row.Syscall, row.Bytes)
}
case "epoll_pwait2":
sawPwait2 = true
if row.Ret > 0 {
sawPwait2ReadyCount = true
}
if row.Bytes != 0 {
t.Fatalf("%s bytes = %d, want 0 for ready-count events", row.Syscall, row.Bytes)
}
}
}
for syscall, ok := range wantReadyCount {
if !ok {
t.Fatalf("expected %s row with positive ready-count ret in parquet output", syscall)
}
}
if sawPwait2 && !sawPwait2ReadyCount {
t.Fatalf("expected epoll_pwait2 row with positive ready-count ret when epoll_pwait2 is present")
}
if !sawPwait2 {
t.Log("epoll_pwait2 parquet rows not observed; treating as unsupported-kernel path")
}
}
func hasTracepoint(result TestResult, tracepoint string) bool {
for _, rec := range result.Records {
if strings.Contains(rec.TraceID.String(), tracepoint) {
return true
}
}
return false
}
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