Stop the process-list pipeline writing broken-pipe noise to stderr

2026-08-21 08:26:28 -04:00
parent 666e1ebab2
commit fe23c59e0c
1 changed files with 4 additions and 1 deletions
@@ -427,7 +427,10 @@ function vv_memory_breakdown(): array {

    // Top processes by RSS — group same-named procs, take top 5
    $grouped = [];
-    $psOut = shell_exec("ps -eo comm,rss --sort=-rss 2>/dev/null | tail -n +2 | head -40") ?: '';
+    // stderr silenced for the pipeline, not just for ps: head -40 exits on the fortieth line and
+    // leaves tail writing into a closed pipe, which tail reports. Harmless, but it went to stderr
+    // once a minute from the cache writer on both hosts, and the repair sweep reads that log.
+    $psOut = shell_exec("{ ps -eo comm,rss --sort=-rss | tail -n +2 | head -40; } 2>/dev/null") ?: '';
    foreach (explode("\n", trim($psOut)) as $line) {
        $parts = preg_split('/\s+/', trim($line), 2);
        if (count($parts) === 2 && is_numeric($parts[1]) && (int)$parts[1] > 0)