Linux
ps輸出中的R/D標誌是什麼意思?
R / D
從是什麼意思ps ax
?是否說明有問題?3 ? R 522:45 [ksoftirqd/0] 4380 ? Rl 1240:31 gdm-session-worker [pam/gdm-launch-environment] 5938 ? Rs 0:00 ps ax 6148 ? Rl 1405:54 gnome-shell --mode=gdm
在
ps
手冊中,在“過程狀態程式碼”部分下:D uninterruptible sleep (usually IO) R running or runnable (on run queue) S interruptible sleep (waiting for an event to complete) T stopped by job control signal t stopped by debugger during the tracing W paging (not valid since the 2.6.xx kernel) X dead (should never be seen) Z defunct ("zombie") process, terminated but not reaped by its parent
An
R
表示程序在執行隊列中。它絕不表示存在問題。處於某種
D
狀態的程序不會立即處理信號,因為它目前卡在等待磁碟(通常,這就是程式碼中字母 D 的來源)。如果程序卡住較長時間或多個程序處於相同狀態,這將表明存在問題。問題可能與高 I/O 負載有關(例如,有太多程序想要從太慢的磁碟讀取數據)。還解釋了附加字元:
對於 BSD 格式和使用 stat 關鍵字時,可能會顯示其他字元:
< high-priority (not nice to other users) N low-priority (nice to other users) L has pages locked into memory (for real-time and custom IO) s is a session leader l is multi-threaded (using CLONE_THREAD, like NPTL pthreads do) + is in the foreground process group
有關的: