shell 命令 sleep 1 秒都会卡住，是什么原因

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1503 1 root S 3188 5% 0% /usr/sbin/nmbd -F 1502 1 root S 3096 5% 0% /usr/sbin/smbd -F 1536 1 root S 1808 3% 0% /usr/sbin/hostapd -P /var/run/wifi-ph 1221 1 root S 1640 3% 0% /sbin/netifd 1407 1 root S 1636 3% 0% /usr/sbin/uhttpd -f -h /www -r StarNe 13490 1221 root S 1600 3% 0% /usr/sbin/pppd nodetach ipparam wan i 1187 1 root S 1568 3% 0% /sbin/rpcd 14109 14101 root S 1492 2% 0% -ash 13403 1666 root S 1488 2% 0% {resetgpio25.sh} /bin/sh /root/resetg 1641 1 root S 1488 2% 0% /usr/sbin/ntpd -n -S /usr/sbin/ntpd-h 1666 1 root S 1484 2% 0% {checktty.sh} /bin/sh /root/checktty. 1669 1 root S 1484 2% 0% {check_update.sh} /bin/sh /root/check 14036 1669 root S 1476 2% 0% sleep 1800 14527 13403 root S 1476 2% 0% sleep 1 1 0 root S 1436 2% 0% /sbin/procd 1256 1 root S 1192 2% 0% /usr/sbin/odhcpd 1304 1 root S 1148 2% 0% /usr/sbin/dropbear -F -P /va

root

sbin

usr

sleep

5 replies

3IOhG7M0knRu5UlC

Jan 24, 2018 via Android

看下硬盘

koebehshian

Jan 24, 2018

@GooMS 是嵌入式设备
Filesystem 1K-blocks Used Available Use% Mounted on
rootfs 6592 3524 3068 53% /
/dev/root 8192 8192 0 100% /rom
tmpfs 30720 484 30236 2% /tmp
/dev/mtdblock6 6592 3524 3068 53% /overlay
overlayfs:/overlay 6592 3524 3068 53% /
tmpfs 512 0 512 0% /dev

koebehshian

Jan 24, 2018

@GooMS 本来想改成截图，改不了了，发了个新主题 https://www.v2ex.com/t/425473#reply1

3IOhG7M0knRu5UlC

Jan 24, 2018 via Android

@koebehshian 我有一次命令缓慢是因为磁盘性能太差。

koebehshian

Jan 24, 2018

@GooMS 放前台运行可以的，后台奇怪连 sleep 1 都会卡住，按理说 sleep 是个进程，过 1 秒自己结束完就自杀了，而且你可以从我的截图里看到，sleep1 的父进程，爷进程都还在的