我注意到 IOwait 非常高,甚至从 NetBeans 复制/粘贴到 Firefox 也需要几分钟并且挂起很长时间。在 powertop 中,我注意到:
Usage Events/s Category Description
0.0 pkts/s Device Network interface: eth1 (wl)
100.0% Device Audio codec hwC0D0: Realtek
75.7% Device Display backlight
100.0% Device USB device: usb-device-05ac-8205
308.1 µs/s 16.9 Process [rcu_sched]
317.3 µs/s 1.7 Process [ksoftirqd/0]
2.6 ms/s 4.6 Process compiz
1.8 ms/s 15.0 Process gnome-terminal
8.0 ms/s 0.00 kWork acpi_os_execute_deferred
7.3 ms/s 0.00 Timer wl_timer
6.3 ms/s 34.6 Process /usr/bin/find / -ignore_readdir_race ( -fstype NFS -o -fstype nfs -o -fstype nfs4 -o -fstype afs -o -fstype binfmt_misc -o -fst
2.8 ms/s 16.1 Process /usr/bin/X :0 -core -auth /var/run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch -background none
2.4 ms/s 0.15 Process [kswapd0]
1.3 ms/s 0.00 Process /usr/sbin/preload -s /var/lib/preload/preload.state
1.1 ms/s 0.00 Process /usr/sbin/macfanctld
1.0 ms/s 14.3 Interrupt [45] i915
0.9 ms/s 7.0 Timer tick_sched_timer
0.7 ms/s 0.00 Interrupt [21] uhci_hcd:usb7
0.7 ms/s 10.2 kWork od_dbs_timer
659.0 µs/s 0.05 Process indicator-multiload
649.5 µs/s 0.4 Interrupt [9] RCU(softirq)
643.8 µs/s 0.00 Process /usr/lib/x86_64-linux-gnu/hud/hud-service
641.7 µs/s 33.5 Interrupt [4] block(softirq)
629.7 µs/s 0.7 Process /usr/lib/unity/unity-panel-service
585.4 µs/s 0.05 Process powertop
498.7 µs/s 0.00 Interrupt [43] SATA controller
371.8 µs/s 0.00 Timer delayed_work_timer_fn
301.4 µs/s 0.15 kWork atp_reinit
299.4 µs/s 0.05 kWork disk_events_workfn
185.3 µs/s 13.5 Interrupt [21] ata_piix
171.3 µs/s 2.6 Timer hrtimer_wakeup
162.5 µs/s 0.05 Process [ksoftirqd/1]
152.6 µs/s 0.10 Process /usr/bin/python3 /usr/bin/indicator-cpufreq
148.5 µs/s 0.00 Interrupt [0] timer/0
146.2 µs/s 2.4 Process /usr/sbin/mysqld
134.8 µs/s 0.10 Process /usr/lib/x86_64-linux-gnu/indicator-application-service
121.7 µs/s 0.00 Interrupt [1] timer(softirq)
115.9 µs/s 0.00 Timer timeout_func
109.8 µs/s 0.00 Timer rh_timer_func
109.7 µs/s 0.00 Process /usr/bin/sort -z -f
109.3 µs/s 0.7 Interrupt [6] tasklet(softirq)
102.3 µs/s 0.00 Process //bin/dbus-daemon --fork --print-pid 5 --print-address 7 --session
101.1 µs/s 0.00 Interrupt [21] ehci_hcd:usb1
78.5 µs/s 0.15 Interrupt [7] sched(softirq)
这是什么发现,每秒 34.6 个事件,是什么让一切都变得缓慢?
答案1
它可能是由 cronjob 启动的,并且正在为 locatedb 运行索引器。运行时,它会使进程变慢,但它应该每天运行一次,并且不应该花费太长时间。
请在此处查看 Debian 的相关信息(您的 cron 可能与 cron.daily 不同):http://lists.debian.org/debian-user/2011/07/msg00678.html和http://forums.opensuse.org/english/get-technical-help-here/applications/448976-mysterious-find.html