cron job error : c queue max run limit reached

在cron job的日志中发现以下报错：

! c queue max run limit reached Wed Aug 28 12:56:00 2013
! rescheduling a cron job Wed Aug 28 12:56:00 2013

报错显示cron job达到了队列最大限制。

检查一下cron服务

#> svcs -p cron
STATE          STIME    FMRI
online         Aug_05   svc:/system/cron:default
                 Aug_05    15979 cron

用ptree检查一下cron进程的进程树

#> ptree 15979
15979 /usr/sbin/cron
19043 sh -c [ -x /home/software/ICT/scripts/ict_monitor.sh ] && /home/software/ICT/sc
    19044 /bin/sh /home/software/ICT/scripts/ict_monitor.sh
      19373 egrep -i detached|disable|badlog|stale|sync|nodevice
        19374 /usr/sbin/vxprint -hrt
28604 sh -c [ -x /home/software/ICT/scripts/ict_monitor.sh ] && /home/software/ICT/sc
    28605 /bin/sh /home/software/ICT/scripts/ict_monitor.sh
      28945 egrep -i detached|disable|badlog|stale|sync|nodevice
        28946 /usr/sbin/vxprint -hrt
7653 sh -c [ -x /home/software/ICT/scripts/ict_monitor.sh ] && /home/software/ICT/sc
    7654 /bin/sh /home/software/ICT/scripts/ict_monitor.sh
      7984 egrep -i detached|disable|badlog|stale|sync|nodevice
        7985 /usr/sbin/vxprint -hrt
17335 sh -c [ -x /home/software/ICT/scripts/ict_monitor.sh ] && /home/software/ICT/sc
    17336 /bin/sh /home/software/ICT/scripts/ict_monitor.sh
      17665 egrep -i detached|disable|badlog|stale|sync|nodevice
        17666 /usr/sbin/vxprint -hrt
26413 sh -c [ -x /home/software/ICT/scripts/ict_monitor.sh ] && /home/software/ICT/sc
    26414 /bin/sh /home/software/ICT/scripts/ict_monitor.sh
      26745 egrep -i detached|disable|badlog|stale|sync|nodevice
        26746 /usr/sbin/vxprint -hrt
....

进程树显示出cron进程调用的后台任务情况，由于某些原因这些脚本无法正常运行，导致了cron队列超限。

重启cron服务

#> svcadm restart cron
#> svcs -a | grep cron
online         12:57:40 svc:/system/cron:default
#> svcs -p cron
STATE          STIME    FMRI
online         12:57:40 svc:/system/cron:default
               12:57:40    19339 cron

重启服务后，cron队列被清空。问题得到解决。

巴特西

cron job error : c queue max run limit reached

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