当超过这个阈值后,文件系统会把将缓存中的内存全部写入磁盘, 导致后续的IO请求都是同步的。将缓存写入磁盘时,有一个默认120秒的超时时间。 出现上面的问题的原因是IO子系统的处理速度不够快,不能在120秒将缓存中的数据全部写入磁盘。IO系统响应缓慢,导致越来越多的请求堆积,最终系统内存全部被占用,导致系统失去响应。 一般
1. 调整hung_task_timeout_secs内核参数 # 临时调整(立即生效,重启后失效) echo 600 > /proc/sys/kernel/hung_task_timeout_secs # 永久调整(添加到/etc/sysctl.conf) echo "kernel.hung_task_timeout_secs = 600" >> /etc/sysctl.conf sysctl -p 这将把hung task检测时间从默认的120秒延长到600秒,...
INFO: task multipathd:5832 blocked for more than 120 seconds. /proc/sys/kernel/hung_task_timeout_secs 结果是Linux系统BUG。 以下信息来自网络: 仔细阅读打印信息发现关键信息是“hung_task_timeout_secs”,通过搜索,发现这是linux kernel的一个bug。 大家对这个问题的解释也都比较一致,摘抄一段: By defaul...
[ 4082.854242] INFO: task docker:111571 blocked for more than 120 seconds. [ 4082.855441] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 4082.856124] docker D 0000000000000000 0 111571 1 0x00000080 [ 4082.856127] ffff881c01527ab0 0000000000000086 ffff881c332f5080...
linux 出错 “INFO: task xxxxxx: 634 blocked for more than 120 seconds.”的3种解决方案,/sbin/sysctl-wvm.dirty_ratio=10/sbin/sysctl-wvm.dirty_background_ratio=5sysctl-p(16
linux 出错 “INFO: task java: xxx blocked for more than 120 seconds.”的3种解决方案,1问题描述最近搭建的一个linux最小系统在运行到241秒时在控制台自动打印如下图信息,并且以后每隔120秒打印一次。仔细阅读打印信息发现关键信息是“hung_task_timeout_secs”,第一
(3)INFO: task blocked for more than 120 seconds. This is a know bug. By default Linux uses up to 40% of the available memory for file system caching. After this mark has been reached the file system flushes all outstanding data to disk causing all following IOs going synchronous. For ...
[ 4082.854242] INFO: task docker:111571 blocked for more than 120 seconds. [ 4082.855441] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 4082.856124] docker D 0000000000000000 0 111571 1 0x00000080 [ 4082.856127] ffff881c01527ab0 0000000000000086 ffff881c332f5080...
httpd:31276 blocked for more than 120 seconds. httpd进程阻塞了120s,查了下: This is a know bug. By default Linux uses up to 40% of the available memory for file system caching. 原理:linux会设置40%的可用内存用来做系统cache,当flush数据时这40%内存中的数据由于和IO同步问题导致超时(120s)简单...
Seen on http://multipath-tcp.org [624960.204059] INFO: task kworker/u4:0:3416 blocked for more than 120 seconds. [624960.204075] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [624960.204084] kworker/u4:0 D fff...