最近15分钟的对应磁盘的Disk read request avg waiting time (r_await)大于20ms或者 Disk write request avg waiting time (w_await) 大于20ms 解决方案 a、模板Linux block devices by Zabbix agent 中的提高宏{$VFS.DEV.READ.AWAIT.WARN} 和宏 {$VFS.DEV.WRITE.AWAIT.WARN}的值 默认是20。
告警主机:Zabbix server告警IP:127.0.0.1告警 时间:2020.05.04-09:49:22告警等级:Warning告警信息:sda: Disk read/write request response are too high (read > 20 ms for 15m or write > 20 ms for 15m)问题详情:sda: Disk read request avg waiting time (r_await):0 ms事件D:216595 回答 邀答 关...
It includes the request being serviced as well those waiting and is an instantaneous value, not an average. Avg. Disk sec / Transfer How fast is data being moved (in seconds)? This counter measures the average time of each data transfer, regardless of the number of bytes read or written....
avgqu-sz This column really represents concurrency at the block device scheduler. The pt-diskstats output shows concurrency for reads and writes separately: rd_cnc and wr_cnc. await This column is the average response time from the beginning to the end of a request to the block device, inc...
Alternatively, you can check your computer’s disk usage: On your keyboard, pressCtrl,Shift, andEscat the same time to open Task Manager. Then in the Processes tab, look at the % at the top of the Disk column. If it’s no longer at 100%, or has significantly dropped, then great!
time for a particular request. Or it could show non-zero values which are constantly dropping to zero and increasing which means that there are multiple requests which are waiting on IO to complete. If you experience WRITELOG waittypes for high durations for user transactions, then that would ...
surface of the platters Seek Time Average Seek Time = 0.0 ms 0.8 ms platter After the read/write arm has picked the right track, the time it takes for the requested sector (on that track) to come under the read/write head Rotational delay 0.0 ms 0.2 ms read/write arm platter Avg. se...
BE Read Response Time(ms) Back-end read response time. BE Write Response Time(ms) Back-end write response time. BE Avg Response Time(ms) Back-end average response time. BE % Reads Back-end read ratio (%). BE % Writes Back-end write ratio (%). Average I/O Latency(us) Average I...
BE Read Response Time(ms) Back-end read response time. BE Write Response Time(ms) Back-end write response time. BE Avg Response Time(ms) Back-end average response time. BE % Reads Back-end read ratio (%). BE % Writes Back-end write ratio (%). Average I/O Latency(us) Average I...
Splitting response time between reads and writes If you wish to accelerate your read request latency, you have little alternative other than increasing the number of disks that can be used for Exchange database read operations. Because the traffic to the database volumes is quite random, there ...