However, sda, being the root, is mounted at / there are files in sdb and sdc that are written but I don't care about them. iotop -o -a yields Total DISK READ: 1314.41 K/s | Total DISK WRITE: 3.58 M/s TID PRIO USER DISK READ DISK WRITE SWAPIN IO> COMMAND 13266 be/4 roo...
I noticed that the IOWait is unusually high even though the processes is barely using any CPU. top - 01:44:39 up 1 day, 21:13, 1 user, load average: 1.41, 1.09, 0.86 Tasks: 60 total, 1 running, 59 sleeping, 0 stopped, 0 zombie Cpu0 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0...
nr_iowait_cpu+0x22/0x30 <<EOE>> <IRQ> [<ffffffff810a8287>] ? update_ts_time_stats+0x67/0xa0 [<ffffffff8109dd08>] ? sched_clock_cpu+0xb8/0x110 [<ffffffff810a82ed>] ? tick_nohz_stop_idle+0x2d/0x50 [<ffffffff810a83eb>] ? tick_check_idle+0xdb/0xe0 [<ffffffff81076edc>...
IO 等待或者iowait,wait,wa,%iowait,或者wait%通常可以通过 Linux 系统监控工具查看。例如命令行工具top、sar、atop等。 就其本身而言,它是众多性能统计数据之一,可让我们深入了解 Linux 系统性能。当单核 CPU 负载峰值为 60 到 80 时。 I/O 等待会导致页面加载缓慢、超时和间歇性中断。IO 等待是 CPU 或多...
false isFtraceAvailable: yes isMdfEtwAvailable: false isCSwitchAvailable: yes isGpuBusynessAvailable: yes isGpuBusynessDetailsAvailable: yes isGpuWaitAvailable: yes isFunctionTracingAvailable: yes isIowaitTracingAvailable: yes isVSyncAvailable: yes isSEPDriverAvailable: true platformType: 97 C...