在Linux系统中，查看进程的磁盘I/O活动可以通过多种工具和方法实现，以下是一些常用的方法：
使用 `iotop` 命令
iotop 是一个实时监控磁盘I/O的工具，类似于top，但专注于I/O性能。
安装 iotop
sudo apt-get install iotop # Ubuntu/Debian sudo yum install iotop # CentOS/RHEL
使用方法
启动iotop：
sudo iotop
输出解释
| PID | User | I/O | Command |
| 1 | root | 10% | init [4] (s=12345) |
| 1234 | user | 20% | python script.py |
PID: 进程ID。
User: 运行该进程的用户。
I/O: 当前进程的I/O使用率。
Command: 进程的命令行。
使用 `pidstat` 命令
pidstat 是sysstat 包中的一个工具，可以报告特定进程的统计信息，包括CPU、内存和I/O等。
安装 sysstat
sudo apt-get install sysstat # Ubuntu/Debian sudo yum install sysstat # CentOS/RHEL
使用方法
显示所有进程的磁盘I/O：
pidstat -d
输出解释
Linux 5.4.0-42-generic (hostname) xxxxx x86_64 (xx CPU) 09:25:27 AM UID PID kB_rd/s kB_wr/s IO kB_cc/s interrupt scontext 09:25:27 AM 0 1234 0.00 10.00 10.00 0.00 100 0 09:25:27 AM 0 5678 5.00 0.00 5.00 0.00 200 0
UID: 用户ID。
PID: 进程ID。
kB_rd/s: 每秒读取的KB数。
kB_wr/s: 每秒写入的KB数。
IO: I/O总和（读+写）。
kB_cc/s: 取消的I/O操作（通常为0）。
interrupt: 中断次数。
scontext: 上下文切换次数。
使用 `dstat` 命令
dstat 是一个灵活的资源统计工具，可以显示多个系统资源的使用情况，包括CPU、内存、网络和磁盘I/O。
安装 dstat
sudo apt-get install dstat # Ubuntu/Debian sudo yum install dstat # CentOS/RHEL
使用方法
显示磁盘I/O统计：
dstat -d --disk-util --disk-merged
输出解释
--total-cpu-usage ---last second--- usr sys idl wai stl| read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used free | read writ| used ...
read: I/O读操作速率。
writ: I/O写操作速率。
`atop`
atop是一个交互式的全系统监视器，可以显示CPU、内存和磁盘I/O等信息。
安装 atop
sudo apt-get install atop # Ubuntu/Debian sudo apt-get install atop # CentOS/RHEL
####使用方法
启动atop：
sudo atop
在界面中按t键，然后选择Dsk/Swp列来查看磁盘I/O。
####输出解释
Tasks: 99, Total runnable tasks: 1, Idle tasks: 98, CPU States: User: 1.0%, System: 0.1%, IOWAIT: 0.0%, IRQ: 0.1%, SOFTIRQ: 0.0%, Steal: 0.0%, Guest: 0.0%, Idle: 98.8% Global: tot_mem=2047M, avail_mem=1023M, task_mem=1024M, high_mem=1523M, low_mem=1023M, active_anon=1024M inact_anon=0M active_file=1024M inact_file=0M unevictable=0M writeback=0K buffered=0K dirty=0K write_bandwidth=0K, all_write_bandwidth=0K, all_cpu_total=1% KiB Mem : 2047 total, 1023 used 1024 available 1023 buffers 0 cache 0 swpFree 0 slabReclaimable 0 slabUnreclaimable 0 kernelStack 0 pageTables 0 bounce 0 writebackTmp 0 mappedFile 0 dirtyThreshold 0 pages_scanned 0 softThumb 0 fsnotify 0 bogusHugetlbks 0 hugetlbUnknown 0 hugetlbPages 0 hugetlbKbytes 0 anonHugePages 0 shmemHugePages 0 fileHugePages 0 hugetlbVfsCached0 0 hugetlbVfsDirty 0 hugetlbVfsClean 0 hugetlbVfsReserved 0 hugetlbVfsCommitted_AS 0 hugetlbVfsCommitted_MS 0 hugetlbVfsCommitted_VM 0 hugetlbVfsRSS 0 lockedPagesRatio 0 hlayer_reclaim_empty 0 hlayer_reclaim_fill 0 hlayer_pagecache_recall 0 hlayer_unused 0 hlayer_poison_LRU_list 0 hlayer_tmp_overdestination 0 hlayer_skip_pagecache 0 hlayer_skip_pagecache_list 0 hlayer_flush_anon 0 hlayer_flush_internal 0 hlayer_flush_external 0 KiB Swap: 2047 total 0 used 2047 available 2047 swapTotal 2047 swapUsed 2047 swapFree 2047 swapCached2Gz 2047 swapCached2GzFree 2047 swapCashewb 2047 swapCauseGrouping 2047 swapWritePeeks 2047 swapReadContents 2047 swapReadMetadata 2047 swapCommittedChunks 2047 swapCompactedChunks 2047 swapCompactedFailedChunks 2047 swapCompactedSuccessfulChunks 2047 swapDecommittedChunks 2047 swapDecommittedChunksDeferred 2047 swapDecommittedChunksCombined 2047 swapDecommittedChunksCompleted 2047 swapDecommittedChunksDelayed 2047 swapDecommittedChunksMerged 2047 swapDecommittedChunksNoMerged 2047 swapDecommittedRightNow 2047 swapDecommittedInProgress 2047 swapDecommittingSuccessfully 2047 swapDecommittingFailed 2047 swapDecommittingDeferred 2047 swapDecommittingCombined 2047 swapDecommittingCompleted 2047 swapDecommittingDelayed 2047 swapDecommittingMerged 2047 swapDecommittingNoMerged 2047 swapDecommittingMergedRepeatedly 2047 swapDecommittingNoSpaceLeft 2047 swapDecommittingNoMatchingPartner 2047 swapDecommittingNotReady 2047 swapDecommittingAlreadyInProgress 2047 swapDecommittingAlreadyCompleted 2047 swapDecommittingAlreadyFailed 2047 swapDecommittingAlreadyMerging 2047 swapDecommittingAlreadyNoMatchingPartner 2047 swapDecommittingAlreadyNoSpaceLeft 2047 swapDecommittingAlreadyNoMatchingPartnerRepeatedly 2047 swapDecommittingAlreadyNoSpaceLeftRepeatedly 2047 swapDecommittingAlreadyNoMatchingPartnerRepeatedly 2047 swapDecommittingAlreadyNoSpaceLeftRepeatedly 2047 swapDecommittingAlreadyNoMatchingPartnerRepeatedly 2047 swapDecommittingAlreadyNoMatchingPartnerRepeatedly 2047 swapDecommittingAlreadyNoMatchingPartnerRepeatedly 2047 swapDecommittingAlreadyNoMatchingPartnerRepeatedly 2047 swapDecommittingAlreadyNoMatchingPartnerRepeatedly 2047 swapDecommittingAlreadyNoMatchingPartnerRepeatedly 2047 swapDecommittingAlreadyNoMatchingPartnerRepeatedly 2047 swapDecommittingAlreadyNoMatchingPartnerRepeatedly 2047 swapDecommittingAlreadyNoMatchingPartnerRepeatedly 2047 swapDecommittingAlreadyNoMatchingPartnerRepeatedly 2047 swapDecommittingAlreadyNoMatchingPartnerRepeatedly 2047 swapDecommittingAlreadyNoMatchingPartnerRepeatedly 2047 swapDecommittingAlreadyNoMatchingPartnerRepeatedly ...
通过这些工具，你可以全面了解 Linux系统中各个进程的磁盘I/O活动，帮助诊断和优化系统性能问题。
到此，以上就是小编对于linux 查看进程磁盘io的问题就介绍到这了，希望介绍的几点解答对大家有用，有任何问题和不懂的，欢迎各位朋友在评论区讨论，给我留言。
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