ffmpeg HLS 切片这么耗硬盘 I/O 吗？

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这是一个创建于 1429 天前的主题，其中的信息可能已经有所发展或是发生改变。

搞了 3 台机器在切片，i/o 老是告警。（每台两个 ffmpeg 在切）

磁盘响应时间 https://prnt.sc/sl8yel https://prnt.sc/sl8yho https://prnt.sc/sl8yl0

磁盘响应时间（ iostat ） https://prnt.sc/sl8yqv https://prnt.sc/sl8yvp https://prnt.sc/sl8yzy

SSD 型号：三星 MZ7LN512

[Created at block.245]
  Unique ID: 3OOL.FBQqHFuJif1
  Parent ID: abAj.GPRb67Bwnc2
  SysFS ID: /class/block/sda
  SysFS BusID: 1:0:0:0
  SysFS Device Link: /devices/pci0000:00/0000:00:17.0/ata2/host1/target1:0:0/1:0:0:0
  Hardware Class: disk
  Model: "SAMSUNG MZ7LN512"
  Vendor: "SAMSUNG"
  Device: "MZ7LN512"
  Revision: "100Q"
  Serial ID: "S2MHxxxxxx"
  Driver: "ahci", "sd"
  Driver Modules: "ahci"
  Device File: /dev/sda
  Device Files: /dev/sda, /dev/disk/by-id/ata-SAMSUNG_MZ7LN512HMJP-00000_S2MHNB0J300937, /dev/disk/by-id/wwn-0x5002538d41d70d31, /dev/disk/by-path/pci-0000:00:17.0-ata-2.0
  Device Number: block 8:0-8:15
  BIOS id: 0x81
  Geometry (Logical): CHS 62260/255/63
  Size: 1000215216 sectors a 512 bytes
  Capacity: 476 GB (512110190592 bytes)
  Geometry (BIOS EDD): CHS 992277/16/63
  Size (BIOS EDD): 1000215216 sectors
  Geometry (BIOS Legacy): CHS 1023/255/63
  Config Status: cfg=new, avail=yes, need=no, active=unknown
  Attached to: #7 (SATA controller)

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