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[NAS] time machine 备份速度优化技巧求助: 备份到 pve 里的群晖 nas

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求立竿见影的优化技巧

big sur macos ( 5g wifi )------nas by 群晖 DSM 7.2.2-72806 in pve 8.2.4 guest ( pve host 单口千兆网络,桥接网络,guest vm virtio 网卡, 蜗牛 A ,直通 4 盘位 raid6 )

对于千兆网卡,128MB 是最大速度。 但是备份的时候速度基本上大文件是这么个速度~8.46 MB/s ( time machines log 里显示),在 activity monitor 看发送最大是 13MB 左右。 因为是备份负载,对于小文件多的情况下,速度 1MB/s 左右,可以理解。对于大文件,如果纯粹很大文件,达到 90-100MB 左右应该是理想速度(考虑到虚拟化开销等)。考虑实际上的真实文件分布,大文件传输达到 50MB 也就知足了。

但看我实际发现的大文件速度,平均才 8-10MB/s 。

以上我是在 macos 客户端如下条件下的性能数据。

sudo defaults write /Library/Preferences/SystemConfiguration/com.apple.smb.server SigningRequired -bool FALSE
sudo sysctl debug.lowpri_throttle_enabled=0

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