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GitHub : https://github.com/Cuju-ft/Cuju/
Slides : https://drive.google.com/file/d/1_HlPGwSRdlXj0CaJ-DUmfkTfzkhRN3ju/
名稱由來:蹴踘
希望 VM 在實體機掛掉時可以踢來踢去
FT 可以在突然發生硬體故障(例如Apocalypse WWDC 2017中拉掉插頭)的時候讓備份的虛擬機器即時接手
https://ictjournal.itri.org.tw/Content/Messagess/contents.aspx?MmmID=654304432061644411&MSID=710603501460736344
最佳完後已經可以達到平均被保護的 VM Latency 只有 10ms 或更低的效能。
對要寫入 NFS 的資料做 RAM cache,讓需要即時 response 的應用程式可以加速,加上 Quota control callback 避免 IO 過快導致的問題,在 fio 效能可以達到接近沒開 FT 的效能。
很多的應用程式需要 Web/Logic/DB 各一台server,單獨 FT 效能會很低,因此把多台 VM 一起作 FT 可以有效降低總回應時間。
但全部failover的時候重建會很慢,又另外實作了Partial failover 和 Dynamic resync 的功能加速重建和維持短停機時間。
COSCUP2019
系統軟體社群議程
IB201
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