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Blizzard Fast, Cloud-scale Block Storage for Cloud-oblivious Applications. August 6th, 2015. Posix应用使用刷盘 disk flush 来保证写的顺序,从而确保即使崩溃了仍然能够保证一致性,但是flush会有write barrier的问题,降低了并发性。 2 Nested striping,传统的会存在IOp convoy dilation问题,大的io会被文件系统拆分成小io,这些小io会从客户端发到一个远程disk,这些io都属于一个大的io操作,网络抖动,客户端服务器的调度异常都会使得请求间的间隔增加,而Bllizard使用Nested striping来解决这个问题,提高并发性,减少磁盘的热点。 3 Fast flushes with prefix write commits 异步刷数据 ,当收到flush请求时,立即返回给客户端,然后在后台异步地执行flush。 2 Flush epoch commits with fast acks. 一般像数据库和邮件服务器都有一个 page size 的配置...

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System Notes | sysnote.org Reviews
<META>
DESCRIPTION
Blizzard Fast, Cloud-scale Block Storage for Cloud-oblivious Applications. August 6th, 2015. Posix应用使用刷盘 disk flush 来保证写的顺序,从而确保即使崩溃了仍然能够保证一致性,但是flush会有write barrier的问题,降低了并发性。 2 Nested striping,传统的会存在IOp convoy dilation问题,大的io会被文件系统拆分成小io,这些小io会从客户端发到一个远程disk,这些io都属于一个大的io操作,网络抖动,客户端服务器的调度异常都会使得请求间的间隔增加,而Bllizard使用Nested striping来解决这个问题,提高并发性,减少磁盘的热点。 3 Fast flushes with prefix write commits 异步刷数据 ,当收到flush请求时,立即返回给客户端,然后在后台异步地执行flush。 2 Flush epoch commits with fast acks. 一般像数据库和邮件服务器都有一个 page size 的配置...
<META>
KEYWORDS
1 system notes
2 diary notebook
3 about me
4 wu dong
5 no comments
6 blizzard并行地把对虚拟盘的读写发到远程disk上,有几个特性
7 1 架构在clos网络上,全对分网络,读写每块disk都能达到全速;
8 使用异步写来提供性能,不过会有数据丢失的可能
9 design
10 实际上,blizzard就是使用最终一致性来提高性能
CONTENT
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system notes,diary notebook,about me,wu dong,no comments,blizzard并行地把对虚拟盘的读写发到远程disk上,有几个特性,1 架构在clos网络上,全对分网络,读写每块disk都能达到全速;,使用异步写来提供性能,不过会有数据丢失的可能,design,实际上,blizzard就是使用最终一致性来提高性能,blizzard的虚拟卷跨多个远程disk,能够利用并发来提高性能,并且其架构在cross rack网络上,能够保证端到端的全速流量,tags
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System Notes | sysnote.org Reviews

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Blizzard Fast, Cloud-scale Block Storage for Cloud-oblivious Applications. August 6th, 2015. Posix应用使用刷盘 disk flush 来保证写的顺序,从而确保即使崩溃了仍然能够保证一致性,但是flush会有write barrier的问题,降低了并发性。 2 Nested striping,传统的会存在IOp convoy dilation问题,大的io会被文件系统拆分成小io,这些小io会从客户端发到一个远程disk,这些io都属于一个大的io操作,网络抖动,客户端服务器的调度异常都会使得请求间的间隔增加,而Bllizard使用Nested striping来解决这个问题,提高并发性,减少磁盘的热点。 3 Fast flushes with prefix write commits 异步刷数据 ,当收到flush请求时,立即返回给客户端,然后在后台异步地执行flush。 2 Flush epoch commits with fast acks. 一般像数据库和邮件服务器都有一个 page size 的配置...

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Blizzard Fast, Cloud-scale Block Storage for Cloud-oblivious Applications. August 6th, 2015. Posix应用使用刷盘 disk flush 来保证写的顺序,从而确保即使崩溃了仍然能够保证一致性,但是flush会有write barrier的问题,降低了并发性。 2 Nested striping,传统的会存在IOp convoy dilation问题,大的io会被文件系统拆分成小io,这些小io会从客户端发到一个远程disk,这些io都属于一个大的io操作,网络抖动,客户端服务器的调度异常都会使得请求间的间隔增加,而Bllizard使用Nested striping来解决这个问题,提高并发性,减少磁盘的热点。 3 Fast flushes with prefix write commits 异步刷数据 ,当收到flush请求时,立即返回给客户端,然后在后台异步地执行flush。 2 Flush epoch commits with fast acks. 一般像数据库和邮件服务器都有一个 page size 的配置...

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