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您什么时候使用压缩？

  • 2014年2月28日
  • 8个答复
  • 2608次观看
r
UserLevel 2
徽章 +6
有人在使用压缩吗？如果是这样，对于哪些工作负载以及您的集群的经验如何？
该主题已关闭以供评论

8个答复

Shuguet
UserLevel 4
徽章 +20
我有一个客户在数据库中使用它的成功。
Dedup没有完成工作（他在NetApp上时也是如此）。
压缩帮助了事情，没有明显的性能影响。

西尔万。
Sylvain Huguet -2X Nutanix技术冠军2015-2016，法国Nutanix Connect Chapter Champion，法国VMUG首领，6倍VMware Vexpert 2011至2016
\nDedup wasn't getting the job done (the same was true when he was on NetApp).
\nCompression helped things out, with no noticeable performance impact.
\n
\nSylvain.","quoteUsername":"shuguet","translations":{"Common":{"like":"Like","unlike":"Unlike"},"Forum":{"Quote":"Quote","Share":"Share"}}}">
r
UserLevel 2
徽章 +6
这很有帮助，谢谢。哪些数据库？他们是多少？您看到什么样的空间节省？

据我所知，Dewupliction仅在第3.5.x号的热层上。因此，直到Nutanix发布第4.0号，我们不会通过使用重复数据删除来看到任何节省。
\n
\nAs far as I know, dedupliction is only on the hot tier in NOS 3.5.x. So we won't see any savings by employing deduplication until Nutanix releases NOS 4.0.","quoteUsername":"rsciaraffo","translations":{"Common":{"like":"Like","unlike":"Unlike"},"Forum":{"Quote":"Quote","Share":"Share"}}}">
Shuguet
UserLevel 4
徽章 +20
我记得，数据库是Oracle 11G，大小在200-400GB范围内。
我不知道节省空间，我必须与他们联系，但他们很高兴。

如果/当我有机会看到它们时，我会回到您身边。

西尔万。
Sylvain Huguet -2X Nutanix技术冠军2015-2016，法国Nutanix Connect Chapter Champion，法国VMUG首领，6倍VMware Vexpert 2011至2016
\nI don't know about the space savings, I'll have to check with them, but they were happy enough.
\n
\nI'll get back to you if\/when I get the chance to see them.
\n
\nSylvain.","quoteUsername":"shuguet","translations":{"Common":{"like":"Like","unlike":"Unlike"},"Forum":{"Quote":"Quote","Share":"Share"}}}">
C
徽章 +5
在Nutanix文档中，我们可以看到这样的幻灯片
使用DB的内联压缩真的很有用吗？

j
秩
徽章 +4
我不会在数据库中使用内联压缩。最多我会在很长的延迟时间内使用后过程压缩。非常适合您仅存储很长时间而不再写入内容的数据库的类型。
s
徽章 +3
你好，

已经运行了Nutanix已有几个月了，并已成功使用内联压缩为我们的SQL DB服务器。
我已经从一个非常有能力的NetApp环境中移动了大约15至1 TB Big VM，但我没有看到压缩的性能影响。我在SQL Server中使用页面压缩，并且我仍然能够在压缩评估中获得1.8：1。

我已经进行了有或没有压缩的经过广泛的测试，到目前为止，我没有看到内联压缩的负面影响。群集的一般负载仍然很低，因为我有一个8节点6060群集，我唯一关心的是当群集上的CPU负载增加时会发生什么。有待观察。
\n
\nhave been running Nutanix for a couple of months now and have successfully used inline compression for our SQL DB servers.
\nI have moved about fifteen 0.5 to 1 TB big VM's over from a very competent NetApp enviornment and I have seen no performance impact of compression. I use PAGE compression within SQL server and I have still been able to get 1.8 : 1 in compression ration.
\n
\nI have made extensive tests both with and without compression and I have seen no negative effect of the inline compression so far. General load of the cluster is still low as I have a 8 node 6060 cluster, my only concern is what happens when CPU load on the cluster increases. Remains to be seen.","quoteUsername":"SQLSOS","translations":{"Common":{"like":"Like","unlike":"Unlike"},"Forum":{"Quote":"Quote","Share":"Share"}}}">
s
徽章 +5
你好呀。

我一直在尝试理解压缩。查看nutanixbible，我可以阅读有关内联压缩的信息。
对随机I/O没有影响，有助于增加存储层利用率。通过减少数据复制和从磁盘读取大型或顺序的I/O性能。

但是，当看着，似乎随机I/OS的内联压缩会产生影响。首先，它需要在压缩之前进行依靠数据。因此，如果将任何块读成融合的集团，它将必须对所有内容进行解压缩。因此，我想这对于任何写作都是正确的，并且数据库记录的任何更改对吗？

在这种情况下，直列压缩只能用于垃圾数据库，其中一旦编写/从未读取？！是否有关于真实（并且没有）性能影响的比较基准？我不能对客户说“使用压缩，感觉不会更糟” ...
\n
\nI've been trying to understand compression. Looking on NutanixBible, I can read this about inline compression.
\nNo impact to random I\/O, helps increase storage tier utilization. Benefits large or sequential I\/O performance by reducing data to replicate and read from disk.
\n
\nHowever, when looking at the <\/oembed>, it seems that inline compression for random I\/Os has an impact. 1st of all, it needs to coalesc data before to compress. Therefore, in case of read of any chunk into the coalesced bloc, it will have to decompress all of it. So I guess this is true for any write, and any change in records of a database right ?
\n
\nIn that case, Inline compression should only be used for dump databases where data are written once\/never read ?! Are there any comparison benchmarks about real (and not feel) performance impact ? I can't say to a customer \"use compression, it doesn't feel worse\" ... 😉","quoteUsername":"Superkikim","translations":{"Common":{"like":"Like","unlike":"Unlike"},"Forum":{"Quote":"Quote","Share":"Share"}}}">
r
徽章 +2
你好，

任何人都可以发布有关压缩和重复数据删除的最新经验和/或建议吗？我们将在Nutanix（AOS 5.5）上设置第一个VMware VSphere环境，该环境将主要运行数据库工作负载（Oracle和MSSQL）和一些应用程序服务器。我已经阅读了很多有关此主题的帖子和Nutanix文档，但是似乎存在很多矛盾/分歧，所以我仍然对要去哪个方向感到困惑。谢谢。
\r\n
\r\nCan anyone please post your recent experiences and\/or recommendations regarding Compression and Deduplication? We're setting up our first VMware vSphere environment on Nutanix (AOS 5.5) that will run mainly database workloads (Oracle and MSSQL) and a few application servers. I've read quite a few postings and Nutanix documentations on this topic but there seems to be a lot of contradictions\/disagreements so I'm still confused as to which direction to go. Thank you.","quoteUsername":"rappy39nix","translations":{"Common":{"like":"Like","unlike":"Unlike"},"Forum":{"Quote":"Quote","Share":"Share"}}}">
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