bissig vs zlib mongodb 2

千亿级数据迁移mongodb成本节省及性能优化实践 - InfoQ 写作平台

mongodb 对数据的压缩支持 snappy、zlib 算法,在以往线上真实的数据空间大小与真实磁盘空间消耗进行对比,可以得出以下结论: ① mongodb 默认的 snappy 压缩算法压缩比约为 2.2-4.5 倍. ② zlib 压缩算法压缩比约为 4.5-7.5 倍(本次迁移采用 zlib 高压缩算法)

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Performance Best Practices: Hardware and OS ... - …

03-03-2020·The snappy compression algorithm provides a balance between high document compression ratios (typically around 50%+, dependent on data types) with low CPU overhead, while the optional zStandard and zlib libraries will achieve higher compression, but incur additional CPU cycles as data is written to and read from disk. zStandard was introduced with the MongoDB 4.2 release and is …

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Large in memory collection scan very slow with ... - …

WT with zlib ("block_compressor=zlib") The only WT config that came close to the mmapv1 performance was zlib, and that was on the read from disk test. So, I decided to test on SSD rather than spinning media, the result was that everything got a bit faster, but the relative differences remained - WT was still significantly slower.

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mongo-driver · pkg.go.dev

01-06-2021·The MongoDB Go Driver supports wire protocol compression using Snappy, zLib, or zstd. To run tests with wire protocol compression, set MONGO_GO_DRIVER_COMPRESSOR to snappy, zlib, or zstd. For example: MONGO_GO_DRIVER_COMPRESSOR=snappy make. Ensure the --networkMessageCompressors flag on mongod or mongos includes zlib if testing zLib compression.

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Various Backup Compression Methods Using Mysqlpump ...

06-11-2020·Overview. Mysqlpump has three options to perform the compression backup. –compress: Used to compress all the information sent between client and server. –compression-algorithm: It was added in MySQL 8.0.18. Used to define the compression algorithm for all incoming connections to the server. (available options: zlib, zstd, uncompressed )

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Smaller and faster data compression with Zstandard ...

31-08-2016·Today, the reigning data compression standard is Deflate, the core algorithm inside Zip, gzip, and zlib [2]. For two decades, it has provided an impressive balance between speed and space, and, as a result, it is used in almost every modern electronic device (and, not coincidentally, used to transmit every byte of the very blog post you are reading).

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MongoDB 101: 5 Configuration Options That Impact ...

05-01-2021·This option allows you to compress the network traffic between your mongos, mongod, and even your mongo shell. There are currently three types of compression available, snappy, zlib, and zstd. Since MongoDB 3.6, compression has been enabled by default. In MongoDB …

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New Compression Options in MongoDB 3.0 | MongoDB …

30-04-2015·In MongoDB 3.0, WiredTiger provides three compression options for collections: No compression. Snappy (enabled by default) – very good compression, efficient use of resources. zlib (similar to gzip) – excellent compression, but more resource intensive. There are two compression options for indexes: No compression.

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Importing csv file into MongoDB with wiredtiger and zlib ...

30-11-2014·First off, at least for now, bzip2 is not one of the supported block compressors for MongoDB 2.8 (snappy and zlib are the only two supported). Secondly, if you have the 2.8.0 release candidate, then you don't need to build WiredTiger yourself, it is included with MongoDB. I wrote up 2 blog posts on how I compared the block compression of ...

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Various Backup Compression Methods Using Mysqlpump ...

06-11-2020·Overview. Mysqlpump has three options to perform the compression backup. –compress: Used to compress all the information sent between client and server. –compression-algorithm: It was added in MySQL 8.0.18. Used to define the compression algorithm for all incoming connections to the server. (available options: zlib, zstd, uncompressed )

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mongos — MongoDB Manual

zlib (Available starting in MongoDB 3.6) zstd (Available starting in MongoDB 4.2) In versions 3.6 and 4.0, mongod and mongos enable network compression by default with snappy as the compressor. Starting in version 4.2, mongod and mongos instances default to both snappy,zstd,zlib compressors, in …

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Mongo-CXX-Driver 3.2版本编译_大鼻孔的博客-CSDN博客

19-05-2018·MongoDB引用到了openssl和bson库,因此先要安装这2个库, 还需要用到cmake生成vs项目, 这里cmake的安装就直接忽略了, 有需要的同学可自行百度。 1. 下载perl, 点击打开链接 2.

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Evaluating Database Compression Methods - Percona …

09-03-2016·Vadim Tkachenko and I have been working with Fractal Tree® storage engines (Fractal Tree engines are available in Percona Server for MySQL and MongoDB as TokuDB and PerconaFT, respectively). While doing so, we’ve become interested evaluating database compression methods, to see how to make compression algorithms work even better than they do currently.

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Compression ratios for different zlib compression levels ...

16-11-2016·This zlib web page says, More typical zlib compression ratios are on the order of 2:1 to 5:1 in the context of maximum compression, but are there also compression ratios / ranges for the other compression factors as well? zlib compression. Share. Follow asked Nov 14 '16 at 18:24.

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MongoDB::MongoClient - A connection to a MongoDB …

Currently, zlib, zstd and snappy are supported. zlib_compression_level. An integer from -1 to 9 specifying the compression level to use when ... Prior to MongoDB 2.6, this option was ignored if the server was running without journaling. Starting with MongoDB 2.6, write operations will fail if this option is used when the server is running ...

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mongodb 压缩——3.0+支持zlib和snappy-阿里云开发者社区

16-11-2017·MongoDB wiredtiger storage engine provides two options for compression – snappy and zlib. There is essentially a tradeoff between the extent of compression and the amount of CPU load to decompress. ‘Zlib’ achieves a lot more compression and is correspondingly less performant. ‘Snappy’ aims for ‘aims for very high speeds and ...

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云测评-MongoDB存储引擎谁更强 - 云+社区 - 腾讯云

29-03-2019·WiredTiger:使用wiredTiger,MongoDB同时使用WiredTiger内部缓存和文件系统缓存。 通过文件系统缓存,MongoDB自动使用未被使用的所有空闲内存。 从3.4开始,WiredTiger内部缓存默认设置为以下两者中较大的一个: 50% of (RAM – 1 GB), or; 256 MB. 总结 MMAPV1 vs WiredTiger

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Unable to use mongodb+srv URI format · Issue #968 ...

26-03-2019·Description I'm unable to use the URI string format mongo+srv to connect to my MongoDB cluster. Environment Driver (1.4.2) and ext-mongodb (1.5.3) are latest versions available. PHP is a Docker container, starting from the official Alpin...

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mongodb - Mongo Collection `Size` is *larger* than ...

storageSize is the sum of all extents for that data, excluding indexes.. So that collection takes up 2 extents, they are ~2GB each, hence ~4GB. size includes indexes and I believe a couple of other things which inflate the number. Neither really represents the proper on-disk size. For disk size, db.stats() has a filesize field which is closer to what you want I think you're looking for.

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WiredTiger Storage Engine — MongoDB Manual

WiredTiger Storage Engine¶. Starting in MongoDB 3.2, the WiredTiger storage engine is the default storage engine. For existing deployments, if you do not specify the --storageEngine or the storage.engine setting, the version 3.2+ mongod instance can automatically determine the storage engine used to create the data files in the --dbpath or storage.dbPath.

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MongoDB v3.0 Compression Benchmarks | Acme …

09-02-2015·MongoDB v3.0 Compression Benchmarks. In my last two blogs, I compared the indexed insertion performance of the various MongoDB v3.0 storage engines. It was interesting to see how they stacked up against each other, especially looking at the performance variability in each. Based on those results I expect the WiredTiger and Tokutek developers to ...

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【数据库评测报告】MyRocks VS MySQL57 - 云+社区 - 腾讯云

06-07-2017·样本配置:57开启zlib压缩(压缩级别为最严格的第9级,relog刷盘参数设置为0)、rocks开启zlib压缩(key_block_size设置为4k)、rocks开启zlib压缩(key_block_size设置为16k ... 数据库评测报告第二期:MongoDB-3.2.

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Reducing MongoDB database file size - Stack Overflow

03-06-2010·I've got a MongoDB database that was once large (>3GB). Since then, documents have been deleted and I was expecting the size of the database files to decrease accordingly. But since MongoDB keeps

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Glossary — MongoDB Manual

To help identify slow queries with the same query shape, starting in MongoDB 4.2, each query shape is associated with a queryHash. ... zlib A data compression library that provides higher compression rates at the cost of more CPU, compared to MongoDB's use of snappy.

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nosql - Unstable insert rate in MongoDB - Stack Overflow

16-01-2019·I am running instance in the cloud with 8 cores, 16Gb RAM, 150Gb HDD, Ubuntu 18.04, MongoDB 4.0 official docker image. On the same instance run 2 workers that generate 10 000 records per second each and insert_many them into MongoDB 100 records per chunk. Each record is split between 2 collections cases and docs, docs uses zlib compression.

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MongoDuplicateKeyException E11000 duplicate key …

28-06-2018·Description Using MongoDB\BSON\ObjectId causes collisions Test case: I'm running multiple crons on 1 host at the same time which will collide on {_id} when inserting. Environment software version debian 9.4 php 7.2.6 ext-mongodb 1.5.0 li...

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