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Akka.NET v1.4.27 Release Notes (#5304)
* added Akka.NET 1.4.27 release notes
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‎RELEASE_NOTES.md

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#### 1.4.27 September 29 2021 ####
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**Placeholder for nightlies**
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#### 1.4.27 October 11 2021 ####
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**Maintenance Release for Akka.NET 1.4**
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Akka.NET v1.4.27 is a small release that contains some _major_ performance improvements for Akka.Remote.
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**Performance Fixes**
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In [RemoteActorRefProvider address paring, caching and resolving improvements](https://github.com/akkadotnet/akka.net/pull/5273) Akka.NET contributor @Zetanova introduced some major changes that make the entire `ActorPath` class much more reusable and more parse-efficient.
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Our last major round of Akka.NET performance improvements in Akka.NET v1.4.25 produced the following:
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```
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OSVersion: Microsoft Windows NT 6.2.9200.0
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ProcessorCount: 16
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ClockSpeed: 0 MHZ
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Actor Count: 32
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Messages sent/received per client: 200000 (2e5)
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Is Server GC: True
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Thread count: 111
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Num clients, Total [msg], Msgs/sec, Total [ms]
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1, 200000, 130634, 1531.54
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5, 1000000, 246975, 4049.20
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10, 2000000, 244499, 8180.16
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15, 3000000, 244978, 12246.39
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20, 4000000, 245159, 16316.37
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25, 5000000, 243333, 20548.09
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30, 6000000, 241644, 24830.55
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```
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In Akka.NET v1.4.27 those numbers now look like:
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```
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OSVersion: Microsoft Windows NT 6.2.9200.
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ProcessorCount: 16
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ClockSpeed: 0 MHZ
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Actor Count: 32
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Messages sent/received per client: 200000 (2e5)
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Is Server GC: True
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Thread count: 111
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Num clients, Total [msg], Msgs/sec, Total [ms]
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1, 200000, 105043, 1904.29
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5, 1000000, 255494, 3914.73
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10, 2000000, 291843, 6853.30
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15, 3000000, 291291, 10299.75
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20, 4000000, 286513, 13961.68
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25, 5000000, 292569, 17090.64
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30, 6000000, 281492, 21315.35
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```
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To put these numbers in comparison, here's what Akka.NET's performance looked like as of v1.4.0:
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```
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Num clients (actors) Total [msg] Msgs/sec Total [ms]
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1 200000 69736 2868.60
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5 1000000 141243 7080.98
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10 2000000 136771 14623.27
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15 3000000 38190 78556.49
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20 4000000 32401 123454.60
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25 5000000 33341 149967.08
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30 6000000 126093 47584.92
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```
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We've made Akka.Remote consistently faster, more predictable, and reduced total memory consumption significantly in the process.
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You can [see the full set of changes introduced in Akka.NET v1.4.27 here](https://github.com/akkadotnet/akka.net/milestone/57?closed=1)
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| COMMITS | LOC+ | LOC- | AUTHOR |
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| --- | --- | --- | --- |
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| 3 | 89 | 8 | Aaron Stannard |
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| 1 | 856 | 519 | Andreas Dirnberger |
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| 1 | 3 | 4 | Vadym Artemchuk |
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| 1 | 261 | 233 | Gregorius Soedharmo |
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| 1 | 1 | 1 | dependabot[bot] |
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#### 1.4.26 September 28 2021 ####
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**Maintenance Release for Akka.NET 1.4**

‎src/common.props

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<PropertyGroup>
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<Copyright>Copyright © 2013-2021 Akka.NET Team</Copyright>
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<Authors>Akka.NET Team</Authors>
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<VersionPrefix>1.4.23</VersionPrefix>
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<VersionPrefix>1.4.27</VersionPrefix>
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<PackageIconUrl>https://getakka.net/images/akkalogo.png</PackageIconUrl>
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<PackageProjectUrl>https://github.com/akkadotnet/akka.net</PackageProjectUrl>
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<PackageLicenseUrl>https://github.com/akkadotnet/akka.net/blob/master/LICENSE</PackageLicenseUrl>
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<CopyLocalLockFileAssemblies>true</CopyLocalLockFileAssemblies>
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</PropertyGroup>
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<PropertyGroup>
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<PackageReleaseNotes>Placeholder for nightlies**</PackageReleaseNotes>
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<PackageReleaseNotes>Maintenance Release for Akka.NET 1.4**
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Akka.NET v1.4.27 is a small release that contains some _major_ performance improvements for Akka.Remote.
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Performance Fixes**
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In [RemoteActorRefProvider address paring, caching and resolving improvements](https://github.com/akkadotnet/akka.net/pull/5273) Akka.NET contributor @Zetanova introduced some major changes that make the entire `ActorPath` class much more reusable and more parse-efficient.
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Our last major round of Akka.NET performance improvements in Akka.NET v1.4.25 produced the following:
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```
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OSVersion: Microsoft Windows NT 6.2.9200.0
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ProcessorCount: 16
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ClockSpeed: 0 MHZ
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Actor Count: 32
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Messages sent/received per client: 200000 (2e5)
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Is Server GC: True
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Thread count: 111
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Num clients, Total [msg], Msgs/sec, Total [ms]
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1, 200000, 130634, 1531.54
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5, 1000000, 246975, 4049.20
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10, 2000000, 244499, 8180.16
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15, 3000000, 244978, 12246.39
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20, 4000000, 245159, 16316.37
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25, 5000000, 243333, 20548.09
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30, 6000000, 241644, 24830.55
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```
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In Akka.NET v1.4.27 those numbers now look like:
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```
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OSVersion: Microsoft Windows NT 6.2.9200.
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ProcessorCount: 16
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ClockSpeed: 0 MHZ
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Actor Count: 32
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Messages sent/received per client: 200000 (2e5)
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Is Server GC: True
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Thread count: 111
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Num clients, Total [msg], Msgs/sec, Total [ms]
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1, 200000, 105043, 1904.29
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5, 1000000, 255494, 3914.73
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10, 2000000, 291843, 6853.30
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15, 3000000, 291291, 10299.75
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20, 4000000, 286513, 13961.68
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25, 5000000, 292569, 17090.64
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30, 6000000, 281492, 21315.35
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```
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To put these numbers in comparison, here's what Akka.NET's performance looked like as of v1.4.0:
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```
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Num clients (actors) Total [msg] Msgs/sec Total [ms]
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1 200000 69736 2868.60
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5 1000000 141243 7080.98
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10 2000000 136771 14623.27
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15 3000000 38190 78556.49
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20 4000000 32401 123454.60
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25 5000000 33341 149967.08
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30 6000000 126093 47584.92
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```
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We've made Akka.Remote consistently faster, more predictable, and reduced total memory consumption significantly in the process.
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You can [see the full set of changes introduced in Akka.NET v1.4.27 here](https://github.com/akkadotnet/akka.net/milestone/57?closed=1)
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| COMMITS | LOC+ | LOC- | AUTHOR |
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| --- | --- | --- | --- |
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| 3 | 89 | 8 | Aaron Stannard |
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| 1 | 856 | 519 | Andreas Dirnberger |
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| 1 | 3 | 4 | Vadym Artemchuk |
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| 1 | 261 | 233 | Gregorius Soedharmo |
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| 1 | 1 | 1 | dependabot[bot] |</PackageReleaseNotes>
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</PropertyGroup>
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<!-- SourceLink support for all Akka.NET projects -->
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<ItemGroup>

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