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Decryption is about 5 times slower in the 1.8.17 RC #6239

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manuroe opened this issue Jun 3, 2022 · 0 comments · Fixed by matrix-org/matrix-ios-sdk#1488
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Decryption is about 5 times slower in the 1.8.17 RC #6239

manuroe opened this issue Jun 3, 2022 · 0 comments · Fixed by matrix-org/matrix-ios-sdk#1488
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A-E2EE O-Frequent Affects or can be seen by most users regularly or impacts most users' first experience S-Major Severely degrades major functionality or product features, with no satisfactory workaround T-Defect Something isn't working: bugs, crashes, hangs and other reported problems X-Regression
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@manuroe
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manuroe commented Jun 3, 2022 •
edited

Steps to reproduce

This is visible for end users with the initial sync that takes ages. It is even not able to complete.

Logs show that decryptions take more than 30 ms on an iPhone 13 instead of 5/6 ms.

[MXRealmCryptoStore] performSessionOperationWithGroupSessionWithId after 33.821ms

Most of this time is spent in the realm I/O for the megolm key. The actual megolm decryption operation takes 0.1ms.

It is related to a realm performance issue that has been fixed in the very last release: https://github.com/realm/realm-swift/releases/tag/v10.27.0.

Outcome

Come back to 5/6ms decryption time.

Your phone model

No response

Operating system version

No response

Application version

1.8.17

Homeserver

No response

Will you send logs?

No
@manuroe manuroe added T-Defect Something isn't working: bugs, crashes, hangs and other reported problems A-E2EE X-Regression S-Major Severely degrades major functionality or product features, with no satisfactory workaround O-Frequent Affects or can be seen by most users regularly or impacts most users' first experience labels Jun 3, 2022
@RiotRobot RiotRobot added this to Incoming in Issue triage Jun 3, 2022
This was referenced Jun 3, 2022
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Issue triage automation moved this from Incoming to Closed Jun 3, 2022
@toshanmugaraj toshanmugaraj mentioned this issue Jun 9, 2022
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A-E2EE O-Frequent Affects or can be seen by most users regularly or impacts most users' first experience S-Major Severely degrades major functionality or product features, with no satisfactory workaround T-Defect Something isn't working: bugs, crashes, hangs and other reported problems X-Regression
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Bump realm to 10.27.0 to fix crypto performance issue matrix-org/matrix-ios-sdk
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@manuroe