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fix(flushall): Decommit memory after releasing tables. #2691

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merged 1 commit into from
Mar 5, 2024

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chakaz
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@chakaz chakaz commented Mar 5, 2024

In the fiber we used to call mi_heap_collect() when we're done deleting items. But since that fiber captures a vector of intrusive pointers to DbTables, it can't free all memory used by the tables themselves.

A local test shows that this fix helps almost entirely: when occupying a 5gb DB, FLUSHALL will reduce RSS by 4.7gb, leaving 300mb still used. A follow up MEMORY DECOMMIT will indeed remove these 300mb, but I'm still not sure why they are not released immediately. Still looking...

Addresses (1) of #2690

In the fiber we used to call `mi_heap_collect()` when we're done
deleting items. But since that fiber captures a `vector` of intrusive
pointers to `DbTable`s, it can't free all memory used by the tables
themselves.

A local test shows that this fix helps almost entirely: when occupying a
5gb DB, `FLUSHALL` will reduce RSS by 4.7gb, leaving 300mb still used. A
follow up `MEMORY DECOMMIT` *will* indeed remove these 300mb, but I'm
still not sure why they are not released immediately. Still looking...

Addresses (1) of #2690
@chakaz chakaz requested a review from adiholden March 5, 2024 13:26
@chakaz chakaz merged commit 35b0ab1 into main Mar 5, 2024
10 checks passed
@chakaz chakaz deleted the flushall-decommit branch March 5, 2024 13:45
szinn pushed a commit to szinn/k8s-homelab that referenced this pull request Apr 3, 2024
…nfly ( v1.15.1 → v1.16.0 ) (#3354)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
|
[docker.dragonflydb.io/dragonflydb/dragonfly](https://togithub.com/dragonflydb/dragonfly)
| minor | `v1.15.1` -> `v1.16.0` |

---

### Release Notes

<details>
<summary>dragonflydb/dragonfly
(docker.dragonflydb.io/dragonflydb/dragonfly)</summary>

###
[`v1.16.0`](https://togithub.com/dragonflydb/dragonfly/releases/tag/v1.16.0)

[Compare
Source](https://togithub.com/dragonflydb/dragonfly/compare/v1.15.1...v1.16.0)

##### Dragonfly v1.16.0

Our spring release. We are getting closer to 2.0 with some very exciting
features ahead. Stay tuned!

Some prominent changes include:

- Improved memory accounting of client connections
([#&#8203;2710](https://togithub.com/dragonflydb/dragonfly/issues/2710)
[#&#8203;2755](https://togithub.com/dragonflydb/dragonfly/issues/2755)
and
[#&#8203;2692](https://togithub.com/dragonflydb/dragonfly/issues/2692) )
- FT.AGGREGATE call
([#&#8203;2413](https://togithub.com/dragonflydb/dragonfly/issues/2413))
- Properly handle and replicate Memcache flags
([#&#8203;2787](https://togithub.com/dragonflydb/dragonfly/issues/2787)
[#&#8203;2807](https://togithub.com/dragonflydb/dragonfly/issues/2807))
- Intoduce BF.AGGREGATE BD.(M)ADD and BF.(M)EXISTS methods
([#&#8203;2801](https://togithub.com/dragonflydb/dragonfly/issues/2801)).
Note, that it does not work with snapshots and replication yet.
- Dragonfly builds natively on MacOS. We would love some help with
extending the release pipeline to create a proper macos binary.
- Following the requests from the Edge developers community, we added a
basic HTTP API support! Try running Dragonfly with:
`--expose_http_api` flag and then call `curl -X POST -d '["ping"]'
localhost:6379/api`. We will follow up with more extensive docs later
this month.
- Lots of stability fixes, especially around Sidekiq and BullMQ
workloads.

##### What's Changed

- chore: make usan asan optional and enable them on CI by
[@&#8203;kostasrim](https://togithub.com/kostasrim) in
[dragonflydb/dragonfly#2631
- fix: missing manual trigger for daily sanitizers by
[@&#8203;kostasrim](https://togithub.com/kostasrim) in
[dragonflydb/dragonfly#2682
- bug(tiering): fix overflow in page offset calculation and wrong hash
offset calculation by [@&#8203;theyueli](https://togithub.com/theyueli)
in
[dragonflydb/dragonfly#2683
- Chore: Fixed Docker Health Check by
[@&#8203;manojks1999](https://togithub.com/manojks1999) in
[dragonflydb/dragonfly#2659
- chore: Increase disk space in the coverage runs by
[@&#8203;romange](https://togithub.com/romange) in
[dragonflydb/dragonfly#2684
- fix(flushall): Decommit memory after releasing tables. by
[@&#8203;chakaz](https://togithub.com/chakaz) in
[dragonflydb/dragonfly#2691
- feat(server): Account for serializer's temporary buffer size by
[@&#8203;chakaz](https://togithub.com/chakaz) in
[dragonflydb/dragonfly#2689
- refactor: remove FULL-SYNC-CUT cmd
[#&#8203;2687](https://togithub.com/dragonflydb/dragonfly/issues/2687)
by [@&#8203;BorysTheDev](https://togithub.com/BorysTheDev) in
[dragonflydb/dragonfly#2688
- chore: add malloc-based stats and decommit by
[@&#8203;romange](https://togithub.com/romange) in
[dragonflydb/dragonfly#2692
- feat(cluster): automatic slot migration finalization
[#&#8203;2697](https://togithub.com/dragonflydb/dragonfly/issues/2697)
by [@&#8203;BorysTheDev](https://togithub.com/BorysTheDev) in
[dragonflydb/dragonfly#2698
- Basic FT.AGGREGATE by
[@&#8203;dranikpg](https://togithub.com/dranikpg) in
[dragonflydb/dragonfly#2413
- chore: little transaction cleanup by
[@&#8203;dranikpg](https://togithub.com/dranikpg) in
[dragonflydb/dragonfly#2608
- fix(channel store): add acquire/release pair in fast update path by
[@&#8203;dranikpg](https://togithub.com/dranikpg) in
[dragonflydb/dragonfly#2704
- chore: add ubuntu22 devcontainer by
[@&#8203;romange](https://togithub.com/romange) in
[dragonflydb/dragonfly#2700
- feat(cluster): Add `--cluster_id` flag by
[@&#8203;chakaz](https://togithub.com/chakaz) in
[dragonflydb/dragonfly#2695
- feat(server): Use mimalloc in SSL calls by
[@&#8203;chakaz](https://togithub.com/chakaz) in
[dragonflydb/dragonfly#2710
- chore: Pull helio with new BlockingCounter by
[@&#8203;dranikpg](https://togithub.com/dranikpg) in
[dragonflydb/dragonfly#2711
- chore(transaction): Simplify PollExecution by
[@&#8203;dranikpg](https://togithub.com/dranikpg) in
[dragonflydb/dragonfly#2712
- chore(transaction): Don't call GetLocalMask from blocking controller
by [@&#8203;dranikpg](https://togithub.com/dranikpg) in
[dragonflydb/dragonfly#2715
- chore: improve compatibility of EXPIRE functions with Redis by
[@&#8203;romange](https://togithub.com/romange) in
[dragonflydb/dragonfly#2696
- chore: disable flaky fuzzy migration test by
[@&#8203;kostasrim](https://togithub.com/kostasrim) in
[dragonflydb/dragonfly#2716
- chore: update sanitizers workflow by
[@&#8203;kostasrim](https://togithub.com/kostasrim) in
[dragonflydb/dragonfly#2686
- chore: Use c-ares for resolving hosts in `ProtocolClient` by
[@&#8203;chakaz](https://togithub.com/chakaz) in
[dragonflydb/dragonfly#2719
- Remove check-fail in ExpireIfNeeded and introduce DFLY LOAD by
[@&#8203;romange](https://togithub.com/romange) in
[dragonflydb/dragonfly#2699
- chore: Record cmd stat from invoke by
[@&#8203;dranikpg](https://togithub.com/dranikpg) in
[dragonflydb/dragonfly#2720
- fix(transaction): nullptr access on non transactional commands by
[@&#8203;kostasrim](https://togithub.com/kostasrim) in
[dragonflydb/dragonfly#2724
- fix(BgSave): async from sync by
[@&#8203;kostasrim](https://togithub.com/kostasrim) in
[dragonflydb/dragonfly#2702
- chore: remove core/fibers by
[@&#8203;romange](https://togithub.com/romange) in
[dragonflydb/dragonfly#2723
- fix(transaction): Replace with armed sync point by
[@&#8203;dranikpg](https://togithub.com/dranikpg) in
[dragonflydb/dragonfly#2708
- feat(json): Deserialize ReJSON format by
[@&#8203;chakaz](https://togithub.com/chakaz) in
[dragonflydb/dragonfly#2725
- feat: add flag masteruser by
[@&#8203;kostasrim](https://togithub.com/kostasrim) in
[dragonflydb/dragonfly#2693
- refactor: block list refactoring
[#&#8203;2580](https://togithub.com/dragonflydb/dragonfly/issues/2580)
by [@&#8203;BorysTheDev](https://togithub.com/BorysTheDev) in
[dragonflydb/dragonfly#2732
- chore: fix DeduceExecMode by
[@&#8203;dranikpg](https://togithub.com/dranikpg) in
[dragonflydb/dragonfly#2733
- fix(cluster): Reply with correct `\n` / `\r\n` from `CLUSTER` sub cmd
by [@&#8203;chakaz](https://togithub.com/chakaz) in
[dragonflydb/dragonfly#2731
- chore: Introduce fiber stack allocator by
[@&#8203;romange](https://togithub.com/romange) in
[dragonflydb/dragonfly#2730
- fix(cluster): Save replica ID per replica by
[@&#8203;chakaz](https://togithub.com/chakaz) in
[dragonflydb/dragonfly#2735
- fix(ssl): Proper cleanup by
[@&#8203;chakaz](https://togithub.com/chakaz) in
[dragonflydb/dragonfly#2742
- chore: add skeleton files for flat_dfs code by
[@&#8203;romange](https://togithub.com/romange) in
[dragonflydb/dragonfly#2738
- chore: better error reporting when connecting to tls with plain socket
by [@&#8203;romange](https://togithub.com/romange) in
[dragonflydb/dragonfly#2740
- chore: Support json paths without root selector by
[@&#8203;dranikpg](https://togithub.com/dranikpg) in
[dragonflydb/dragonfly#2747
- chore: journal cleanup by
[@&#8203;romange](https://togithub.com/romange) in
[dragonflydb/dragonfly#2749
- refactor: remove start-slot-migration cmd
[#&#8203;2727](https://togithub.com/dragonflydb/dragonfly/issues/2727)
by [@&#8203;BorysTheDev](https://togithub.com/BorysTheDev) in
[dragonflydb/dragonfly#2728
- feat(server): Add TLS usage to /metrics and `INFO MEMORY` by
[@&#8203;chakaz](https://togithub.com/chakaz) in
[dragonflydb/dragonfly#2755
- chore: preparations for adding flat json support by
[@&#8203;romange](https://togithub.com/romange) in
[dragonflydb/dragonfly#2752
- chore(transaction): Introduce RunCallback by
[@&#8203;dranikpg](https://togithub.com/dranikpg) in
[dragonflydb/dragonfly#2760
- feat(replication): Do not auto replicate different master by
[@&#8203;chakaz](https://togithub.com/chakaz) in
[dragonflydb/dragonfly#2753
- Improve Helm chart to be rendered locally and on machines where is not
the application target by [@&#8203;fafg](https://togithub.com/fafg) in
[dragonflydb/dragonfly#2706
- chore: preparation for basic http api by
[@&#8203;romange](https://togithub.com/romange) in
[dragonflydb/dragonfly#2764
- feat(server): Add metric for RDB save duration. by
[@&#8203;chakaz](https://togithub.com/chakaz) in
[dragonflydb/dragonfly#2768
- chore: fix flat_dfs read tests. by
[@&#8203;romange](https://togithub.com/romange) in
[dragonflydb/dragonfly#2772
- fix(ci): do not overwrite last_log_file among tests by
[@&#8203;kostasrim](https://togithub.com/kostasrim) in
[dragonflydb/dragonfly#2759
- feat(server): support cluster replication by
[@&#8203;adiholden](https://togithub.com/adiholden) in
[dragonflydb/dragonfly#2748
- fix: fiber preempts on read path and OnCbFinish() clears
fetched_items\_ by [@&#8203;kostasrim](https://togithub.com/kostasrim)
in
[dragonflydb/dragonfly#2763
- chore(ci): open last_log_file in append mode by
[@&#8203;kostasrim](https://togithub.com/kostasrim) in
[dragonflydb/dragonfly#2776
- doc(README): fix outdated expiry ranges description by
[@&#8203;enjoy-binbin](https://togithub.com/enjoy-binbin) in
[dragonflydb/dragonfly#2779
- Benchmark runner by
[@&#8203;adiholden](https://togithub.com/adiholden) in
[dragonflydb/dragonfly#2780
- chore(replication-tests): add cache_mode on test replication all by
[@&#8203;kostasrim](https://togithub.com/kostasrim) in
[dragonflydb/dragonfly#2685
- feat(tiering): DiskStorage by
[@&#8203;dranikpg](https://togithub.com/dranikpg) in
[dragonflydb/dragonfly#2770
- chore: add a boilerplate for bloom filter family by
[@&#8203;romange](https://togithub.com/romange) in
[dragonflydb/dragonfly#2782
- chore: introduce conversion routines between JsonType and FlatJson by
[@&#8203;romange](https://togithub.com/romange) in
[dragonflydb/dragonfly#2785
- chore: Fix memcached flags not updated by
[@&#8203;dranikpg](https://togithub.com/dranikpg) in
[dragonflydb/dragonfly#2787
- chore: remove duplicate code from dash and simplify by
[@&#8203;kostasrim](https://togithub.com/kostasrim) in
[dragonflydb/dragonfly#2765
- chore: disable test_cluster_slot_migration by
[@&#8203;kostasrim](https://togithub.com/kostasrim) in
[dragonflydb/dragonfly#2788
- fix: new\[] delete\[] missmatch in disk_storage by
[@&#8203;kostasrim](https://togithub.com/kostasrim) in
[dragonflydb/dragonfly#2792
- fix: sanitizers clang build and clean up some warnings by
[@&#8203;kostasrim](https://togithub.com/kostasrim) in
[dragonflydb/dragonfly#2793
- chore: add bloom filter class by
[@&#8203;romange](https://togithub.com/romange) in
[dragonflydb/dragonfly#2791
- chore: add SBF data structure by
[@&#8203;romange](https://togithub.com/romange) in
[dragonflydb/dragonfly#2795
- chore(tiering): Disable compilation for MacOs by
[@&#8203;dranikpg](https://togithub.com/dranikpg) in
[dragonflydb/dragonfly#2799
- chore: fix daily build by
[@&#8203;romange](https://togithub.com/romange) in
[dragonflydb/dragonfly#2798
- chore: expose SBF via compact_object by
[@&#8203;romange](https://togithub.com/romange) in
[dragonflydb/dragonfly#2797
- fix(ci): malloc trim on sanitizers workflow by
[@&#8203;kostasrim](https://togithub.com/kostasrim) in
[dragonflydb/dragonfly#2794
- fix(cluster): Don't miss updates in FLUSHSLOTS by
[@&#8203;chakaz](https://togithub.com/chakaz) in
[dragonflydb/dragonfly#2783
- feat: add bf.(m)add and bf.(m)exists commands by
[@&#8203;romange](https://togithub.com/romange) in
[dragonflydb/dragonfly#2801
- fix: SBF memory leaks by
[@&#8203;kostasrim](https://togithub.com/kostasrim) in
[dragonflydb/dragonfly#2803
- chore: refactor StringFamily::Set to use CmdArgParser by
[@&#8203;romange](https://togithub.com/romange) in
[dragonflydb/dragonfly#2800
- fix: propagate memcached flags to replica by
[@&#8203;romange](https://togithub.com/romange) in
[dragonflydb/dragonfly#2807
- DFLYMIGRATE ACK refactoring by
[@&#8203;BorysTheDev](https://togithub.com/BorysTheDev) in
[dragonflydb/dragonfly#2790
- feat: add master lsn and journal_executed dcheck in replica via ping
by [@&#8203;kostasrim](https://togithub.com/kostasrim) in
[dragonflydb/dragonfly#2778
- fix: correct json response for errors by
[@&#8203;romange](https://togithub.com/romange) in
[dragonflydb/dragonfly#2813
- chore: bloom test - cover corner cases by
[@&#8203;romange](https://togithub.com/romange) in
[dragonflydb/dragonfly#2806
- bug(server): do not write lsn opcode to journal by
[@&#8203;adiholden](https://togithub.com/adiholden) in
[dragonflydb/dragonfly#2814
- chore: Fix build by disabling the tests. by
[@&#8203;romange](https://togithub.com/romange) in
[dragonflydb/dragonfly#2821
- fix(replication): replication with multi shard sync enabled lagging by
[@&#8203;adiholden](https://togithub.com/adiholden) in
[dragonflydb/dragonfly#2823
- fix: io_uring/fibers bug in DnsResolve by
[@&#8203;romange](https://togithub.com/romange) in
[dragonflydb/dragonfly#2825

##### New Contributors

- [@&#8203;manojks1999](https://togithub.com/manojks1999) made their
first contribution in
[dragonflydb/dragonfly#2659
- [@&#8203;fafg](https://togithub.com/fafg) made their first
contribution in
[dragonflydb/dragonfly#2706
- [@&#8203;enjoy-binbin](https://togithub.com/enjoy-binbin) made their
first contribution in
[dragonflydb/dragonfly#2779

##### Huge thanks to all the contributors! ❤️

🇮🇱  🇺🇦

**Full Changelog**:
dragonflydb/dragonfly@v1.15.0...v1.16.0

</details>

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Co-authored-by: repo-jeeves[bot] <106431701+repo-jeeves[bot]@users.noreply.github.com>
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2 participants