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Add members to chats in a single sql transation (#3780)

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This esp. speeds up receive_imf a bit when we recreate the member list (recreate_member_list == true).

It's a preparation for https://github.com/deltachat/deltachat-core-rust/issues/3768, which will be a one-line-fix, but recreate the member list more often, so that we want to optimize this case a bit.

It also adds a benchmark for this case. It's not that easy to make the benchmark non-flaky, but by closing all other programs and locking the CPU to 1.5GHz it worked. It is consistently a few percent faster than ./without-optim:

```
Receive messages/Receive 100 Chat-Group-Member-{Added|Removed} messages                                                                            
                        time:   [52.257 ms 52.569 ms 52.941 ms]
                        change: [-3.5301% -2.6181% -1.6697%] (p = 0.00 < 0.05)
                        Performance has improved.
Found 7 outliers among 100 measurements (7.00%)
  4 (4.00%) high mild
  3 (3.00%) high severe
```
This commit is contained in:
Hocuri
2022-11-29 20:37:56 +01:00
committed by GitHub
parent f6a502a8e3
commit 6c4d919828
8 changed files with 127 additions and 57 deletions
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71
benches/receive_emails.rs
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@@ -38,11 +38,64 @@ Hello {i}",
context
}
/// Receive 100 emails that remove charlie@example.com and add
/// him back
async fn recv_groupmembership_emails(context: Context) -> Context {
for i in 0..50 {
let imf_raw = format!(
"Subject: Benchmark
Message-ID: Gr.OssSYnOFkhR.{i}@testrun.org
Date: Sat, 07 Dec 2019 19:00:27 +0000
To: alice@example.com, b@example.com, c@example.com, d@example.com, e@example.com, f@example.com
From: sender@testrun.org
Chat-Version: 1.0
Chat-Disposition-Notification-To: sender@testrun.org
Chat-User-Avatar: 0
Chat-Group-Member-Added: charlie@example.com
In-Reply-To: Gr.OssSYnOFkhR.{i_dec}@testrun.org
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8; format=flowed; delsp=no
Hello {i}",
i = i,
i_dec = i - 1,
);
receive_imf(&context, black_box(imf_raw.as_bytes()), false)
.await
.unwrap();
let imf_raw = format!(
"Subject: Benchmark
Message-ID: Gr.OssSYnOFkhR.{i}@testrun.org
Date: Sat, 07 Dec 2019 19:00:27 +0000
To: alice@example.com, b@example.com, c@example.com, d@example.com, e@example.com, f@example.com
From: sender@testrun.org
Chat-Version: 1.0
Chat-Disposition-Notification-To: sender@testrun.org
Chat-User-Avatar: 0
Chat-Group-Member-Removed: charlie@example.com
In-Reply-To: Gr.OssSYnOFkhR.{i_dec}@testrun.org
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8; format=flowed; delsp=no
Hello {i}",
i = i,
i_dec = i - 1,
);
receive_imf(&context, black_box(imf_raw.as_bytes()), false)
.await
.unwrap();
}
context
}
async fn create_context() -> Context {
let dir = tempdir().unwrap();
let dbfile = dir.path().join("db.sqlite");
let id = 100;
let context = Context::new(&dbfile, id, Events::new(), StockStrings::new())
let context = Context::new(dbfile.as_path(), id, Events::new(), StockStrings::new())
.await
.unwrap();
@@ -52,7 +105,7 @@ async fn create_context() -> Context {
if backup.exists() {
println!("Importing backup");
imex(&context, ImexMode::ImportBackup, &backup, None)
imex(&context, ImexMode::ImportBackup, backup.as_path(), None)
.await
.unwrap();
}
@@ -83,6 +136,20 @@ fn criterion_benchmark(c: &mut Criterion) {
}
});
});
group.bench_function(
"Receive 100 Chat-Group-Member-{Added|Removed} messages",
|b| {
let rt = tokio::runtime::Runtime::new().unwrap();
let context = rt.block_on(create_context());
b.to_async(&rt).iter(|| {
let ctx = context.clone();
async move {
recv_groupmembership_emails(black_box(ctx)).await;
}
});
},
);
group.finish();
}