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pageserver/tests: make image_layer_rewrite write less data (#11525)

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## Problem

This test is slow to execute, particularly if you're on a slow
environment like vscode in a browser. Might have got much slower when we
switched to direct IO?

## Summary of changes

- Reduce the scale of the test by 10x, since there was nothing special
about the original size.
This commit is contained in:
John Spray
2025-04-10 18:03:22 +01:00
committed by GitHub
parent 52dee408dc
commit 9c37bfc90a
1 changed files with 9 additions and 9 deletions
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18
pageserver/src/tenant/storage_layer/image_layer.rs
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@@ -1192,7 +1192,7 @@ mod test {
// This key range contains several 0x8000 page stripes, only one of which belongs to shard zero
let input_start = Key::from_hex("000000067f00000001000000ae0000000000").unwrap();
let input_end = Key::from_hex("000000067f00000001000000ae0000020000").unwrap();
let input_end = Key::from_hex("000000067f00000001000000ae0000002000").unwrap();
let range = input_start..input_end;
// Build an image layer to filter
@@ -1235,7 +1235,7 @@ mod test {
let shard_identity = ShardIdentity::new(
ShardNumber(shard_number),
shard_count,
ShardStripeSize(0x8000),
ShardStripeSize(0x800),
)
.unwrap();
let harness = TenantHarness::create_custom(
@@ -1287,12 +1287,12 @@ mod test {
// This exact size and those below will need updating as/when the layer encoding changes, but
// should be deterministic for a given version of the format, as we used no randomness generating the input.
assert_eq!(original_size, 1597440);
assert_eq!(original_size, 122880);
match shard_number {
0 => {
// We should have written out just one stripe for our shard identity
assert_eq!(wrote_keys, 0x8000);
assert_eq!(wrote_keys, 0x800);
let replacement = replacement.unwrap();
// We should have dropped some of the data
@@ -1300,7 +1300,7 @@ mod test {
assert!(replacement.metadata().file_size > 0);
// Assert that we dropped ~3/4 of the data.
assert_eq!(replacement.metadata().file_size, 417792);
assert_eq!(replacement.metadata().file_size, 49152);
}
1 => {
// Shard 1 has no keys in our input range
@@ -1309,19 +1309,19 @@ mod test {
}
2 => {
// Shard 2 has one stripes in the input range
assert_eq!(wrote_keys, 0x8000);
assert_eq!(wrote_keys, 0x800);
let replacement = replacement.unwrap();
assert!(replacement.metadata().file_size < original_size);
assert!(replacement.metadata().file_size > 0);
assert_eq!(replacement.metadata().file_size, 417792);
assert_eq!(replacement.metadata().file_size, 49152);
}
3 => {
// Shard 3 has two stripes in the input range
assert_eq!(wrote_keys, 0x10000);
assert_eq!(wrote_keys, 0x1000);
let replacement = replacement.unwrap();
assert!(replacement.metadata().file_size < original_size);
assert!(replacement.metadata().file_size > 0);
assert_eq!(replacement.metadata().file_size, 811008);
assert_eq!(replacement.metadata().file_size, 73728);
}
_ => unreachable!(),
}