Increase backoff

src/runner/worker.rs

@@ -162,7 +162,7 @@ impl<'a> Worker<'a> {
             } else {
                 // Backoff from calling the server again, to reduce load when we're spinning until
                 // the next experiment is ready.
-                std::thread::sleep(Duration::from_secs(rand::random_range(3..10)));
+                std::thread::sleep(Duration::from_secs(rand::random_range(60..120)));
                 // We're done if no more crates left.
                 return Ok(());
             };

src/utils/disk_usage.rs

@@ -13,8 +13,9 @@ impl DiskUsage {
             let available = stat.blocks_available();
             let total = stat.blocks();
             info!("{available} / {total} blocks used in {path:?}");
+
             Ok(Self {
-                usage: available as f32 / total as f32,
+                usage: 1.0 - available as f32 / total as f32,
             })
         }
         #[cfg(not(unix))]