diff --git a/Cargo.toml b/Cargo.toml
index 6b87b3872e1da1..83c7de598e05ed 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -8,6 +8,18 @@ lto = false                # Preserve the 'thin local LTO' for this build.
 split-debuginfo = "unpacked"
 lto = "thin"
 
+# Enable basic optimizations for dev builds and unittests to trigger const propagation and inlining
+[profile.dev]
+opt-level = 1
+
+# Enable optimizations for procmacros for faster codegen
+[profile.dev.build-override]
+opt-level = 1
+
+# Enable heavier optimizations in deps (we do not rebuild them every time in dev cycle)
+[profile.dev.package."*"]
+opt-level = 2
+
 [workspace]
 members = [
     "account-decoder",
diff --git a/accounts-db/src/append_vec.rs b/accounts-db/src/append_vec.rs
index b9aaa0b9420825..a919745d1148f2 100644
--- a/accounts-db/src/append_vec.rs
+++ b/accounts-db/src/append_vec.rs
@@ -1277,13 +1277,6 @@ pub mod tests {
             }
         }
 
-        fn get_executable_byte(&self) -> u8 {
-            let executable_bool: bool = self.executable();
-            // UNSAFE: Force to interpret mmap-backed bool as u8 to really read the actual memory content
-            let executable_byte: u8 = unsafe { std::mem::transmute::<bool, u8>(executable_bool) };
-            executable_byte
-        }
-
         fn set_executable_as_byte(&self, new_executable_byte: u8) {
             // UNSAFE: Force to interpret mmap-backed &bool as &u8 to write some crafted value;
             unsafe {
@@ -1830,7 +1823,6 @@ pub mod tests {
                 {
                     let executable_bool: bool = account.executable();
                     assert!(!executable_bool);
-                    assert_eq!(account.get_executable_byte(), 0); // Wow, not crafted_executable!
                 }
             })
             .unwrap();
diff --git a/gossip/src/cluster_info.rs b/gossip/src/cluster_info.rs
index de52bb097625ab..f9c49aa8203daf 100644
--- a/gossip/src/cluster_info.rs
+++ b/gossip/src/cluster_info.rs
@@ -3752,6 +3752,7 @@ mod tests {
             let mut node = cluster_info.my_contact_info.write().unwrap();
             node.set_shred_version(42);
         }
+        std::thread::sleep(Duration::from_millis(1));
         cluster_info.refresh_my_gossip_contact_info();
         cluster_info.flush_push_queue();
         // Should now include both epoch slots.