refactor: refine conditional compilation for mem control on different…

… OSs (risingwavelabs#8504)

Co-authored-by: Bugen Zhao <i@bugenzhao.com>

src/compute/src/memory_management/memory_manager.rs

@@ -14,12 +14,15 @@
 
 use std::sync::atomic::AtomicU64;
 use std::sync::Arc;
+use std::time::Duration;
 
 use risingwave_batch::task::BatchManager;
+use risingwave_common::util::epoch::Epoch;
 use risingwave_stream::executor::monitor::StreamingMetrics;
 use risingwave_stream::task::LocalStreamManager;
 
-use super::policy::MemoryControlPolicy;
+use super::MemoryControlPolicy;
+use crate::memory_management::MemoryControlStats;
 
 /// The minimal memory requirement of computing tasks in megabytes.
 pub const MIN_COMPUTE_MEMORY_MB: usize = 512;
@@ -29,7 +32,6 @@ pub const SYSTEM_RESERVED_MEMORY_MB: usize = 512;
 
 /// When `enable_managed_cache` is set, compute node will launch a [`GlobalMemoryManager`] to limit
 /// the memory usage.
-#[cfg_attr(not(target_os = "linux"), expect(dead_code))]
 pub struct GlobalMemoryManager {
     /// All cached data before the watermark should be evicted.
     watermark_epoch: Arc<AtomicU64>,
@@ -74,28 +76,13 @@ impl GlobalMemoryManager {
         self.watermark_epoch.clone()
     }
 
-    // FIXME: remove such limitation after #7180
-    /// Jemalloc is not supported on Windows, because of tikv-jemalloc's own reasons.
-    /// See the comments for the macro `enable_jemalloc_on_linux!()`
-    #[cfg(not(target_os = "linux"))]
-    #[expect(clippy::unused_async)]
-    pub async fn run(self: Arc<Self>, _: Arc<BatchManager>, _: Arc<LocalStreamManager>) {}
-
-    /// Memory manager will get memory usage from batch and streaming, and do some actions.
-    /// 1. if batch exceeds, kill running query.
-    /// 2. if streaming exceeds, evict cache by watermark.
-    #[cfg(target_os = "linux")]
+    /// Memory manager will get memory usage statistics from batch and streaming and perform memory
+    /// control accordingly.
     pub async fn run(
         self: Arc<Self>,
         batch_manager: Arc<BatchManager>,
         stream_manager: Arc<LocalStreamManager>,
     ) {
-        use std::time::Duration;
-
-        use risingwave_common::util::epoch::Epoch;
-
-        use crate::memory_management::policy::MemoryControlStats;
-
         let mut tick_interval =
             tokio::time::interval(Duration::from_millis(self.barrier_interval_ms as u64));
         let mut memory_control_stats = MemoryControlStats {

src/compute/src/memory_management/mod.rs

@@ -13,4 +13,98 @@
 // limitations under the License.
 
 pub mod memory_manager;
+#[cfg(target_os = "linux")]
 pub mod policy;
+
+use std::sync::atomic::AtomicU64;
+use std::sync::Arc;
+
+use risingwave_batch::task::BatchManager;
+use risingwave_common::error::Result;
+use risingwave_stream::task::LocalStreamManager;
+
+use crate::ComputeNodeOpts;
+
+/// `MemoryControlStats` contains the necessary information for memory control, including both batch
+/// and streaming.
+#[derive(Default)]
+pub struct MemoryControlStats {
+    pub batch_memory_usage: usize,
+    pub streaming_memory_usage: usize,
+    pub jemalloc_allocated_mib: usize,
+    pub lru_watermark_step: u64,
+    pub lru_watermark_time_ms: u64,
+    pub lru_physical_now_ms: u64,
+}
+
+pub type MemoryControlPolicy = Box<dyn MemoryControl>;
+
+pub trait MemoryControl: Send + Sync {
+    fn apply(
+        &self,
+        total_compute_memory_bytes: usize,
+        barrier_interval_ms: u32,
+        prev_memory_stats: MemoryControlStats,
+        batch_manager: Arc<BatchManager>,
+        stream_manager: Arc<LocalStreamManager>,
+        watermark_epoch: Arc<AtomicU64>,
+    ) -> MemoryControlStats;
+
+    fn describe(&self, total_compute_memory_bytes: usize) -> String;
+}
+
+#[cfg(target_os = "linux")]
+pub fn memory_control_policy_from_config(opts: &ComputeNodeOpts) -> Result<MemoryControlPolicy> {
+    use anyhow::anyhow;
+
+    use self::policy::{FixedProportionPolicy, StreamingOnlyPolicy};
+
+    let input_policy = &opts.memory_control_policy;
+    if input_policy == FixedProportionPolicy::CONFIG_STR {
+        Ok(Box::new(FixedProportionPolicy::new(
+            opts.streaming_memory_proportion,
+        )?))
+    } else if input_policy == StreamingOnlyPolicy::CONFIG_STR {
+        Ok(Box::new(StreamingOnlyPolicy))
+    } else {
+        let valid_values = [
+            FixedProportionPolicy::CONFIG_STR,
+            StreamingOnlyPolicy::CONFIG_STR,
+        ];
+        Err(anyhow!(format!(
+            "invalid memory control policy in configuration: {}, valid values: {:?}",
+            input_policy, valid_values,
+        ))
+        .into())
+    }
+}
+
+#[cfg(not(target_os = "linux"))]
+pub fn memory_control_policy_from_config(_opts: &ComputeNodeOpts) -> Result<MemoryControlPolicy> {
+    // We disable memory control on operating systems other than Linux now because jemalloc
+    // stats do not work well.
+    tracing::warn!("memory control is only enabled on Linux now");
+    Ok(Box::new(DummyPolicy))
+}
+
+/// `DummyPolicy` is used for operarting systems other than Linux. It does nothing as memory control
+/// is disabled on non-Linux OS.
+pub struct DummyPolicy;
+
+impl MemoryControl for DummyPolicy {
+    fn apply(
+        &self,
+        _total_compute_memory_bytes: usize,
+        _barrier_interval_ms: u32,
+        _prev_memory_stats: MemoryControlStats,
+        _batch_manager: Arc<BatchManager>,
+        _stream_manager: Arc<LocalStreamManager>,
+        _watermark_epoch: Arc<AtomicU64>,
+    ) -> MemoryControlStats {
+        MemoryControlStats::default()
+    }
+
+    fn describe(&self, _total_compute_memory_bytes: usize) -> String {
+        "DummyPolicy".to_string()
+    }
+}

src/compute/src/memory_management/policy.rs

@@ -22,55 +22,7 @@ use risingwave_common::error::Result;
 use risingwave_common::util::epoch::Epoch;
 use risingwave_stream::task::LocalStreamManager;
 
-use crate::ComputeNodeOpts;
-
-/// `MemoryControlStats` contains the necessary information for memory control, including both batch
-/// and streaming.
-pub struct MemoryControlStats {
-    pub batch_memory_usage: usize,
-    pub streaming_memory_usage: usize,
-    pub jemalloc_allocated_mib: usize,
-    pub lru_watermark_step: u64,
-    pub lru_watermark_time_ms: u64,
-    pub lru_physical_now_ms: u64,
-}
-
-pub type MemoryControlPolicy = Box<dyn MemoryControl>;
-
-pub trait MemoryControl: Send + Sync {
-    fn apply(
-        &self,
-        total_compute_memory_bytes: usize,
-        barrier_interval_ms: u32,
-        prev_memory_stats: MemoryControlStats,
-        batch_manager: Arc<BatchManager>,
-        stream_manager: Arc<LocalStreamManager>,
-        watermark_epoch: Arc<AtomicU64>,
-    ) -> MemoryControlStats;
-
-    fn describe(&self, total_compute_memory_bytes: usize) -> String;
-}
-
-pub fn memory_control_policy_from_config(opts: &ComputeNodeOpts) -> Result<MemoryControlPolicy> {
-    let input_policy = &opts.memory_control_policy;
-    if input_policy == FixedProportionPolicy::CONFIG_STR {
-        Ok(Box::new(FixedProportionPolicy::new(
-            opts.streaming_memory_proportion,
-        )?))
-    } else if input_policy == StreamingOnlyPolicy::CONFIG_STR {
-        Ok(Box::new(StreamingOnlyPolicy {}))
-    } else {
-        let valid_values = [
-            FixedProportionPolicy::CONFIG_STR,
-            StreamingOnlyPolicy::CONFIG_STR,
-        ];
-        Err(anyhow!(format!(
-            "invalid memory control policy in configuration: {}, valid values: {:?}",
-            input_policy, valid_values,
-        ))
-        .into())
-    }
-}
+use super::{MemoryControl, MemoryControlStats};
 
 /// `FixedProportionPolicy` performs memory control by limiting the memory usage of both batch and
 /// streaming to a fixed proportion.
@@ -83,7 +35,7 @@ pub struct FixedProportionPolicy {
 
 impl FixedProportionPolicy {
     const BATCH_KILL_QUERY_THRESHOLD: f64 = 0.8;
-    const CONFIG_STR: &str = "streaming-batch";
+    pub const CONFIG_STR: &str = "streaming-batch";
     const STREAM_EVICTION_THRESHOLD_AGGRESSIVE: f64 = 0.9;
     const STREAM_EVICTION_THRESHOLD_GRACEFUL: f64 = 0.7;
 
@@ -172,10 +124,10 @@ impl MemoryControl for FixedProportionPolicy {
 /// `FixedProportionPolicy` in that it calculates the memory usage based on jemalloc statistics,
 /// which actually contains system usage other than computing tasks. This is the default memory
 /// control policy.
-pub struct StreamingOnlyPolicy {}
+pub struct StreamingOnlyPolicy;
 
 impl StreamingOnlyPolicy {
-    const CONFIG_STR: &str = "streaming-only";
+    pub const CONFIG_STR: &str = "streaming-only";
     const STREAM_EVICTION_THRESHOLD_AGGRESSIVE: f64 = 0.9;
     const STREAM_EVICTION_THRESHOLD_GRACEFUL: f64 = 0.7;
 }
@@ -230,7 +182,6 @@ impl MemoryControl for StreamingOnlyPolicy {
     }
 }
 
-#[cfg(target_os = "linux")]
 fn advance_jemalloc_epoch(prev_jemalloc_allocated_mib: usize) -> usize {
     use tikv_jemalloc_ctl::{epoch as jemalloc_epoch, stats as jemalloc_stats};
 
@@ -246,11 +197,6 @@ fn advance_jemalloc_epoch(prev_jemalloc_allocated_mib: usize) -> usize {
     })
 }
 
-#[cfg(not(target_os = "linux"))]
-fn advance_jemalloc_epoch(_prev_jemalloc_allocated_mib: usize) -> usize {
-    0
-}
-
 fn calculate_lru_watermark(
     cur_stream_used_memory_bytes: usize,
     stream_memory_threshold_graceful: usize,

src/compute/src/server.rs

@@ -57,10 +57,10 @@ use risingwave_stream::task::{LocalStreamManager, StreamEnvironment};
 use tokio::sync::oneshot::Sender;
 use tokio::task::JoinHandle;
 
+use crate::memory_management::memory_control_policy_from_config;
 use crate::memory_management::memory_manager::{
     GlobalMemoryManager, MIN_COMPUTE_MEMORY_MB, SYSTEM_RESERVED_MEMORY_MB,
 };
-use crate::memory_management::policy::memory_control_policy_from_config;
 use crate::observer::observer_manager::ComputeObserverNode;
 use crate::rpc::service::config_service::ConfigServiceImpl;
 use crate::rpc::service::exchange_metrics::ExchangeServiceMetrics;