Reduce leveldb cache sizes and worker stacks, increase number of workers

src/database/database.cpp

@@ -141,11 +141,11 @@ auto Database::Open(IFileGatherer& gatherer,
           [&]() -> cpp::result<Database*, DatabaseError> {
             leveldb::DB* db;
             std::unique_ptr<leveldb::Cache> cache{
-                leveldb::NewLRUCache(24 * 1024)};
+                leveldb::NewLRUCache(4 * 1024)};
 
             leveldb::Options options;
             options.env = sEnv.env();
-            options.write_buffer_size = 48 * 1024;
+            options.write_buffer_size = 4 * 1024;
             options.max_file_size = 32;
             options.block_cache = cache.get();
             options.block_size = 512;

src/tasks/tasks.cpp

@@ -66,7 +66,7 @@ auto AllocateStack<Type::kAudioConverter>() -> cpp::span<StackType_t> {
 // an eye-wateringly large amount of stack.
 template <>
 auto AllocateStack<Type::kBackgroundWorker>() -> cpp::span<StackType_t> {
-  std::size_t size = 256 * 1024;
+  std::size_t size = 64 * 1024;
   return {static_cast<StackType_t*>(heap_caps_malloc(size, MALLOC_CAP_SPIRAM)),
           size};
 }
@@ -125,7 +125,7 @@ auto WorkerPool::Main(void* q) {
   }
 }
 
-static constexpr size_t kNumWorkers = 3;
+static constexpr size_t kNumWorkers = 4;
 static constexpr size_t kMaxPendingItems = 8;
 
 WorkerPool::WorkerPool()