From f5e94b2f47b45c7aebbe390b02abd1ff7b810981 Mon Sep 17 00:00:00 2001 From: Willy Tarreau Date: Sun, 2 Jan 2022 19:38:54 +0100 Subject: [PATCH] OPTIM: pools: reduce local pool cache size to 512kB Now that we support batched allocations/releases, it appears that we can reach the same performance on H2 with shared pools and 256kB thread-local cache as without shared pools, a fast allocator and 1MB thread-local cache. With 512kB we're up to 10% faster on highly multiplexed H2 than without the shared cache. This was tested on a 16-core ARM machine. Thus it's time to slightly reduce the per-thread memory cost, which may also improve the performance on machines with smaller L2 caches. It essentially reverts commit f587003fe ("MINOR: pools: double the local pool cache size to 1 MB"). --- include/haproxy/defaults.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/haproxy/defaults.h b/include/haproxy/defaults.h index baa9aff51a..8ea94e53a9 100644 --- a/include/haproxy/defaults.h +++ b/include/haproxy/defaults.h @@ -404,7 +404,7 @@ /* default per-thread pool cache size when enabled */ #ifndef CONFIG_HAP_POOL_CACHE_SIZE -#define CONFIG_HAP_POOL_CACHE_SIZE 1048576 +#define CONFIG_HAP_POOL_CACHE_SIZE 524288 #endif #ifndef CONFIG_HAP_POOL_CLUSTER_SIZE -- 2.47.3