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lib: resize key mempools

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Mempools are based off of a ring structure which allocates its elements
as a power of two. It also only exposes n-1 elements to the user. So
when we create a mempool with 2^n elements in it, we have to allocate a
ring with 2^n+1 entries. By decreasing the number of elements in these
key mempools by 1, we can save a decent amount of memory.

Change-Id: I942c9dd4cf59096969bc2559fb46fd2084a07f09
Signed-off-by: Seth Howell <seth.howell@intel.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/448875
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Darek Stojaczyk <dariusz.stojaczyk@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
This commit is contained in:
Seth Howell 2019-03-22 11:46:31 -07:00 committed by Jim Harris
parent 970a86fb06
commit 33f60621af
3 changed files with 5 additions and 5 deletions
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6
lib/bdev/bdev.c
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@ -58,10 +58,10 @@
int __itt_init_ittlib(const char *, __itt_group_id);
#endif
#define SPDK_BDEV_IO_POOL_SIZE (64 * 1024)
#define SPDK_BDEV_IO_POOL_SIZE (64 * 1024 - 1)
#define SPDK_BDEV_IO_CACHE_SIZE 256
#define BUF_SMALL_POOL_SIZE 8192
#define BUF_LARGE_POOL_SIZE 1024
#define BUF_SMALL_POOL_SIZE 8191
#define BUF_LARGE_POOL_SIZE 1023
#define NOMEM_THRESHOLD_COUNT 8
#define ZERO_BUFFER_SIZE 0x100000

2
lib/nvmf/rdma.c
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@ -2045,7 +2045,7 @@ spdk_nvmf_rdma_request_process(struct spdk_nvmf_rdma_transport *rtransport,
#define SPDK_NVMF_RDMA_DEFAULT_IN_CAPSULE_DATA_SIZE 4096
#define SPDK_NVMF_RDMA_DEFAULT_MAX_IO_SIZE 131072
#define SPDK_NVMF_RDMA_MIN_IO_BUFFER_SIZE (SPDK_NVMF_RDMA_DEFAULT_MAX_IO_SIZE / SPDK_NVMF_MAX_SGL_ENTRIES)
#define SPDK_NVMF_RDMA_DEFAULT_NUM_SHARED_BUFFERS 4096
#define SPDK_NVMF_RDMA_DEFAULT_NUM_SHARED_BUFFERS 4095
#define SPDK_NVMF_RDMA_DEFAULT_BUFFER_CACHE_SIZE 32
static void

2
lib/nvmf/tcp.c
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@ -2788,7 +2788,7 @@ spdk_nvmf_tcp_qpair_set_sq_size(struct spdk_nvmf_qpair *qpair)
#define SPDK_NVMF_TCP_DEFAULT_IN_CAPSULE_DATA_SIZE 4096
#define SPDK_NVMF_TCP_DEFAULT_MAX_IO_SIZE 131072
#define SPDK_NVMF_TCP_DEFAULT_IO_UNIT_SIZE 131072
#define SPDK_NVMF_TCP_DEFAULT_NUM_SHARED_BUFFERS 512
#define SPDK_NVMF_TCP_DEFAULT_NUM_SHARED_BUFFERS 511
#define SPDK_NVMF_TCP_DEFAULT_BUFFER_CACHE_SIZE 32
static void