From 234fe894d80a6ebc7e457bc86f2eea80d5ef01ea Mon Sep 17 00:00:00 2001 From: Ryujiro Shibuya Date: Wed, 25 Dec 2019 07:40:54 +0000 Subject: session svm: tracking segment memory usage 1. segment manager would attempt to balance the usages across the segments, when it allocate fifos 2. the memory presure level is determined per fifo-segment 3. updated unit test 4. updated cli output for segments Type: feature Signed-off-by: Ryujiro Shibuya Change-Id: I2923f3e0a43dd919196a0cb2cd55e098fde6cf66 --- src/svm/fifo_segment.h | 64 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 64 insertions(+) (limited to 'src/svm/fifo_segment.h') diff --git a/src/svm/fifo_segment.h b/src/svm/fifo_segment.h index 85548063972..4e950f6b4f0 100644 --- a/src/svm/fifo_segment.h +++ b/src/svm/fifo_segment.h @@ -39,6 +39,30 @@ typedef enum fifo_segment_flags_ FIFO_SEGMENT_F_MEM_LIMIT = 1 << 2, } fifo_segment_flags_t; +#define foreach_segment_mem_status \ +_(NO_PRESSURE, "No pressure") \ +_(LOW_PRESSURE, "Low pressure") \ +_(HIGH_PRESSURE, "High pressure") \ +_(NO_MEMORY, "No memory") + +typedef enum +{ +#define _(sym,str) MEMORY_PRESSURE_##sym, + foreach_segment_mem_status +#undef _ + MEMORY_N_PRESSURE, +} fifo_segment_mem_status_t; + +#if 0 +typedef enum fifo_segment_mem_status_ +{ + MEMORY_PRESSURE_NO_PRESSURE, + MEMORY_PRESSURE_LOW_PRESSURE, + MEMORY_PRESSURE_HIGH_PRESSURE, + MEMORY_PRESSURE_NO_MEMORY, +} fifo_segment_mem_status_t; +#endif + typedef struct { ssvm_private_t ssvm; /**< ssvm segment data */ @@ -146,6 +170,31 @@ svm_fifo_chunk_t *fsh_alloc_chunk (fifo_segment_header_t * fsh, void fsh_collect_chunks (fifo_segment_header_t * fsh, u32 slice_index, svm_fifo_chunk_t * cur); +/** + * Fifo segment has reached mem limit + * + * @param fsh fifo segment header + * @return 1 (if reached) or 0 (otherwise) + */ +u8 fsh_has_reached_mem_limit (fifo_segment_header_t * fsh); + +/** + * Fifo segment reset mem limit flag + * + * @param fs fifo segment + */ +void fsh_reset_mem_limit (fifo_segment_header_t * fsh); + +/** + * Fifo segment allocated size + * + * Returns fifo segment's allocated size + * + * @param fs fifo segment + * @return allocated size in bytes + */ +uword fifo_segment_size (fifo_segment_t * fs); + /** * Fifo segment estimate of number of free bytes * @@ -168,6 +217,16 @@ uword fifo_segment_free_bytes (fifo_segment_t * fs); */ void fifo_segment_update_free_bytes (fifo_segment_t * fs); +/** + * Fifo segment number of cached bytes + * + * Returns fifo segment's number of cached bytes. + * + * @param fs fifo segment + * @return cached bytes + */ +uword fifo_segment_cached_bytes (fifo_segment_t * fs); + /** * Number of bytes on chunk free lists * @@ -189,6 +248,11 @@ u32 fifo_segment_num_free_fifos (fifo_segment_t * fs); */ u32 fifo_segment_num_free_chunks (fifo_segment_t * fs, u32 size); +u8 fifo_segment_get_mem_usage (fifo_segment_t * fs); +fifo_segment_mem_status_t fifo_segment_determine_status + (fifo_segment_header_t * fsh, u8 usage); +fifo_segment_mem_status_t fifo_segment_get_mem_status (fifo_segment_t * fs); + void fifo_segment_main_init (fifo_segment_main_t * sm, u64 baseva, u32 timeout_in_seconds); -- cgit 1.2.3-korg