diff options
Diffstat (limited to 'src/zmalloc.c')
| -rw-r--r-- | src/zmalloc.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/src/zmalloc.c b/src/zmalloc.c index fd8bb6938..e02267fc9 100644 --- a/src/zmalloc.c +++ b/src/zmalloc.c @@ -326,6 +326,7 @@ size_t zmalloc_get_rss(void) { #endif #if defined(USE_JEMALLOC) + int zmalloc_get_allocator_info(size_t *allocated, size_t *active, size_t *resident) { @@ -347,13 +348,44 @@ int zmalloc_get_allocator_info(size_t *allocated, je_mallctl("stats.allocated", allocated, &sz, NULL, 0); return 1; } + +void set_jemalloc_bg_thread(int enable) { + /* let jemalloc do purging asynchronously, required when there's no traffic + * after flushdb */ + char val = !!enable; + je_mallctl("background_thread", NULL, 0, &val, 1); +} + +int jemalloc_purge() { + /* return all unused (reserved) pages to the OS */ + char tmp[32]; + unsigned narenas = 0; + size_t sz = sizeof(unsigned); + if (!je_mallctl("arenas.narenas", &narenas, &sz, NULL, 0)) { + sprintf(tmp, "arena.%d.purge", narenas); + if (!je_mallctl(tmp, NULL, 0, NULL, 0)) + return 0; + } + return -1; +} + #else + int zmalloc_get_allocator_info(size_t *allocated, size_t *active, size_t *resident) { *allocated = *resident = *active = 0; return 1; } + +void set_jemalloc_bg_thread(int enable) { + ((void)(enable)); +} + +int jemalloc_purge() { + return 0; +} + #endif /* Get the sum of the specified field (converted form kb to bytes) in |