diff --git a/src/box/lua/slab.cc b/src/box/lua/slab.cc
index 131cd2344364ec3015639530627d7a12e1b7c07a..de50dba4fc7054e22b4dcd69d524687dc5a64557 100644
--- a/src/box/lua/slab.cc
+++ b/src/box/lua/slab.cc
@@ -36,6 +36,7 @@ extern "C" {
} /* extern "C" */
#include "box/tuple.h"
+#include "box/memtx_engine.h"
#include "small/small.h"
#include "small/quota.h"
#include "memory.h"
@@ -43,6 +44,12 @@ extern "C" {
/** A callback passed into salloc_stat() and invoked for every slab class. */
extern "C" {
+static int
+small_stats_noop_cb(const struct mempool_stats * /* stats */, void * /* cb_ctx */)
+{
+ return 0;
+}
+
static int
small_stats_lua_cb(const struct mempool_stats *stats, void *cb_ctx)
{
@@ -95,40 +102,96 @@ small_stats_lua_cb(const struct mempool_stats *stats, void *cb_ctx)
} /* extern "C" */
+static int
+lbox_slab_stats(struct lua_State *L)
+{
+ struct small_stats totals;
+ lua_newtable(L);
+ /*
+ * List all slabs used for tuples and slabs used for
+ * indexes, with their stats.
+ */
+ small_stats(&memtx_alloc, &totals, small_stats_lua_cb, L);
+ struct mempool_stats index_stats;
+ mempool_stats(&memtx_index_extent_pool, &index_stats);
+ small_stats_lua_cb(&index_stats, L);
+
+ return 1;
+}
+
+
static int
lbox_slab_info(struct lua_State *L)
{
struct small_stats totals;
+ /*
+ * List all slabs used for tuples and slabs used for
+ * indexes, with their stats.
+ */
lua_newtable(L);
- lua_pushstring(L, "slabs");
- lua_newtable(L);
- small_stats(&memtx_alloc, &totals, small_stats_lua_cb, L);
+ small_stats(&memtx_alloc, &totals, small_stats_noop_cb, L);
+ struct mempool_stats index_stats;
+ mempool_stats(&memtx_index_extent_pool, &index_stats);
+
+ struct slab_arena *tuple_arena = memtx_alloc.cache->arena;
+ struct quota *memtx_quota = tuple_arena->quota;
+ double ratio;
+ char ratio_buf[32];
+
+ ratio = 100 * ((double) totals.used
+ / ((double) totals.total + 0.0001));
+ snprintf(ratio_buf, sizeof(ratio_buf), "%0.1lf%%", ratio);
+
+ /*
+ * Fragmentation factor for tuples. Don't account indexes,
+ * even if they are fragmented, there is nothing people
+ * can do about it.
+ */
+ lua_pushstring(L, "items_used_ratio");
+ lua_pushstring(L, ratio_buf);
lua_settable(L, -3);
+ /** How much address space has been already touched */
+ lua_pushstring(L, "arena_size");
+ luaL_pushuint64(L, totals.total + index_stats.totals.total);
+ lua_settable(L, -3);
+ /**
+ * How much of this formatted address space is used for
+ * actual data.
+ */
lua_pushstring(L, "arena_used");
- luaL_pushuint64(L, totals.used);
+ luaL_pushuint64(L, totals.used + index_stats.totals.used);
lua_settable(L, -3);
- lua_pushstring(L, "arena_size");
- luaL_pushuint64(L, totals.total);
+ /*
+ * This is pretty much the same as
+ * box.cfg.slab_alloc_arena, but in bytes
+ */
+ lua_pushstring(L, "quota_size");
+ luaL_pushuint64(L, quota_total(memtx_quota));
lua_settable(L, -3);
- char value[32];
- double items_used_ratio = 100
- * ((double)totals.used)
- / ((double)memtx_alloc.cache->arena->prealloc + 0.0001);
- snprintf(value, sizeof(value), "%0.1lf%%", items_used_ratio);
- lua_pushstring(L, "items_used_ratio");
- lua_pushstring(L, value);
+ /*
+ * How much quota has been booked - reflects the total
+ * size of slabs in various slab caches.
+ */
+ lua_pushstring(L, "quota_used");
+ luaL_pushuint64(L, quota_used(memtx_quota));
lua_settable(L, -3);
- double arena_used_ratio = 100
- * ((double)memtx_alloc.cache->arena->used)
- / ((double)memtx_alloc.cache->arena->prealloc + 0.0001);
- snprintf(value, sizeof(value), "%0.1lf%%", arena_used_ratio);
+ /**
+ * This should be the same as arena_size/arena_used, however,
+ * don't trust totals in the most important monitoring
+ * factor, it's the quota that give you OOM error in the
+ * end of the day.
+ */
+ ratio = 100 * ((double) quota_used(memtx_quota) /
+ ((double) quota_total(memtx_quota) + 0.0001));
+ snprintf(ratio_buf, sizeof(ratio_buf), "%0.1lf%%", ratio);
+
lua_pushstring(L, "arena_used_ratio");
- lua_pushstring(L, value);
+ lua_pushstring(L, ratio_buf);
lua_settable(L, -3);
return 1;
@@ -144,7 +207,7 @@ lbox_runtime_info(struct lua_State *L)
lua_settable(L, -3);
lua_pushstring(L, "maxalloc");
- luaL_pushuint64(L, quota_get(runtime.quota));
+ luaL_pushuint64(L, quota_total(runtime.quota));
lua_settable(L, -3);
return 1;
@@ -169,6 +232,10 @@ box_lua_slab_init(struct lua_State *L)
lua_pushcfunction(L, lbox_slab_info);
lua_settable(L, -3);
+ lua_pushstring(L, "stats");
+ lua_pushcfunction(L, lbox_slab_stats);
+ lua_settable(L, -3);
+
lua_pushstring(L, "check");
lua_pushcfunction(L, lbox_slab_check);
lua_settable(L, -3);
diff --git a/src/box/memtx_engine.cc b/src/box/memtx_engine.cc
index a825a23654f75e209c088671c330b2a061c92e87..9480314bd391e1be9a7542fe463595621df95b74 100644
--- a/src/box/memtx_engine.cc
+++ b/src/box/memtx_engine.cc
@@ -48,12 +48,17 @@
#include "errinj.h"
#include "scoped_guard.h"
-/** For all memory used by all indexes. */
+/** For all memory used by all indexes.
+ * If you decide to use memtx_index_arena or
+ * memtx_index_slab_cache for anything other than
+ * memtx_index_extent_pool, make sure this is reflected in
+ * box.slab.info(), @sa lua/slab.cc
+ */
extern struct quota memtx_quota;
static bool memtx_index_arena_initialized = false;
static struct slab_arena memtx_index_arena;
-static struct slab_cache memtx_index_arena_slab_cache;
-static struct mempool memtx_index_extent_pool;
+static struct slab_cache memtx_index_slab_cache;
+struct mempool memtx_index_extent_pool;
/**
* To ensure proper statement-level rollback in case
* of out of memory conditions, we maintain a number
@@ -896,10 +901,10 @@ memtx_index_arena_init()
panic_syserror("failed to initialize index arena");
}
/* Creating slab cache */
- slab_cache_create(&memtx_index_arena_slab_cache, &memtx_index_arena);
+ slab_cache_create(&memtx_index_slab_cache, &memtx_index_arena);
/* Creating mempool */
mempool_create(&memtx_index_extent_pool,
- &memtx_index_arena_slab_cache,
+ &memtx_index_slab_cache,
MEMTX_EXTENT_SIZE);
/* Empty reserved list */
memtx_index_num_reserved_extents = 0;
diff --git a/src/box/memtx_engine.h b/src/box/memtx_engine.h
index 7d823881500ab3efa6418a7893a7f88bf1ff3d15..d8438eed640016d893705be9b822a00343bb66a7 100644
--- a/src/box/memtx_engine.h
+++ b/src/box/memtx_engine.h
@@ -37,6 +37,9 @@ enum memtx_recovery_state {
MEMTX_OK,
};
+/** Memtx extents pool, available to statistics. */
+extern struct mempool memtx_index_extent_pool;
+
struct MemtxEngine: public Engine {
MemtxEngine();
virtual Handler *open();
diff --git a/src/lib/small/quota.h b/src/lib/small/quota.h
index 70ceb8407f90f6c7710002de7406d3910e1d459b..da5f23fc51d3270d9538e00a040a22a10feb690d 100644
--- a/src/lib/small/quota.h
+++ b/src/lib/small/quota.h
@@ -77,7 +77,7 @@ quota_init(struct quota *quota, size_t total)
* Get current quota limit
*/
static inline size_t
-quota_get(const struct quota *quota)
+quota_total(const struct quota *quota)
{
return (quota->value >> 32) * QUOTA_UNIT_SIZE;
}
diff --git a/src/lib/small/slab_arena.c b/src/lib/small/slab_arena.c
index a233e538fc0bde3f6a7605c710b1f483c6c15874..59ca29846b6180752c6dc584d14288eecc4229e1 100644
--- a/src/lib/small/slab_arena.c
+++ b/src/lib/small/slab_arena.c
@@ -132,7 +132,7 @@ slab_arena_create(struct slab_arena *arena, struct quota *quota,
arena->quota = quota;
/** Prealloc can not be greater than the quota */
- prealloc = MIN(prealloc, quota_get(quota));
+ prealloc = MIN(prealloc, quota_total(quota));
/** Extremely large sizes can not be aligned properly */
prealloc = MIN(prealloc, SIZE_MAX - arena->slab_size);
/* Align prealloc around a fixed number of slabs. */
diff --git a/test/box/admin.result b/test/box/admin.result
index 18ae3194f84488a14a3866394d9d888acc5d6901..7a2e8cb1a9bb7a328582a40ac240b7a1305da304 100644
--- a/test/box/admin.result
+++ b/test/box/admin.result
@@ -118,24 +118,25 @@ end;
...
function test_box_slab_info()
local tmp = box.slab.info()
+ local tmp_slabs = box.slab.stats()
local cdata = {'arena_size', 'arena_used'}
local failed = {}
- if type(tmp.slabs) == 'table' then
- for name, tbl in ipairs(tmp.slabs) do
+ if type(tmp_slabs) == 'table' then
+ for name, tbl in ipairs(tmp_slabs) do
local bl, fld = test_slab(tbl)
if bl == true then
tmp[name] = nil
else
for k, v in ipairs(fld) do
- table.append(failed, v)
+ table.insert(failed, v)
end
end
end
else
- table.append(failed, 'box.slab.info().slabs is not ok')
+ table.insert(failed, 'box.slab.info().slabs is not ok')
end
- if #tmp.slabs == 0 then
- tmp.slabs = nil
+ if #tmp_slabs == 0 then
+ tmp_slabs = nil
end
for k, v in ipairs(cdata) do
if check_type(tmp[v], 'number') == false then
@@ -164,7 +165,7 @@ function test_fiber(tbl)
if type(tbl.backtrace) == 'table' and #tbl.backtrace > 0 then
tbl.backtrace = nil
else
- table.append(failed, 'backtrace')
+ table.insert(failed, 'backtrace')
end
if #tbl > 0 or #failed > 0 then
return false, failed
@@ -183,7 +184,7 @@ function test_box_fiber_info()
tmp[name] = nil
else
for k, v in ipairs(fld) do
- table.append(failed, v)
+ table.insert(failed, v)
end
end
end
diff --git a/test/box/admin.test.lua b/test/box/admin.test.lua
index 22e7b76088d8989b60345834a87102b93c6e951e..f96fb808b37290903a591a9c765cc61779183c5c 100644
--- a/test/box/admin.test.lua
+++ b/test/box/admin.test.lua
@@ -72,24 +72,25 @@ end;
function test_box_slab_info()
local tmp = box.slab.info()
+ local tmp_slabs = box.slab.stats()
local cdata = {'arena_size', 'arena_used'}
local failed = {}
- if type(tmp.slabs) == 'table' then
- for name, tbl in ipairs(tmp.slabs) do
+ if type(tmp_slabs) == 'table' then
+ for name, tbl in ipairs(tmp_slabs) do
local bl, fld = test_slab(tbl)
if bl == true then
tmp[name] = nil
else
for k, v in ipairs(fld) do
- table.append(failed, v)
+ table.insert(failed, v)
end
end
end
else
- table.append(failed, 'box.slab.info().slabs is not ok')
+ table.insert(failed, 'box.slab.info().slabs is not ok')
end
- if #tmp.slabs == 0 then
- tmp.slabs = nil
+ if #tmp_slabs == 0 then
+ tmp_slabs = nil
end
for k, v in ipairs(cdata) do
if check_type(tmp[v], 'number') == false then
@@ -117,7 +118,7 @@ function test_fiber(tbl)
if type(tbl.backtrace) == 'table' and #tbl.backtrace > 0 then
tbl.backtrace = nil
else
- table.append(failed, 'backtrace')
+ table.insert(failed, 'backtrace')
end
if #tbl > 0 or #failed > 0 then
return false, failed
@@ -135,7 +136,7 @@ function test_box_fiber_info()
tmp[name] = nil
else
for k, v in ipairs(fld) do
- table.append(failed, v)
+ table.insert(failed, v)
end
end
end
diff --git a/test/box/misc.result b/test/box/misc.result
index 23bd9464a229430e3239a6a39d1091818e96e1e2..8ff8f3bc9e42856884a49fbed898b9249ae78b28 100644
--- a/test/box/misc.result
+++ b/test/box/misc.result
@@ -190,7 +190,7 @@ box.slab.info().arena_size > 0;
---
- true
...
-string.match(tostring(box.slab.info().slabs), '^table:') ~= nil;
+string.match(tostring(box.slab.stats()), '^table:') ~= nil;
---
- true
...
@@ -204,11 +204,12 @@ end;
...
t;
---
-- - arena_used_ratio
+- - quota_used
+ - arena_used_ratio
- items_used_ratio
- - arena_used
- arena_size
- - slabs
+ - quota_size
+ - arena_used
...
box.runtime.info().used > 0;
---
diff --git a/test/box/misc.test.lua b/test/box/misc.test.lua
index 97602d056833a21f096b8379e8e86d96aff96bcc..daaf1f71774a7fcce067c455a0b1d50a97c1540d 100644
--- a/test/box/misc.test.lua
+++ b/test/box/misc.test.lua
@@ -71,7 +71,7 @@ t;
string.match(tostring(box.slab.info()), '^table:') ~= nil;
box.slab.info().arena_used >= 0;
box.slab.info().arena_size > 0;
-string.match(tostring(box.slab.info().slabs), '^table:') ~= nil;
+string.match(tostring(box.slab.stats()), '^table:') ~= nil;
t = {};
for k, v in pairs(box.slab.info()) do
table.insert(t, k)
diff --git a/test/unit/quota.cc b/test/unit/quota.cc
index f1cf7ae3de4b074bd95e468f8b27af03a7bd5293..31c6d0a2de15ef3ec20b0ed098b30d2b2b72eb84 100644
--- a/test/unit/quota.cc
+++ b/test/unit/quota.cc
@@ -83,7 +83,7 @@ main(int n, char **a)
long set_success_count = 0;
long use_success_count = 0;
for (size_t i = 0; i < THREAD_CNT; i++) {
- if (datum[i].last_lim_set == quota_get("a))
+ if (datum[i].last_lim_set == quota_total("a))
one_set_successed = true;
total_alloc += datum[i].use_change;
use_success_count += datum[i].use_change_success;
diff --git a/test/unit/slab_arena.c b/test/unit/slab_arena.c
index fe71bc713454bd8cd3041f79c2633d04dbb7b919..2f7a5b48d0f37a8f7b555d90049209caf010743e 100644
--- a/test/unit/slab_arena.c
+++ b/test/unit/slab_arena.c
@@ -11,7 +11,7 @@ slab_arena_print(struct slab_arena *arena)
{
printf("arena->prealloc = %zu\narena->maxalloc = %zu\n"
"arena->used = %zu\narena->slab_size = %u\n",
- arena->prealloc, quota_get(arena->quota),
+ arena->prealloc, quota_total(arena->quota),
arena->used, arena->slab_size);
}