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Documentation: reference/reference_lua/box_slab/slab_info

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	You are running out of memory. All memory utilization indicators are high. Your memory is not fragmented, but there are few reserves left on each slab allocator level. You should consider increasing Tarantool's memory limit (``box.cfg.memtx_memory``).
	To sum up: your main out-of-memory indicator is ``quota_used_ratio``. However, there are lots of perfectly stable setups with a high ``quota_used_ratio``, so you only need to pay attention to it when both arena and item used ratio are also high.
	return
	``quota_size`` - memory limit for slab allocator (as configured in the :ref:`memtx_memory <cfg_storage-memtx_memory>` parameter, the default is 2^28 bytes = 268,435,456 bytes)
	``quota_used`` - used by slab allocator
	``items_size`` - allocated only for tuples
	``items_used`` - used only for tuples
	``arena_size`` - allocated for both tuples and indexes
	``arena_used`` - used for both tuples and indexes
	``items_used_ratio`` = ``items_used`` / ``items_size``
	``quota_used_ratio`` = ``quota_used`` / ``quota_size``
	``arena_used_ratio`` = ``arena_used`` / ``arena_size``
	rtype
	table
	Example:
	tarantool> box.slab.info() --- - items_size: 228128 items_used_ratio: 1.8% quota_size: 1073741824 quota_used_ratio: 0.8% arena_used_ratio: 43.2% items_used: 4208 quota_used: 8388608 arena_size: 2325176 arena_used: 1003632 ... tarantool> box.slab.info().arena_used --- - 1003632 ...

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