Memcached Testing Evictions
Qingchen Dang
STAT pointer_size 64
STAT rusage_user 110.668826
STAT rusage_system 769.767632
STAT max_connections 1024
STAT curr_connections 2
STAT total_connections 8004
STAT rejected_connections 0
STAT connection_structures 402
STAT response_obj_oom 0
STAT response_obj_count 1
STAT response_obj_bytes 131072
STAT read_buf_count 16
STAT read_buf_bytes 262144
STAT read_buf_bytes_free 114688
STAT read_buf_oom 0
STAT reserved_fds 40
STAT cmd_get 72720000
STAT cmd_set 7280000
STAT cmd_flush 0
STAT get_hits 626512
STAT get_misses 72093488
STAT get_expired 0
STAT get_flushed 0
STAT delete_misses 0
STAT delete_hits 0
STAT incr_misses 0
STAT incr_hits 0
STAT decr_misses 0
STAT decr_hits 0
STAT bytes_read 1809568092
STAT bytes_written 459401348
STAT limit_maxbytes 2097152
STAT accepting_conns 1
STAT listen_disabled_num 0
STAT time_in_listen_disabled_us 0
STAT threads 8
STAT conn_yields 0
STAT hash_power_level 16
STAT hash_bytes 524288
STAT hash_is_expanding 0
STAT slab_reassign_rescues 0
STAT slab_reassign_chunk_rescues 0
STAT slab_reassign_evictions_nomem 0
STAT slab_reassign_inline_reclaim 0
STAT slab_reassign_busy_items 0
STAT slab_reassign_busy_deletes 0
STAT slab_reassign_running 0
STAT slabs_moved 0
STAT lru_crawler_running 0
STAT lru_crawler_starts 4
STAT lru_maintainer_juggles 101778
STAT malloc_fails 0
STAT bytes 94437
STAT curr_items 909
STAT total_items 7280000
STAT slab_global_page_pool 0
STAT expired_unfetched 0
STAT evicted_unfetched 0
STAT evicted_active 0
STAT evictions 0
STAT reclaimed 0
STAT crawler_reclaimed 0
STAT crawler_items_checked 2732
STAT lrutail_reflocked 12
STAT moves_to_cold 116840
STAT moves_to_warm 3185
STAT moves_within_lru 538
STAT direct_reclaims 0
STAT lru_bumps_dropped 0
Thanks!
QD
dormando
From the stats it looks like you're probably overwriting the same values
over and over (high total_items but low curr_items and no get_expired)
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Qingchen Dang
But I do have one more question, how to add print statements to memcached source code? When I use ‘make test’, printf works as usual. But in the actual run, it seems the print is re-bufferred to somewhere else which makes it very hard to debug. Is there a way to print to stdout?
Thank you very much!
QD
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> On Apr 28, 2021, at 10:33 PM, dormando <dorm...@rydia.net> wrote:
>
> How're you loading the data?
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dormando
I don't know what you're doing but I can say there's nothing buffering
prints. Maybe you're starting memcached as a daemon? Prints won't work in
that case.
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Qingchen Dang
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