Why do queries in sphinx hang?

Question

linux

Good afternoon. It took a very long time to pass queries in sphinx :

[14:56:52.184] 0.002 sec 0.002 sec [all/0/rel 0 (0,1000) @b] [*] lalala
[14 14:57:02.208] 0.002 sec 0.002 sec [all/0/rel 0 (0,1000) @p] [*] lalala
[14 14:57:17.236] 0.000 sec 0.000 sec [all/0/rel 0 (0,1)] [table] lalala
[14 14:57:17.259] 0.000 sec 0.000 sec [all/0/rel 0 (0,1)] [table] lalala
[14:57:27.280] 0.000 sec 0.000 sec [all/0/rel 0 (0,20)] [table] lalala

Between these requests, a number of other requests still pass.
Those. the full log looks like this:

[14:56:52.184] 0.002 sec 0.002 sec [all/0/rel 0 (0,1000) @b] [*] lalala
другой запрос 
другой запрос 
другой запрос 
другой запрос 
[14 14:57:02.208] 0.002 sec 0.002 sec [all/0/rel 0 (0,1000) @p] [*] lalala
другой запрос 
другой запрос 
[14 14:57:17.236] 0.000 sec 0.000 sec [all/0/rel 0 (0,1)] [table] lalala
другой запрос 
другой запрос 
другой запрос 
[14 14:57:17.259] 0.000 sec 0.000 sec [all/0/rel 0 (0,1)] [table] lalala
другой запрос 
другой запрос 
другой запрос 
[14:57:27.280] 0.000 sec 0.000 sec [all/0/rel 0 (0,20)] [table] lalala
другой запрос 
другой запрос

Please tell me what could be the reason for such a delay and how to overcome it, thanks.
PS sometimes the same requests fly by quickly, and sometimes for a long time.

Answer 1

Sphinx answers 0.002 seconds then eats. Quickly it's not about him