slave create relay log quickly without events

MySQL version:Server version: 5.6.24-72.2-log Percona Server (GPL), Release 72.2, Revision 8d0f85b
OS:Linux 10_86_20_118 2.6.32-573.el6.x86_64 #1 SMP Thu Jul 23 15:44:03 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

The relay log:
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027917
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027918
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027919
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027920
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027921
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027922
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027923
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027924
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027925
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027926
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027927
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027928
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027929
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027930
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027931
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027932
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027933
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027934
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027935
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027936
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027937
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027938
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027939
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027940
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027941
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027942
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027943
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027944
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027945
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027946
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027947
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027948
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027949
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027950
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027951
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027952
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027953
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027954
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027955
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027956
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027957
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027958
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027959
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027960
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027961
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027962
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027963
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027964
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027965
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027966
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027967
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027968
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027969
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027970
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027971
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027972
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027973
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027974
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027975
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027976
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027977
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027978
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027979
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027980
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027981
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027982
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027983
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027984
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027985
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027986
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027987
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027988
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027989
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027990
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027991
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027992
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027993
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027994
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027995
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027996
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027997
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027998
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.027999
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028000
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028001
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028002
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028003
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028004
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028005
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028006
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028007
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028008
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028009
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028010
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028011
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028012
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028013
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028014
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028015
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028016
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028017
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028018
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028019
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028020
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028021
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028022
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028023
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028024
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028025
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028026
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028027
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028028
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028029
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028030
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028031
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028032
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028033
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028034
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028035
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028036
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028037
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028038
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028039
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028040
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028041
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028042
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028043
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028044
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028045
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028046
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028047
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028048
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028049
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028050
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028051
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028052
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028053
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028054
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028055
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028056
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028057
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028058
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028059
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028060
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028061
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028062
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028063
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028064
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028065
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028066
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028067
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028068
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028069
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028070
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028071
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028072
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028073
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028074
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028075
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028076
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028077
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028078
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028079
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028080
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028081
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028082
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028083
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028084
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028085
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028086
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028087
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028088
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028089
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028090
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028091
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028092
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028093
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028094
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028095
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028096
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028097
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028098
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028099
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028100
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028101
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028102
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028103
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028104
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028105
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028106
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028107
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028108
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028109
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028110
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028111
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028112
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028113
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028114
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028115
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028116
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028117
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028118
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028119
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028120
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028121
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028122
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028123
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028124
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028125
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028126
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028127
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028128
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028129
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028130
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028131
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028132
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028133
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028134
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028135
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028136
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028137
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028138
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028139
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028140
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028141
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028142
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028143
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028144
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028145
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028146
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028147
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028148
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028149
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028150
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028151
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028152
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028153
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028154
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028155
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028156
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028157
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028158
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028159
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028160
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028161
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028162
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028163
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028164
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028165
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028166
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028167
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028168
-rw-rw---- 1 mysql mysql 337 Jun 16 19:20 mysqld-relay-bin.028169

In one minute created 253 relay log,But relay log has no event.
[root@10_86_20_118_ my3307]# mysqlbinlog --base64-output=decode-rows -vv mysqld-relay-bin.028169
/*!50530 SET @@SESSION.PSEUDO_SLAVE_MODE=1*/;
/*!40019 SET @@session.max_insert_delayed_threads=0*/;
/*!50003 SET @OLD_COMPLETION_TYPE=@@COMPLETION_TYPE,COMPLETION_TYPE=0*/;
DELIMITER /*!*/;
# at 4
#160616 17:11:18 server id 102453307 end_log_pos 120 CRC32 0xf762a8f8 Start: binlog v 4, server v 5.6.24-72.2-log created 160616 17:11:18
# at 120
#700101 8:00:00 server id 201163306 end_log_pos 0 CRC32 0x3a3a9e12 Rotate to mysql-bin.000202 pos: 13875212
# at 167
#160616 17:15:11 server id 201163306 end_log_pos 0 CRC32 0x334d4755 Start: binlog v 4, server v 5.6.24-72.2-log created 160616 17:15:11
# at 283
#160616 17:11:18 server id 102453307 end_log_pos 337 CRC32 0x535a1133 Rotate to mysqld-relay-bin.028170 pos: 4
DELIMITER ;
# End of log file
ROLLBACK /* added by mysqlbinlog */;
/*!50003 SET COMPLETION_TYPE=@OLD_COMPLETION_TYPE*/;
/*!50530 SET @@SESSION.PSEUDO_SLAVE_MODE=0*/;

my.cnf AS:
[client]
default-character-set = utf8
[mysqld]
character-set-server = utf8
collation-server = utf8_bin
basedir = /usr
datadir = /home/my3307
port = 3307
socket = /home/my3307/mysql.sock
open_files_limit = 8192
log_error=alert.log
pid_file=mysqld.pid
transaction-isolation=READ-COMMITTED
interactive_timeout = 7200
wait_timeout = 7200
innodb-status-file
skip-name-resolve
max_allowed_packet = 64M
explicit_defaults_for_timestamp=true
thread_cache_size = 256
expire_logs_days = 14
innodb_buffer_pool_size = 10186971K
sort_buffer_size = 64M
join_buffer_size = 8M
innodb_file_io_threads = 4
innodb_thread_concurrency = 16
innodb_log_buffer_size = 16M
innodb_log_file_size = 300M
innodb_log_files_in_group = 3
innodb_max_dirty_pages_pct = 90
innodb_lock_wait_timeout = 120
innodb_file_per_table
innodb_rollback_on_timeout
innodb_open_files=4000
innodb_flush_log_at_trx_commit = 1
sync_binlog = 1
innodb_data_file_path = ibdata1:1000M;ibdata2:10M:autoextend
binlog_format = MIXED
tmp_table_size = 128M
back_log = 200
max_connections = 1000
log_bin = mysql-bin
log_slave_updates=1
binlog_cache_size = 1M
slow_query_log=1
slow_query_log_file= slow.log
long_query_time = 1
log-output=FILE
general-log=0
general_log_file=general.log
tmpdir=/home/my3307
sql-mode=NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION
sha256_password_private_key_path=mykey.pem
sha256_password_public_key_path=mykey.pub
server_id=102453307
performance-schema-instrument='%=ON'
[mysqldump]
quick
max_allowed_packet = 64M

The percona Server installed by RPMS.

The Slave created From the other Slave by cold backup.