ldap perfomance

["Ghiurea, Isabella" <Isabella.Ghiurea@xxxxxxxxxxxxxx>]

Hello Gurus,

looking for an answer to  the following performance behavior

 my env: 389-ds-base-1.3.5.15-1.fc24.x86_64 in multimaster fractional replication

running rsearch for 5 min with 1 thread seeing spikes for a basic read  using index uid

And running with 10 threads  same search the  avg ms/ops  performance are much better with no major spike/burst

Any explanation much appreciate it

see bellow for 1 thread and the spike/burst

T 300 -t 1
rsearch: 1 threads launched.
T1 min=   0ms, max=   5ms, count = 54710
T1 min=   0ms, max=  42ms, count = 64930
T1 min=   0ms, max=   2ms, count = 65174
T1 min=   0ms, max=   2ms, count = 65110
T1 min=   0ms, max=  44ms, count = 64966
T1 min=   0ms, max=   1ms, count = 65101
T1 min=   0ms, max=  22ms, count = 65056
T1 min=   0ms, max=  32ms, count = 64981
T1 min=   0ms, max=   1ms, count = 65145
T1 min=   0ms, max=   1ms, count = 65223
T1 min=   0ms, max=  27ms, count = 65015
T1 min=   0ms, max=   1ms, count = 65182
T1 min=   0ms, max=   3ms, count = 65213
T1 min=   0ms, max=  23ms, count = 64760
T1 min=   0ms, max=   2ms, count = 64214
T1 min=   0ms, max=   3ms, count = 52279
T1 min=   0ms, max=  11ms, count = 64914
T1 min=   0ms, max=   1ms, count = 65118
T1 min=   0ms, max=   5ms, count = 64852
T1 min=   0ms, max=  91ms, count = 64180
T1 min=   0ms, max=   4ms, count = 64746
T1 min=   0ms, max=   1ms, count = 65080
T1 min=   0ms, max=  12ms, count = 65110
T1 min=   0ms, max= 702ms, count = 59243
T1 min=   0ms, max=   1ms, count = 65082
T1 min=   0ms, max=  89ms, count = 64331
T1 min=   0ms, max=  23ms, count = 64647
T1 min=   0ms, max=   5ms, count = 64818
T1 min=   0ms, max=  55ms, count = 64374
T1 min=   0ms, max=   8ms, count = 64713

T1 min=   0ms, max=   8ms, count = 64713
300 sec >= 300
Final Average rate: 6394.22/sec = 0.1564msec/op, total: 64713

 And final avg rate for 10 threads, no significant spike/burst  for this num of threads

20180905 14:07:23 - Rate: 16962.10/thr (16962.10/sec = 0.0590ms/op), total:169621 (10 thr)
300 sec >= 300
Final Average rate: 17420.40/sec = 0.0574msec/op, total:169621

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