I'm on Centos 7.2 and thought I'd try this to see how it works. Instead of nice output I got and error. Have I done something wrong?
[root@linux systemtap]# stap id_perf.stp ERROR: empty aggregate near identifier 'print' at id_perf.stp:68:5 Total run time of id was: 3 ms Number of zero-level cache transactions: 0 Time spent in level-0 sysdb transactions: 0 ms Time spent writing to LDB: 0 ms Number of LDAP searches: 0 Time spent waiting for LDAP: 0 ms LDAP searches breakdown: Number of user requests: 0 Time spent in user requests: 0
Number of group requests: 0 Time spent in group requests: 0
Number of initgroups requests: 0 Time spent in initgroups requests: 0
Unaccounted time: 3 ms sysdb transaction breakdown: The most expensive transaction breakdown, per transaction: WARNING: Number of errors: 1, skipped probes: 0 WARNING: /usr/bin/staprun exited with status: 1 Pass 5: run failed. [man error::pass5]
------ The most dangerous phrase in the language is, "We've always done it this way."
- Grace Hopper
On 26 November 2016 at 10:05, zfnoctis@gmail.com wrote:
Sorry for the delay, the holidays managed to take up more of my spare time than anticipated.
This was done on Fedora workstation 25. Overall sssd performance appears to be noticeably better than Ubuntu 16.04/16.10 and Fedora 24. Please let me know if I made any mistakes running these tests, or if I need to run additional tests.
############################################################ ######################################## This was my quick attempt at the USE method in order to rule out other causes of performance issues. ############################################################ ######################################## task: id <domain user>
vmstat, pidstat, and top/htop are showing high amounts of CPU time being spent in user-space. Looks to be sssd_be.
e.g. from pidstat 02:34:39 PM UID PID %usr %system %guest %CPU CPU Command 02:34:40 PM 0 12518 100.00 0.00 0.00 100.00 0 sssd_be
iostat is showing minimal I/O occurring, disks are mostly idle. Not seeing any errors or queuing.
nicstat shows network interfaces never go above 60% utilization. No network errors reported. No queuing.
free is not showing any serious memory pressure, no swapping is occurring.
Unsure how to measure interconnects between subsystems. May use perf/systemtap.
############################################################ ########################################
These runs were of id <domainuser> and each was of a different user so as to hopefully avoid caching. Each time there were warnings of missing unwind data, is there a set of packages I need to install to resolve this?
############################################################ ########################################
[root@fc25-vm systemtap]# stap id_perf.stp WARNING: Missing unwind data for a module, rerun with 'stap -d /usr/lib64/libtevent.so.0.9.30' Total run time of id was: 91098 ms Number of zero-level cache transactions: 15 Time spent in level-0 sysdb transactions: 324 ms Time spent writing to LDB: 93 ms Number of LDAP searches: 83 Time spent waiting for LDAP: 1480105770919 ms LDAP searches breakdown: Number of user requests: 0 Time spent in user requests: 0
Number of group requests: 14 Time spent in group requests: 1933 Number of initgroups requests: 0 Time spent in initgroups requests: 0Unaccounted time: -1480105680145 ms sysdb transaction breakdown: 1 hits of transaction sysdb_transaction_commit+0xa0 [libsss_util.so] sdap_nested_done+0x2d5 [libsss_ldap_common.so] sdap_nested_group_process_done+0x1fe [libsss_ldap_common.so] sdap_nested_group_process_done+0x1fe [libsss_ldap_common.so] 0x7f78b9781474 [libtevent.so.0.9.30+0x5474] avg:36 min: 36 max: 36 sum: 36
8 hits of transaction sysdb_transaction_commit+0xa0 [libsss_util.so] sdap_nested_done+0x2d5 [libsss_ldap_common.so] sdap_nested_group_process_done+0x1fe [libsss_ldap_common.so] 0x7f78b9781474 [libtevent.so.0.9.30+0x5474] avg:21 min: 19 max: 28 sum: 171
4 hits of transaction sysdb_transaction_commit+0xa0 [libsss_util.so] sdap_nested_done+0x2d5 [libsss_ldap_common.so] sdap_nested_group_process_done+0x21e [libsss_ldap_common.so] 0x7f78b9781474 [libtevent.so.0.9.30+0x5474] avg:29 min: 21 max: 52 sum: 117
The most expensive transaction breakdown, per transaction: value |-------------------------------------------------- count 0 |@@@ 3 50 |@ 1 100 | 0 150 | 0
############################################################ ########################################
[root@fc25-vm systemtap]# stap -d /usr/lib64/libtevent.so.0.9.30 id_perf.stp WARNING: Missing unwind data for a module, rerun with 'stap -d /usr/libexec/sssd/sssd_be' Total run time of id was: 102614 ms Number of zero-level cache transactions: 34 Time spent in level-0 sysdb transactions: 7789 ms Time spent writing to LDB: 519 ms Number of LDAP searches: 742 Time spent waiting for LDAP: 51312 ms LDAP searches breakdown: Number of user requests: 1 Time spent in user requests: 144
Number of group requests: 30 Time spent in group requests: 50523 Number of initgroups requests: 1 Time spent in initgroups requests: 465Unaccounted time: 43513 ms sysdb transaction breakdown: 2 hits of transaction sysdb_transaction_commit+0xa0 [libsss_util.so] sdap_nested_done+0x2d5 [libsss_ldap_common.so] sdap_nested_group_process_done+0x1fe [libsss_ldap_common.so] tevent_common_loop_immediate+0xd4 [libtevent.so.0.9.30] epoll_event_loop_once+0x5d [libtevent.so.0.9.30] std_event_loop_once+0x37 [libtevent.so.0.9.30] _tevent_loop_once+0x9d [libtevent.so.0.9.30] tevent_common_loop_wait+0x1b [libtevent.so.0.9.30] std_event_loop_wait+0x37 [libtevent.so.0.9.30] server_loop+0x13 [libsss_util.so] 0x55a92ac7c677 [sssd_be+0x8 avg:22 min: 22 max: 23 sum: 45
1 hits of transaction sysdb_transaction_commit+0xa0 [libsss_util.so] sdap_nested_done+0x2d5 [libsss_ldap_common.so] sdap_nested_group_process_done+0x1fe [libsss_ldap_common.so] sdap_nested_group_process_done+0x1fe [libsss_ldap_common.so] tevent_common_loop_immediate+0xd4 [libtevent.so.0.9.30] epoll_event_loop_once+0x5d [libtevent.so.0.9.30] std_event_loop_once+0x37 [libtevent.so.0.9.30] _tevent_loop_once+0x9d [libtevent.so.0.9.30] tevent_common_loop_wait+0x1b [libtevent.so.0.9.30] std_event_loop_wait+0x37 [libtevent.so.0.9.30]
avg:53 min: 53 max: 53 sum: 53
4 hits of transaction sysdb_transaction_commit+0xa0 [libsss_util.so] sdap_nested_done+0x2d5 [libsss_ldap_common.so] sdap_nested_group_process_done+0x21e [libsss_ldap_common.so] tevent_common_loop_immediate+0xd4 [libtevent.so.0.9.30] epoll_event_loop_once+0x5d [libtevent.so.0.9.30] std_event_loop_once+0x37 [libtevent.so.0.9.30] _tevent_loop_once+0x9d [libtevent.so.0.9.30] tevent_common_loop_wait+0x1b [libtevent.so.0.9.30] std_event_loop_wait+0x37 [libtevent.so.0.9.30] server_loop+0x13 [libsss_util.so] 0x55fcef0ca677 [sssd_be+0x8 avg:22 min: 22 max: 23 sum: 90
2 hits of transaction sysdb_transaction_commit+0xa0 [libsss_util.so] sdap_nested_done+0x2d5 [libsss_ldap_common.so] sdap_nested_group_process_done+0x21e [libsss_ldap_common.so] tevent_common_loop_immediate+0xd4 [libtevent.so.0.9.30] epoll_event_loop_once+0x5d [libtevent.so.0.9.30] std_event_loop_once+0x37 [libtevent.so.0.9.30] _tevent_loop_once+0x9d [libtevent.so.0.9.30] tevent_common_loop_wait+0x1b [libtevent.so.0.9.30] std_event_loop_wait+0x37 [libtevent.so.0.9.30] server_loop+0x13 [libsss_util.so] 0x55a92ac7c677 [sssd_be+0x8 avg:2635 min: 67 max: 5203 sum: 5270
2 hits of transaction sysdb_transaction_commit+0xa0 [libsss_util.so] sdap_nested_done+0x2d5 [libsss_ldap_common.so] tevent_common_loop_immediate+0xd4 [libtevent.so.0.9.30] epoll_event_loop_once+0x5d [libtevent.so.0.9.30] std_event_loop_once+0x37 [libtevent.so.0.9.30] _tevent_loop_once+0x9d [libtevent.so.0.9.30] tevent_common_loop_wait+0x1b [libtevent.so.0.9.30] std_event_loop_wait+0x37 [libtevent.so.0.9.30] server_loop+0x13 [libsss_util.so] 0x55fcef0ca677 [sssd_be+0x8677] avg:25 min: 25 max: 26 sum: 51
1 hits of transaction sysdb_transaction_commit+0xa0 [libsss_util.so] sdap_nested_done+0x2d5 [libsss_ldap_common.so] sdap_nested_group_process_done+0x21e [libsss_ldap_common.so] sdap_nested_group_process_done+0x1fe [libsss_ldap_common.so] sdap_nested_group_process_done+0x1fe [libsss_ldap_common.so] tevent_common_loop_immediate+0xd4 [libtevent.so.0.9.30] epoll_event_loop_once+0x5d [libtevent.so.0.9.30] std_event_loop_once+0x37 [libtevent.so.0.9.30] _tevent_loop_once+0x9d [libtevent.so.0.9.30] tevent_common_loop_wait+0x1b [libteve avg:1539 min: 1539 max: 1539 sum: 1539
1 hits of transaction sysdb_transaction_commit+0xa0 [libsss_util.so] sdap_ad_save_group_membership_with_idmapping+0x532 [libsss_ldap_common.so] sdap_ad_tokengroups_initgr_mapping_done+0x13b [libsss_ldap_common.so] sdap_get_ad_tokengroups_done+0x22f [libsss_ldap_common.so] generic_ext_search_handler.isra.4+0xe0 [libsss_ldap_common.so] sdap_get_generic_op_finished+0x5ba [libsss_ldap_common.so] sdap_process_result+0x71d [libsss_ldap_common.so] tevent_common_loop_timer_delay+0xd0 [libtevent.so.0.9.30] epoll_event_loop_once+0x69 [li avg:60 min: 60 max: 60 sum: 60
14 hits of transaction sysdb_transaction_commit+0xa0 [libsss_util.so] sdap_nested_done+0x2d5 [libsss_ldap_common.so] sdap_nested_group_process_done+0x1fe [libsss_ldap_common.so] tevent_common_loop_immediate+0xd4 [libtevent.so.0.9.30] epoll_event_loop_once+0x5d [libtevent.so.0.9.30] std_event_loop_once+0x37 [libtevent.so.0.9.30] _tevent_loop_once+0x9d [libtevent.so.0.9.30] tevent_common_loop_wait+0x1b [libtevent.so.0.9.30] std_event_loop_wait+0x37 [libtevent.so.0.9.30] server_loop+0x13 [libsss_util.so] 0x55fcef0ca677 [sssd_be+0x8 avg:29 min: 20 max: 47 sum: 416
1 hits of transaction sysdb_transaction_commit+0xa0 [libsss_util.so] sdap_save_users+0x28a [libsss_ldap_common.so] sdap_get_users_done+0xd2 [libsss_ldap_common.so] sdap_search_user_process+0x25f [libsss_ldap_common.so] generic_ext_search_handler.isra.4+0xe0 [libsss_ldap_common.so] sdap_get_generic_op_finished+0x5ba [libsss_ldap_common.so] sdap_process_result+0x71d [libsss_ldap_common.so] tevent_common_loop_timer_delay+0xd0 [libtevent.so.0.9.30] epoll_event_loop_once+0x69 [libtevent.so.0.9.30] std_event_loop_once+0x37 [libtevent avg:116 min: 116 max: 116 sum: 116
1 hits of transaction sysdb_transaction_commit+0xa0 [libsss_util.so] sdap_nested_done+0x2d5 [libsss_ldap_common.so] sdap_nested_group_process_done+0x1fe [libsss_ldap_common.so] sdap_nested_group_process_done+0x21e [libsss_ldap_common.so] tevent_common_loop_immediate+0xd4 [libtevent.so.0.9.30] epoll_event_loop_once+0x5d [libtevent.so.0.9.30] std_event_loop_once+0x37 [libtevent.so.0.9.30] _tevent_loop_once+0x9d [libtevent.so.0.9.30] tevent_common_loop_wait+0x1b [libtevent.so.0.9.30] std_event_loop_wait+0x37 [libtevent.so.0.9.30]
avg:83 min: 83 max: 83 sum: 83
1 hits of transaction sysdb_transaction_commit+0xa0 [libsss_util.so] sdap_get_initgr_user+0x216 [libsss_ldap_common.so] generic_ext_search_handler.isra.4+0xe0 [libsss_ldap_common.so] sdap_get_generic_op_finished+0x5ba [libsss_ldap_common.so] sdap_process_result+0x71d [libsss_ldap_common.so] tevent_common_loop_timer_delay+0xd0 [libtevent.so.0.9.30] epoll_event_loop_once+0x69 [libtevent.so.0.9.30] std_event_loop_once+0x37 [libtevent.so.0.9.30] _tevent_loop_once+0x9d [libtevent.so.0.9.30] tevent_common_loop_wait+0x1b [libtevent.so avg:6 min: 6 max: 6 sum: 6
2 hits of transaction sysdb_transaction_commit+0xa0 [libsss_util.so] sdap_nested_done+0x2d5 [libsss_ldap_common.so] sdap_nested_group_process_done+0x21e [libsss_ldap_common.so] sdap_nested_group_process_done+0x1fe [libsss_ldap_common.so] tevent_common_loop_immediate+0xd4 [libtevent.so.0.9.30] epoll_event_loop_once+0x5d [libtevent.so.0.9.30] std_event_loop_once+0x37 [libtevent.so.0.9.30] _tevent_loop_once+0x9d [libtevent.so.0.9.30] tevent_common_loop_wait+0x1b [libtevent.so.0.9.30] std_event_loop_wait+0x37 [libtevent.so.0.9.30]
avg:30 min: 26 max: 34 sum: 60
The most expensive transaction breakdown, per transaction: value |-------------------------------------------------- count 0 | 0 50 |@ 1 100 | 0 150 | 0 ~ 450 | 0 500 | 0
500 |@ 1
############################################################ ########################################
[root@fc25-vm systemtap]# stap -d /usr/lib64/libtevent.so.0.9.30 -d /usr/libexec/sssd/sssd_be id_perf.stp WARNING: Missing unwind data for a module, rerun with 'stap -d /usr/lib64/ libc-2.24.so' Total run time of id was: 162710 ms Number of zero-level cache transactions: 32 Time spent in level-0 sysdb transactions: 944 ms Time spent writing to LDB: 301 ms Number of LDAP searches: 141 Time spent waiting for LDAP: 77244 ms LDAP searches breakdown: Number of user requests: 1 Time spent in user requests: 136
Number of group requests: 29 Time spent in group requests: 3561 Number of initgroups requests: 1 Time spent in initgroups requests: 143Unaccounted time: 84522 ms sysdb transaction breakdown: 9 hits of transaction sysdb_transaction_commit+0xa0 [libsss_util.so] sdap_nested_done+0x2d5 [libsss_ldap_common.so] sdap_nested_group_process_done+0x1fe [libsss_ldap_common.so] tevent_common_loop_immediate+0xd4 [libtevent.so.0.9.30] epoll_event_loop_once+0x5d [libtevent.so.0.9.30] std_event_loop_once+0x37 [libtevent.so.0.9.30] _tevent_loop_once+0x9d [libtevent.so.0.9.30] tevent_common_loop_wait+0x1b [libtevent.so.0.9.30] std_event_loop_wait+0x37 [libtevent.so.0.9.30] server_loop+0x13 [libsss_util.so] main+0x707 [sssd_be] 0x7f76 avg:28 min: 22 max: 37 sum: 254
1 hits of transaction sysdb_transaction_commit+0xa0 [libsss_util.so] sdap_get_initgr_user+0x216 [libsss_ldap_common.so] generic_ext_search_handler.isra.4+0xe0 [libsss_ldap_common.so] sdap_get_generic_op_finished+0x5ba [libsss_ldap_common.so] sdap_process_result+0x71d [libsss_ldap_common.so] tevent_common_loop_timer_delay+0xd0 [libtevent.so.0.9.30] epoll_event_loop_once+0x69 [libtevent.so.0.9.30] std_event_loop_once+0x37 [libtevent.so.0.9.30] _tevent_loop_once+0x9d [libtevent.so.0.9.30] tevent_common_loop_wait+0x1b [libtevent.so avg:5 min: 5 max: 5 sum: 5
3 hits of transaction sysdb_transaction_commit+0xa0 [libsss_util.so] sdap_nested_done+0x2d5 [libsss_ldap_common.so] tevent_common_loop_immediate+0xd4 [libtevent.so.0.9.30] epoll_event_loop_once+0x5d [libtevent.so.0.9.30] std_event_loop_once+0x37 [libtevent.so.0.9.30] _tevent_loop_once+0x9d [libtevent.so.0.9.30] tevent_common_loop_wait+0x1b [libtevent.so.0.9.30] std_event_loop_wait+0x37 [libtevent.so.0.9.30] server_loop+0x13 [libsss_util.so] main+0x707 [sssd_be] 0x7f7675d86401 [libc-2.24.so+0x20401] avg:21 min: 21 max: 22 sum: 64
1 hits of transaction sysdb_transaction_commit+0xa0 [libsss_util.so] sdap_nested_done+0x2d5 [libsss_ldap_common.so] sdap_nested_group_process_done+0x21e [libsss_ldap_common.so] tevent_common_loop_immediate+0xd4 [libtevent.so.0.9.30] epoll_event_loop_once+0x5d [libtevent.so.0.9.30] std_event_loop_once+0x37 [libtevent.so.0.9.30] _tevent_loop_once+0x9d [libtevent.so.0.9.30] tevent_common_loop_wait+0x1b [libtevent.so.0.9.30] std_event_loop_wait+0x37 [libtevent.so.0.9.30] server_loop+0x13 [libsss_util.so] main+0x707 [sssd_be] 0x7fc1 avg:35 min: 35 max: 35 sum: 35
1 hits of transaction sysdb_transaction_commit+0xa0 [libsss_util.so] sdap_nested_done+0x2d5 [libsss_ldap_common.so] sdap_nested_group_process_done+0x1fe [libsss_ldap_common.so] sdap_nested_group_process_done+0x21e [libsss_ldap_common.so] tevent_common_loop_immediate+0xd4 [libtevent.so.0.9.30] epoll_event_loop_once+0x5d [libtevent.so.0.9.30] std_event_loop_once+0x37 [libtevent.so.0.9.30] _tevent_loop_once+0x9d [libtevent.so.0.9.30] tevent_common_loop_wait+0x1b [libtevent.so.0.9.30] std_event_loop_wait+0x37 [libtevent.so.0.9.30]
avg:42 min: 42 max: 42 sum: 42
1 hits of transaction sysdb_transaction_commit+0xa0 [libsss_util.so] sdap_ad_save_group_membership_with_idmapping+0x532 [libsss_ldap_common.so] sdap_ad_tokengroups_initgr_mapping_done+0x13b [libsss_ldap_common.so] sdap_get_ad_tokengroups_done+0x22f [libsss_ldap_common.so] generic_ext_search_handler.isra.4+0xe0 [libsss_ldap_common.so] sdap_get_generic_op_finished+0x5ba [libsss_ldap_common.so] sdap_process_result+0x71d [libsss_ldap_common.so] tevent_common_loop_timer_delay+0xd0 [libtevent.so.0.9.30] epoll_event_loop_once+0x69 [li avg:86 min: 86 max: 86 sum: 86
2 hits of transaction sysdb_transaction_commit+0xa0 [libsss_util.so] sdap_nested_done+0x2d5 [libsss_ldap_common.so] sdap_nested_group_process_done+0x21e [libsss_ldap_common.so] sdap_nested_group_process_done+0x1fe [libsss_ldap_common.so] tevent_common_loop_immediate+0xd4 [libtevent.so.0.9.30] epoll_event_loop_once+0x5d [libtevent.so.0.9.30] std_event_loop_once+0x37 [libtevent.so.0.9.30] _tevent_loop_once+0x9d [libtevent.so.0.9.30] tevent_common_loop_wait+0x1b [libtevent.so.0.9.30] std_event_loop_wait+0x37 [libtevent.so.0.9.30]
avg:31 min: 26 max: 36 sum: 62
2 hits of transaction sysdb_transaction_commit+0xa0 [libsss_util.so] sdap_nested_done+0x2d5 [libsss_ldap_common.so] sdap_nested_group_process_done+0x21e [libsss_ldap_common.so] sdap_nested_group_process_done+0x21e [libsss_ldap_common.so] tevent_common_loop_immediate+0xd4 [libtevent.so.0.9.30] epoll_event_loop_once+0x5d [libtevent.so.0.9.30] std_event_loop_once+0x37 [libtevent.so.0.9.30] _tevent_loop_once+0x9d [libtevent.so.0.9.30] tevent_common_loop_wait+0x1b [libtevent.so.0.9.30] std_event_loop_wait+0x37 [libtevent.so.0.9.30]
avg:25 min: 24 max: 26 sum: 50
1 hits of transaction sysdb_transaction_commit+0xa0 [libsss_util.so] sdap_nested_done+0x2d5 [libsss_ldap_common.so] sdap_nested_group_process_done+0x1fe [libsss_ldap_common.so] tevent_common_loop_immediate+0xd4 [libtevent.so.0.9.30] epoll_event_loop_once+0x5d [libtevent.so.0.9.30] std_event_loop_once+0x37 [libtevent.so.0.9.30] _tevent_loop_once+0x9d [libtevent.so.0.9.30] tevent_common_loop_wait+0x1b [libtevent.so.0.9.30] std_event_loop_wait+0x37 [libtevent.so.0.9.30] server_loop+0x13 [libsss_util.so] main+0x707 [sssd_be] 0x7fc1 avg:35 min: 35 max: 35 sum: 35
4 hits of transaction sysdb_transaction_commit+0xa0 [libsss_util.so] sdap_nested_done+0x2d5 [libsss_ldap_common.so] sdap_nested_group_process_done+0x21e [libsss_ldap_common.so] tevent_common_loop_immediate+0xd4 [libtevent.so.0.9.30] epoll_event_loop_once+0x5d [libtevent.so.0.9.30] std_event_loop_once+0x37 [libtevent.so.0.9.30] _tevent_loop_once+0x9d [libtevent.so.0.9.30] tevent_common_loop_wait+0x1b [libtevent.so.0.9.30] std_event_loop_wait+0x37 [libtevent.so.0.9.30] server_loop+0x13 [libsss_util.so] main+0x707 [sssd_be] 0x7f76 avg:27 min: 21 max: 36 sum: 111
1 hits of transaction sysdb_transaction_commit+0xa0 [libsss_util.so] sdap_save_users+0x28a [libsss_ldap_common.so] sdap_get_users_done+0xd2 [libsss_ldap_common.so] sdap_search_user_process+0x25f [libsss_ldap_common.so] generic_ext_search_handler.isra.4+0xe0 [libsss_ldap_common.so] sdap_get_generic_op_finished+0x5ba [libsss_ldap_common.so] sdap_process_result+0x71d [libsss_ldap_common.so] tevent_common_loop_timer_delay+0xd0 [libtevent.so.0.9.30] epoll_event_loop_once+0x69 [libtevent.so.0.9.30] std_event_loop_once+0x37 [libtevent avg:114 min: 114 max: 114 sum: 114
3 hits of transaction sysdb_transaction_commit+0xa0 [libsss_util.so] sdap_nested_done+0x2d5 [libsss_ldap_common.so] sdap_nested_group_process_done+0x1fe [libsss_ldap_common.so] sdap_nested_group_process_done+0x1fe [libsss_ldap_common.so] tevent_common_loop_immediate+0xd4 [libtevent.so.0.9.30] epoll_event_loop_once+0x5d [libtevent.so.0.9.30] std_event_loop_once+0x37 [libtevent.so.0.9.30] _tevent_loop_once+0x9d [libtevent.so.0.9.30] tevent_common_loop_wait+0x1b [libtevent.so.0.9.30] std_event_loop_wait+0x37 [libtevent.so.0.9.30]
avg:28 min: 26 max: 33 sum: 86
The most expensive transaction breakdown, per transaction: value |-------------------------------------------------- count 0 | 0 50 | 0 100 |@ 1 150 | 0 200 | 0
############################################################ ######################################## Caching appears to be taking effect here. Guessing I should clear the user cache, is there a best practice for that, rather than just clearing out the sss/db/ directory? ############################################################ ######################################## [root@fc25-vm systemtap]# stap nested_group_perf.stp ^CTime spent in group sssd_be searches: 2033 Time spent in sdap_nested_group_send/recv: 1112 ms (ratio: 54.69%) Time spent in zero-level sysdb transactions: 699 ms (ratio: 34.38%)
Breakdown of sdap_nested_group req (total: 1112 ms) sdap_nested_group_process req: 1111 sdap_nested_group_process_split req: 11 sdap_nested_group_check_cache: 11 sdap_nested_group_sysdb_search_users: 6 sdap_nested_group_sysdb_search_groups: 3 ldap request breakdown of total 2144 sdap_nested_group_deref req: 54 sdap_deref_search_send req 54 processing deref results: 0 sdap_nested_group_lookup_user req: 979 sdap_nested_group_lookup_group req: 66 Time spent refreshing unknown members: 1045
Breakdown of results processing (total 699) Time spent populating nested members: 3 Time spent searching ldb while populating nested members: 3 Time spent saving nested members: 330 Time spent writing to the ldb: 226 ms
############################################################ ######################################## This user is from a completely different department, so it likely didn't hit the cache much. ############################################################ ######################################## [root@fc25-vm systemtap]# stap nested_group_perf.stp ^CTime spent in group sssd_be searches: 12502 Time spent in sdap_nested_group_send/recv: 4642 ms (ratio: 37.13%) Time spent in zero-level sysdb transactions: 1099 ms (ratio: 8.79%)
Breakdown of sdap_nested_group req (total: 4642 ms) sdap_nested_group_process req: 4971 sdap_nested_group_process_split req: 53 sdap_nested_group_check_cache: 51 sdap_nested_group_sysdb_search_users: 17 sdap_nested_group_sysdb_search_groups: 33 ldap request breakdown of total 55789 sdap_nested_group_deref req: 2908 sdap_deref_search_send req 50266 processing deref results: 2 sdap_nested_group_lookup_user req: 2138 sdap_nested_group_lookup_group req: 623 Time spent refreshing unknown members: 2762
Breakdown of results processing (total 1099) Time spent populating nested members: 29 Time spent searching ldb while populating nested members: 23 Time spent saving nested members: 635 Time spent writing to the ldb: 303 ms _______________________________________________ sssd-users mailing list -- sssd-users@lists.fedorahosted.org To unsubscribe send an email to sssd-users-leave@lists.fedorahosted.org