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dp_request.stp
(2.35 KB)
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id_perf.stp
(3.76 KB)
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ldap_perf.stp
(3.01 KB)
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nested_group_perf.stp
(8.41 KB)
Editing: ldap_perf.stp
/* Start Run with: * * stap ldap_perf.stp * * Then reproduce slow operation in another terminal. * Ctrl-C running stap once login completes. * * This script watches all sssd_be processes. This can be limited by * specifying sssd_be process id * * stap -G sssd_be_pid=1234 ldap_perf.stp * * Probe tapsets are in /usr/share/systemtap/tapset/sssd.stp */ global start_time; global sdap_attributes; global query_attributes; global sssd_be_pid=0; global slowest_request_time; global slowest_request_filter; global slowest_request_scope; global slowest_request_base; global slowest_request_attrs; probe begin { printf("===== ldap queries probe started =====\n"); id = pid(); start_time[id] = gettimeofday_us(); query_attributes[id] = ""; slowest_request_time = 0; slowest_request_filter = ""; slowest_request_scope = 0; slowest_request_base = ""; slowest_request_attrs = ""; } probe sdap_parse_entry { id = pid(); if (sssd_be_pid == 0 || sssd_be_pid == id) { idx = 0; while ([id, attr, idx] in sdap_attributes) { idx++; } sdap_attributes[id, attr, idx] = value; } } probe sdap_parse_entry_done { id = pid(); if (sssd_be_pid == 0 || sssd_be_pid == id) { dn = sdap_attributes[id, "OriginalDN", 0]; printf("[%d] <- dn: %s\n", id, dn); delete sdap_attributes[id, "OriginalDN", *]; foreach ([x, attr, idx] in sdap_attributes[id,*,*]) { printf("[%d] <- %s: %s\n", id, attr, sdap_attributes[x, attr, idx]); } delete sdap_attributes[id, *, *]; } } probe sdap_search_send { id = pid(); if (sssd_be_pid == 0 || sssd_be_pid == id) { printf("[%d] -> ldap request: basedn '%s', scope %d, filter '%s'\n", id, base, scope, filter); printf("[%d] -> attrs: %s\n", id, attrs); query_attributes[id] = attrs; start_time[id] = gettimeofday_ms(); delete sdap_attributes[id, *, *]; } } probe sdap_search_recv { id = pid(); if (sssd_be_pid == 0 || sssd_be_pid == id) { delta = gettimeofday_ms() - start_time[id]; printf("[%d] ldap response to request: basedn '%s', scope %d, filter '%s'\n", id, base, scope, filter); printf("[%d] took: %d ms\n", id, delta); printf("[%d]--------------------------------------------------\n", id); if (slowest_request_time < delta) { slowest_request_time = delta; slowest_request_base = base; slowest_request_scope = scope; slowest_request_filter = filter; slowest_request_attrs = query_attributes[id]; } } } probe process("/usr/libexec/sssd/sssd_be").end { printf("done\n"); } probe end { printf("\n===== slowest ldap request =====\n"); printf("base: '%s'\nscope: %d\nfilter: '%s'\nattrs: %s\ntook: %d ms\n", slowest_request_base, slowest_request_scope, slowest_request_filter, slowest_request_attrs, slowest_request_time); }
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