Hi, I have already done these tests, but the result provides little information, none of which is useful for directing the analysis.
2013/9/6 Maucci, Cyrille <[email protected]> > When I myself face such a problem, I usually pstack the process a few > times to very quickly know what the guy is doing.**** > > And that usually gives me a good clue.**** > > ** ** > > ++Cyrille**** > > ** ** > > *From:* [email protected] [mailto: > [email protected]] *On Behalf Of *Luca Polidoro > *Sent:* Monday, August 12, 2013 3:31 PM > *To:* [email protected] > *Subject:* Slapd High CPU usage on Solaris 9**** > > ** ** > > Hello, > > I am writing to to submit a case that has been happening in the last 2 > weeks in our infrastructure. This is structured as follows: > > > 1 provider: Solaris 9 SPARC - Sun Fire V490 - last OS patch level > CPU: 4-1500 Mhz > RAM: 32 GB > > OpenLDAP version used: Berkeley DB 2.4.23 and 4.8.30 (with database bdb) > all 64-bit > > 18 consumer: Solaris 9 SPARC - last OS patch level with different types of > features (CPU, RAM) > > On the following consumer products: > > Consumer 1: Solaris 9 SPARC - Sun Fire 480R - last OS patch level > CPU: 4-900 Mhz > RAM: 8 GB > > Consumer 2: Solaris 9 SPARC - Sun Fire 480R - last OS patch level > CPU: 4-1050 Mhz > RAM: 8 GB > > Consumer 3: Solaris 9 SPARC - Sun Fire 480R - last OS patch level > CPU: 4-1050 Mhz > RAM: 8 GB > > Consumer 4: Solaris 9 SPARC - Sun Fire V210 - last OS patch level > CPU: 2-1336 Mhz > RAM: 8 GB > > we are noticing an increase in the cpu used by the slapd process. In fact, > the process is constantly between 85% and 95%, and became completely > unusable and then we are forced to restart.**** > > LDAP with 1.000.000 objects. > > This is the consumer's slapd.conf (I have omitted parts of the ACL, > includes, etc..):**** > > # See slapd.conf(5) for details on configuration options. > # This file should NOT be world readable. > # > > # > # VERSION v2 - Digital Tru64 > # > allow bind_v2 > > > Some include > ... > > # > # tuning parameters - START > # ------------------------------ > # > conn_max_pending 1000 > conn_max_pending_auth 1000 > > idletimeout 500 > sizelimit unlimited > threads 8 > timelimit 500 > disallow bind_anon > > # > # tuning parameters - END > # ---------------------------- > # > > ... > > ####################################################################### > # bdb database definitions > ####################################################################### > > database bdb > suffix "xxxxxxxxxxxx" > rootdn "cn=root,ou=ldapusers,xxxxx" > > directory /var/openldap-2.4.23_64/var/openldap-data > #####disallow limit for syncuser > limits dn.children="ou=syncusers,xxxx" size=unlimited > index objectClass,entryCSN,entryUUID eq > index ou eq,sub,subinitial,subany,subfinal > index uidOwner eq > index uid eq > index memberUid eq > > #shm_key 1100 > cachesize 1000000 > cachefree 10000 > dncachesize 1000000 > idlcachesize 1000000 > searchstack 16 > checkpoint 1024 10 > > overlay ppolicy > ppolicy_default "cn=Standard,ou=Policies,xxxx" > ppolicy_use_lockout > > > > ############################SYNCREPL CONF > syncrepl rid=011 > provider=ldap://xxxxxx > type=refreshAndPersist > interval=00:00:15:00 > retry="15 10 120 +" > searchbase="xxxxx" > filter="(objectClass=*)" > attrs="*,+" > scope=sub > schemachecking=on > bindmethod=simple > binddn="xxxxxx" > credentials=xxxx > ############################SYNCREPL CONF > > > These are the bdb files: > > 420M dn2id.bdb > 30M entryCSN.bdb > 32M entryUUID.bdb > 1,4G id2entry.bdb > 18M memberUid.bdb > 4,9M objectClass.bdb > 5,3M ou.bdb > 17M uid.bdb > 17M uidOwner.bdb > > this is DB CONFIG: > > ----------------------------------------------------------- > > ########################################## > ########################################### > #set_cachesize 0 300000000 10 > #set_lg_regionmax 262144 > #set_lg_bsize 2097152 > ########################################### > ########################################### > # replaces lockdetect directive > #set_lk_detect DB_LOCK_EXPIRE > set_lk_detect DB_LOCK_DEFAULT > > # uncomment if dbnosync required > #AGGIUNTO TUTTO > #set_flags DB_TXN_WRITE_NOSYNC > ####AGGIUNTO > set_flags DB_LOG_AUTOREMOVE > # multiple set_flags directives allowed > > # sets max log size = 5M (BDB default=10M) > set_lg_max 25242880 > set_lg_dir /var/openldap-2.4.23_64/logs > > set_cachesize 2 274726912 1 > # sets a database cache of 5M and > # allows fragmentation > # does NOT replace slapd.conf cachesize > # this is a database parameter > > #txn_checkpoint 128 15 0 > # replaces checkpoint in slap.conf > # writes checkpoint if 128K written or every 15 mins > # 0 = no writes - no update > set_lk_max_locks 2500 > set_lk_max_lockers 2500 > set_lk_max_objects 2500 > > --------------------------------------------------- > > We have tried to change the number of threads bringing them to 16, we > lowered the parameters idletimeout and timelimit, but without result. > > > Appreciate your feedback.**** > > Thanks,**** > > Luca**** >
