Re: 389-ds and Multi CPU's

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On 12/09/2014 12:14 PM, Fong, Trevor wrote:
Hi Mark,

Oops – sorry about the Mike thing!  I sit beside a Mike :p
No worries :-)

So your high CPU is most likely coming from your unindexed searches.

The version you are on should support the new per index idlistscanlimit, so try this:

Note, this this is just an example, your objectclass entry might have a different DN (userRoot might be something else in your deployment)

ldapmodify ...
dn: cn=objectclass,cn=index,cn=userRoot,cn=ldbm database,cn=plugins,cn=config
changetype: modify
replace: nsIndexIDListScanLimit
nsIndexIDListScanLimit: limit=-1 type=eq values=inetOrgPerson

Depending on your results we might tweak the nsIndexIDListScanLimit value again.  This change should take effect immediately - no need to restart.

Let me know how it goes.

Thanks,
Mark

Oh – no notes in that search, but there are notes in the preceding and subsequent searches.  It looks like it returns the first 100 results then searches for groupOfNames for each of those users, and then repeats until all 30,000 users is done:

08/Dec/2014:07:08:04 -0800] conn=130261 fd=64 slot=64 SSL connection from <ip addr 1> to <ip addr 2>
[08/Dec/2014:07:08:04 -0800] conn=130261 SSL 256-bit AES
[08/Dec/2014:07:08:04 -0800] conn=130261 op=0 BIND dn="<service account>" method=128 version=3
[08/Dec/2014:07:08:04 -0800] conn=130261 op=0 RESULT err=0 tag=97 nentries=0 etime=0 dn="<service account>"
[08/Dec/2014:07:08:04 -0800] conn=130261 op=1 SRCH base="" scope=0 filter="(objectClass=*)" attrs="supportedControl"
[08/Dec/2014:07:08:04 -0800] conn=130261 op=1 RESULT err=0 tag=101 nentries=1 etime=0
[08/Dec/2014:07:08:04 -0800] conn=130261 op=2 SRCH base="ou=EMPLOYEES,dc=<our dc>" scope=2 filter="(&(objectClass=inetOrgPerson))" attrs="businessCategory carLicense cn departmentNumber description destinationIndicator displayName distinguishedName employeeNumber employeeType facsimileTelephoneNumber givenName groups homePhone homePostalAddress initials internationalISDNNumber l mail manager mobile o objectClass o ou pager physicalDeliveryOfficeName postOfficeBox postalAddress postalCode preferredDeliveryMethod preferredLanguage registeredAddress roomNumber secretary seeAlso sn st street telephoneNumber teletexTerminalIdentifier telexNumber title ubcEduCwlPUID uid nsAccountLock passwordRetryCount"
[08/Dec/2014:07:08:04 -0800] conn=130261 op=2 SORT cn (*)
[08/Dec/2014:07:08:04 -0800] conn=130261 op=2 RESULT err=0 tag=101 nentries=100 etime=0 notes=P,A
[08/Dec/2014:07:08:04 -0800] conn=130262 fd=83 slot=83 SSL connection from <ip addr 1> to <ip addr 2>
[08/Dec/2014:07:08:04 -0800] conn=130262 SSL 256-bit AES
[08/Dec/2014:07:08:04 -0800] conn=130262 op=0 BIND dn="<service account>" method=128 version=3
[08/Dec/2014:07:08:04 -0800] conn=130262 op=0 RESULT err=0 tag=97 nentries=0 etime=0 dn="<service account>"
[08/Dec/2014:07:08:04 -0800] conn=130262 op=1 SRCH base="ou=GROUPS,dc=<our dc>" scope=2 filter="(&(objectClass=groupOfNames)(member=uid=<login_x>,ou=EMPLOYEES,dc=<our dc>))" attrs="1.1"
[08/Dec/2014:07:08:04 -0800] conn=130262 op=1 RESULT err=0 tag=101 nentries=5 etime=0
… <snip>
[08/Dec/2014:07:08:05 -0800] conn=130262 op=100 SRCH base="ou=GROUPS,dc=<our dc>" scope=2 filter="(&(objectClass=groupOfNames)(member=uid=<login_x+100>,ou=EMPLOYEES,dc=<our dc>))" attrs="1.1"
[08/Dec/2014:07:08:05 -0800] conn=130262 op=100 RESULT err=0 tag=101 nentries=3 etime=0
[08/Dec/2014:07:08:05 -0800] conn=130261 op=3 SRCH base="ou=EMPLOYEES,dc=<our dc>" scope=2 filter="(&(objectClass=inetOrgPerson))" attrs="businessCategory carLicense cn departmentNumber description destinationIndicator displayName distinguishedName employeeNumber employeeType facsimileTelephoneNumber givenName groups homePhone homePostalAddress initials internationalISDNNumber l mail manager mobile o objectClass o ou pager physicalDeliveryOfficeName postOfficeBox postalAddress postalCode preferredDeliveryMethod preferredLanguage registeredAddress roomNumber secretary seeAlso sn st street telephoneNumber teletexTerminalIdentifier telexNumber title ubcEduCwlPUID uid nsAccountLock passwordRetryCount"
… <snip>
[08/Dec/2014:07:08:05 -0800] conn=130261 op=3 RESULT err=0 tag=101 nentries=100 etime=0 notes=U,P

Oh cool – I didn’t know about logconv.pl!  Output follows.

Thanks again,
Trev



Total Log Lines Analysed:  799338


----------- Access Log Output ------------

Start of Logs:    08/Dec/2014:05:56:33
End of Logs:      08/Dec/2014:10:31:46

Processed Log Time:  4 Hours, 35 Minutes, 13 Seconds

Restarts:                     0
Total Connections:            87873
 - StartTLS Connections:      0
 - LDAPS Connections:         87265
 - LDAPI Connections:         0
Peak Concurrent Connections:  34
Total Operations:             227313
Total Results:                227314
Overall Performance:          100.0%

Searches:                     109051        (6.60/sec)  (396.24/min)
Modifications:                28121         (1.70/sec)  (102.18/min)
Adds:                         69            (0.00/sec)  (0.25/min)
Deletes:                      0             (0.00/sec)  (0.00/min)
Mod RDNs:                     0             (0.00/sec)  (0.00/min)
Compares:                     0             (0.00/sec)  (0.00/min)
Binds:                        85702         (5.19/sec)  (311.40/min)

Proxied Auth Operations:      0
Persistent Searches:          0
Internal Operations:          0
Entry Operations:             0
Extended Operations:          4370
Abandoned Requests:           0
Smart Referrals Received:     0

VLV Operations:               0
VLV Unindexed Searches:       0
VLV Unindexed Components:     0
SORT Operations:              3

Entire Search Base Queries:   0
Paged Searches:               505
Unindexed Searches:           2
Unindexed Components:         502

  Unindexed Search #1 (notes=A)
  -  Date/Time:             08/Dec/2014:10:30:12
  -  Connection Number:     215422
  -  Operation Number:      2
  -  Etime:                 1
  -  Nentries:              100
  -  IP Address:            10.7.8.105
  -  Search Base:           ou=employees,dc=<our dc>
  -  Search Scope:          2 (subtree)
  -  Search Filter:         (&(objectclass=inetorgperson))

  Unindexed Search #2 (notes=A)
  -  Date/Time:             08/Dec/2014:07:08:04
  -  Connection Number:     130261
  -  Operation Number:      2
  -  Etime:                 0
  -  Nentries:              100
  -  IP Address:            10.7.8.105
  -  Search Base:           ou=employees,dc=<our dc>
  -  Search Scope:          2 (subtree)
  -  Search Filter:         (&(objectclass=inetorgperson))

  Unindexed Component #1 (notes=U)
  -  Date/Time:             08/Dec/2014:05:56:45
  -  Connection Number:     129083
  -  Operation Number:      117
  -  Etime:                 0
  -  Nentries:              100
  -  IP Address:            Unknown_Host
  -  Search Base:           ou=employees,dc=<our dc>
  -  Search Scope:          2 (subtree)
  -  Search Filter:         (&(objectclass=inetorgperson))

  Unindexed Component #2 (notes=U)
  -  Date/Time:             08/Dec/2014:05:57:10
  -  Connection Number:     129083
  -  Operation Number:      122
  -  Etime:                 0
  -  Nentries:              100
  -  IP Address:            Unknown_Host
  -  Search Base:           ou=employees,dc=<our dc>
  -  Search Scope:          2 (subtree)
  -  Search Filter:         (&(objectclass=inetorgperson))
…<snip>
  Unindexed Component #502 (notes=U)
  -  Date/Time:             08/Dec/2014:10:30:47
  -  Connection Number:     215422
  -  Operation Number:      3
  -  Etime:                 0
  -  Nentries:              100
  -  IP Address:            10.7.8.105
  -  Search Base:           ou=employees,dc=<our dc>
  -  Search Scope:          2 (subtree)
  -  Search Filter:         (&(objectclass=inetorgperson))

FDs Taken:                    87873
FDs Returned:                 87863
Highest FD Taken:             275

Broken Pipes:                 0
Connections Reset By Peer:    0
Resource Unavailable:         0
Max BER Size Exceeded:        0

Binds:                        85702
Unbinds:                      83924
 - LDAP v2 Binds:             0
 - LDAP v3 Binds:             85702
 - AUTOBINDs:                 0
 - SSL Client Binds:          0
 - Failed SSL Client Binds:   0
 - SASL Binds:                0
 - Directory Manager Binds:   0
 - Anonymous Binds:           0
 - Other Binds:               85702



----- Connection Latency Details -----

 (in seconds)           <=1     2       3       4-5     6-10    11-15   >15
 --------------------------------------------------------------------------
 (# of connections)     87553   169     27      18      5       2       89

----- Current Open Connection IDs -----

Conn Number:  201302 (10.7.127.250)
Conn Number:  217063 (10.7.8.105)
Conn Number:  217064 (10.7.8.105)
Conn Number:  217061 (10.7.8.105)
Conn Number:  132242 (10.7.0.52)
Conn Number:  196007 (10.7.127.250)
Conn Number:  196107 (10.7.127.250)
Conn Number:  215425 (10.7.8.105)
Conn Number:  217060 (10.7.8.105)
Conn Number:  215422 (10.7.8.105)
Conn Number:  207139 (10.7.127.250)
Conn Number:  217062 (10.7.8.105)


----- Errors -----

err=0                224008    Successful Operations
err=32                 1652    No Such Object
err=53                 1652    Unwilling To Perform
err=49                    1    Invalid Credentials (Bad Password)
err=65                    1    Objectclass Violation

----- Top 20 Failed Logins ------

1           uid=ehannah,ou=employees,dc=<our dc>

From the IP address(s) :

1           10.7.127.250


----- Total Connection Codes -----

U1    83924   Cleanly Closed Connections
B1     1749   Bad Ber Tag Encountered


----- Top 20 Clients -----

Number of Clients:  13

[1] Client: 10.7.8.105
     83638 - Connections
     83631 - U1 (Cleanly Closed Connections)

[2] Client: 137.82.5.97
      1652 - Connections
      1652 - B1 (Bad Ber Tag Encountered)

[3] Client: 142.103.218.107
      1095 - Connections

[4] Client: 142.103.218.106
      1094 - Connections

[5] Client: 10.7.127.250
       112 - Connections
       106 - U1 (Cleanly Closed Connections)
         1 - B1 (Bad Ber Tag Encountered)

[6] Client: 127.0.0.1
        57 - Connections
        55 - B1 (Bad Ber Tag Encountered)
         2 - U1 (Cleanly Closed Connections)

[7] Client: 142.103.149.136
        55 - Connections
        41 - B1 (Bad Ber Tag Encountered)
        14 - U1 (Cleanly Closed Connections)

[8] Client: 10.7.0.52
        51 - Connections
        50 - U1 (Cleanly Closed Connections)

[9] Client: 142.103.106.141
        29 - Connections
        29 - U1 (Cleanly Closed Connections)

[10] Client: 142.103.106.143
        28 - Connections
        28 - U1 (Cleanly Closed Connections)

[11] Client: 142.103.106.145
        23 - Connections
        23 - U1 (Cleanly Closed Connections)

[12] Client: 142.103.106.135
        23 - Connections
        23 - U1 (Cleanly Closed Connections)

[13] Client: 142.103.106.142
        16 - Connections
        16 - U1 (Cleanly Closed Connections)



----- Top 20 Bind DN's -----

Number of Unique Bind DN's: 18

83795           uid=eldap-svciiq,ou=service accounts,ou=eldap,ou=services,dc=id,dc=ubc,dc=ca
1652            cn=bill fisher,ou=people,dc=dartware,dc=com
112             cn=directory manager
55              uid=eldap-svcvpnsync,ou=service accounts,ou=eldap,ou=services,dc=id,dc=ubc,dc=ca
51              cn=replication manager,cn=config
6               uid=alexnam,ou=employees,dc=<our dc>
4               uid=priyanth,ou=employees,dc=<our dc>
4               uid=arsuther,ou=employees,dc=<our dc>
4               uid=huynhh,ou=employees,dc=<our dc>
3               uid=ehannah,ou=employees,dc=<our dc>
2               uid=andyfehr,ou=employees,dc=<our dc>
2               uid=bullfrog,ou=employees,dc=<our dc>
2               uid=eddiefok,ou=employees,dc=<our dc>
2               uid=elyoung,ou=employees,dc=<our dc>
2               uid=elainez,ou=employees,dc=<our dc>
2               uid=flokam,ou=employees,dc=<our dc>
2               uid=mailvaga,ou=employees,dc=<our dc>
2               uid=sjones,ou=employees,dc=<our dc>


----- Top 20 Search Bases -----

Number of Unique Search Bases: 27876

78174           ou=groups,dc=<our dc>
1652            ou=people,dc=dartware,dc=com
676             ou=employees,dc=<our dc>
312             ou=people,dc=<our dc>
220             cn=mapping tree,cn=config
124             root dse
13              cn=idm-status-activeemployees,ou=idm,ou=role,ou=groups,dc=<our dc>
3               uid=jbartnik,ou=employees,dc=<our dc>
2               uid=rodsprus,ou=employees,dc=<our dc>
2               uid=zanottic,ou=employees,dc=<our dc>
2               uid=ttucker,ou=employees,dc=<our dc>
2               uid=dbilczuk,ou=employees,dc=<our dc>
2               uid=phys2012,ou=employees,dc=<our dc>
2               uid=ydeng,ou=employees,dc=<our dc>
2               uid=natcrang,ou=employees,dc=<our dc>
2               uid=lillaroy,ou=employees,dc=<our dc>
2               uid=wpr8847,ou=employees,dc=<our dc>
1               uid=ap8040,ou=employees,dc=<our dc>
1               uid=asr5,ou=employees,dc=<our dc>
1               uid=belzberg,ou=employees,dc=<our dc>


----- Top 20 Search Filters -----

Number of Unique Search Filters: 30968

28016           (objectclass=*)
1652            (cn=bill fisher)
504             (&(objectclass=inetorgperson))
55              (cn=eldap3*)
55              (cn=eldap5*)
55              (cn=eldap4*)
55              (cn=eldap2*)
6               (&(objectclass=groupofnames)(member=uid=alexnam,ou=employees,dc=<our dc>))
5               (&(objectclass=groupofnames)(member=uid=ehannah,ou=employees,dc=<our dc>))
5               (&(objectclass=groupofnames)(member=uid=priyanth,ou=employees,dc=<our dc>))
5               (&(objectclass=groupofnames)(member=uid=arsuther,ou=employees,dc=<our dc>))
4               (&(objectclass=groupofnames)(member=uid=ydeng,ou=employees,dc=<our dc>))
4               (&(objectclass=inetorgperson)(ubceducwlloginkey=<login key 1>))
4               (&(objectclass=groupofnames)(member=uid=elyoung,ou=employees,dc=<our dc>))
4               (&(objectclass=groupofnames)(member=uid=zanottic,ou=employees,dc=<our dc>))
4               (&(uid=devlin11))
4               (&(objectclass=groupofnames)(member=uid=huynhh,ou=employees,dc=<our dc>))
4               (&(objectclass=inetorgperson)(ubceducwlloginkey=<login key 2>))
4               (&(objectclass=groupofnames)(member=uid=lillaroy,ou=employees,dc=<our dc>))
4               (&(objectclass=groupofnames)(member=uid=rodsprus,ou=employees,dc=<our dc>))


----- Top 20 Most Frequent etimes -----

219090          etime=0
8202            etime=1
20              etime=2
1               etime=147
1               etime=135


----- Top 20 Longest etimes -----

etime=147       1
etime=135       1
etime=2         20
etime=1         8202
etime=0         219090


----- Top 20 Largest nentries -----

nentries=100                  502
nentries=34                     1
nentries=27                     1
nentries=26                     1
nentries=7                      3
nentries=6                      9
nentries=5                     85
nentries=4                    334
nentries=3                   1957
nentries=2                   6701
nentries=1                  85038
nentries=0                  14420


----- Top 20 Most returned nentries -----

85038           nentries=1
14420           nentries=0
6701            nentries=2
1957            nentries=3
502             nentries=100
334             nentries=4
85              nentries=5
9               nentries=6
3               nentries=7
1               nentries=26
1               nentries=27
1               nentries=34



----- Extended Operations -----

2185        2.16.840.1.113730.3.5.12     DS90 Start Replication Request
2185        2.16.840.1.113730.3.5.5     End Replication Request (incremental update)


----- Top 20 Most Requested Attributes -----

78174       1.1
56799       o
28712       description
28712       cn
28712       nsAccountLock
28711       givenName
28711       ubcEduCwlPUID
28711       uid
28711       displayName
28711       employeeNumber
28711       mail
28711       objectClass
28711       sn
28400       ou
28400       passwordRetryCount
28400       distinguishedName
28399       businessCategory
28399       employeeType
28399       facsimileTelephoneNumber
28399       groups


----- Recommendations -----

 1.  You have unindexed searches, this can be caused from a search on an unindexed attribute, or your returned results exceeded the allidsthreshold.  Unindexed searches are not recommended. To refuse unindexed searches, switch 'nsslapd-require-index' to 'on' under your database entry (e.g. cn=UserRoot,cn=ldbm database,cn=plugins,cn=config).

 2.  You have unindexed components, this can be caused from a search on an unindexed attribute, or your returned results exceeded the allidsthreshold.  Unindexed components are not recommended. To refuse unindexed searches, switch 'nsslapd-require-index' to 'on' under your database entry (e.g. cn=UserRoot,cn=ldbm database,cn=plugins,cn=config).

Cleaning up temp files...
Done.







From: Mark Reynolds <mareynol@xxxxxxxxxx>
Reply-To: "mreynolds@xxxxxxxxxx" <mreynolds@xxxxxxxxxx>
Date: Tuesday, December 9, 2014 at 7:25 AM
To: "389-users@xxxxxxxxxxxxxxxxxxxxxxx" <389-users@xxxxxxxxxxxxxxxxxxxxxxx>, Trevor Fong <trevor.fong@xxxxxx>
Subject: Re: 389-ds and Multi CPU's


On 12/08/2014 05:43 PM, Fong, Trevor wrote:
Hi Mike,
It's Mark :-)  I get that a lot for some reason.

Thanks for the reply.  The typical result of the result is:

[08/Dec/2014:07:08:04 -0800] conn=130262 op=1 RESULT err=0 tag=101 nentries=5 etime=0
Yeah this looks fine.

There are no notes=A/notes=U in the results.
Do you mean in the entire access log, or just for that search?

Can you run logconv.pl and post the results?   "logconv.pl -V <access logs>"

Thanks Trevor,
Mark
Objectclass and member are both indexed.
There were 30,000-odd searches on conn=130262, which took 34 mins.

Thanks,
Trev
 





From: Mark Reynolds <mareynol@xxxxxxxxxx>
Reply-To: "mreynolds@xxxxxxxxxx" <mreynolds@xxxxxxxxxx>
Date: Monday, December 8, 2014 at 11:29 AM
To: "389-users@xxxxxxxxxxxxxxxxxxxxxxx" <389-users@xxxxxxxxxxxxxxxxxxxxxxx>, Trevor Fong <trevor.fong@xxxxxx>
Subject: Re: 389-ds and Multi CPU's


On 12/08/2014 02:08 PM, Fong, Trevor wrote:
Hi Everyone,

We’ve inherited a 389-ds system (1.2.11.15-48.el6_6) that is running on a VM provisioned with a single CPU.  We have been experiencing high CPU with a client that connects with a single connection, and then runs large amounts of queries of the form:

SRCH base="ou=GROUPS,dc=<our dc>" scope=2 filter="(&(objectClass=groupOfNames)(member=uid=<loginname>,ou=EMPLOYEES,<our dc>))" attrs=“1.1"
Trevor,

From the access log, what is the result of this search?  etime?  It there a notes=U/notes=A in the result?  It could be an unindexed search which would cause the high CPU. 

Thanks,
Mark

We’re wondering if adding extra CPU’s to the vm will make things better.  The original engineer noted that at the time of implementation, he had come across some notes that indicated that the underlying process was single threaded and adding extra CPU’s would not make any improvement; in fact, on heavily loaded vm infrastructure like ours, may make things worse as the the vm would have to wait for the CPU to become available.  Is this still true?

Thanks a lot,
Trev


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