I ran some speed tests against OpenLDAP REL_ENG_1_2 and found the
performance to be very good indeed.
The tests were performed with a Sparc 5 170mhz machine with a standard SCSI
4gb drive (SEAGATE-ST15230N-0638) and 256mb of memory as the LDAP server,
running Solaris 7.0 (2.7) and running no other tasks. The client machine is
a Dell PowerEdge 6300 with 2 Xeon 400mhz processors with a 1mb clock-speed
L2 cache, and 512mb of RAM, and a rather large RAID-5 array.
The database consists of a total of 18992 objects, 18986 in the ou=Users,
ou=People, o=cyberus.ca org. unit. The search patterns are all on DN
attribute (uid=) within the ou=Users org. unit. Three pattern files were
used for the search process. One was the first 1000 entries from the
database, the second all entries, and the third all entries from last to
first. The second and third search pattern lists were used for odd and even
clients in the 2nd test, respectively.
I ran two tests, one was just 1000 records, the 2nd was all 18986 search
patterns. The result of these two tests can be seen below.
The tests were performed using the Sun LDAP library using the Perl
Net-LDAPapi-2.42 (patched to support the SUN LDAP library). The test suite
consists of two parts: test-master.pl which dispatches and gathers data
from the children, and test.pl that runs the test. It requires the
Time::HiRes perl library for timing purposes.
Slapd tuning parameters:
schemacheck on
sizelimit 40000
loglevel 0
cachesize 10000
dbcachesize 2000000
## Number of clients
PRCli Rate Per Client
TR Total Requests
TPR Time Per Request (Average)
RPS Requests Per Second (Average)
RPST Requests Per Second Total (All Clients)
TT Total Time (Seconds)
## RPCli TR TPR RPS RPST TT
--- ----- ----- ------- --------- --------- -----
1 1000 1000 0.00900 111.11111 111.11111 9
2 1000 2000 0.01600 62.50000 125.00000 32
3 1000 3000 0.02300 43.47826 130.43478 69
4 1000 4000 0.03025 33.05785 132.23140 121
5 1000 5000 0.03720 26.88172 134.40860 186
6 1000 6000 0.04433 22.55809 135.34852 266
7 1000 7000 0.05171 19.33862 135.37033 362
8 1000 8000 0.05937 16.84352 134.74819 475
9 1000 9000 0.06633 15.07613 135.68521 597
10 1000 10000 0.07520 13.29787 132.97872 752
11 1000 11000 0.08236 12.14182 133.55998 906
12 1000 12000 0.08967 11.15200 133.82402 1076
13 1000 13000 0.09608 10.40799 135.30391 1249
14 1000 14000 0.10271 9.73615 136.30610 1438
15 1000 15000 0.10940 9.14077 137.11152 1641
## RPCli TR TPR RPS RPST TT
--- ----- ----- ------- --------- --------- -----
1 18992 18992 0.00769 130.03901 130.03901 146
2 18992 37984 0.01469 68.07352 136.14704 558
3 18992 56976 0.02175 45.97701 137.93103 1239
4 18992 75968 0.02924 34.19973 136.79891 2221
5 18992 94960 0.03688 27.11497 135.57484 3502
6 18992 113952 0.04374 22.86237 137.17421 4984
7 18992 132944 0.04977 20.09243 140.64698 6617
8 18992 151936 0.05787 17.28011 138.24088 8792
9 18992 170928 0.06615 15.11716 136.05442 11307
10 18992 189920 0.07400 13.51351 135.13514 14055
11 18992 208912 0.08413 11.88637 130.75003 17576
12 18992 227904 0.09215 10.85187 130.22246 21001
13 18992 246896 0.09994 10.00600 130.07805 24675
14 18992 265888 0.10733 9.31706 130.43883 28537
15 18992 284880 0.11550 8.65801 129.87013 32905
--
Roy Hooper
Sr. Systems Administrator
Cyberus Online Inc.
(613) 233-0068
> -----Original Message-----
> From: Kurt D. Zeilenga [mailto:Kurt@OpenLDAP.Org]
> Sent: Tuesday, February 02, 1999 6:03 PM
> To: Roy Hooper
> Subject: Re: bus fault under load
>
>
> Roy Hooper wrote:
> >
> > > 1.2beta2 (latest via AnonCVS) has additional protections to run
> > > under preeemptive threads.
> > > It's still not 100% preemptive thread safe, but it's a lot better
> > > than 1.1.
> >
> > Well, it ran 300k queries (15 clients, hammering the server {ick, load
> > average of 11}) without dying. Yay!
>
> Great! would love for you to post a summary of your finding to
> OpenLDAP-general. What was the query/sec?
>
> I have some ID list changes that should also help out... and all
> of this without thread pooling (we still spin up a new thread per
> LDAP operation).
>
> > Did you know Netscape wants around $200000.00 for 20k Users in the
> > directory?
>
> $10 per user. That's amazing.
>
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