ldbadd --no-sync implications?

Michael Wood esiotrot at gmail.com
Thu Mar 3 08:32:03 MST 2011


By the way, adding batches of 1000 users to the group takes longer and long.

e.g. if I have LDIF files like this:

dn: CN=TestGroup,CN=Users,DC=example,DC=com
changetype: modify
-
add: member
member: CN=one,CN=Users,DC=example,DC=com
-
add: member
member: CN=two,CN=Users,DC=example,DC=com
-
add: member
member: CN=three,CN=Users,DC=example,DC=com
-
add: member
member: CN=four,CN=Users,DC=example,DC=com
-

with 1000 users in each, and then run that through ldbmodify --nosync,
I get the following times.  As you can see, each batch of 1000 users
gets slower and slower:

batch-csv.ac-group.ldif
Modified 1 records with 0 failures

real	0m48.696s
user	0m48.370s
sys	0m0.230s
batch-csv.ad-group.ldif
Modified 1 records with 0 failures

real	1m8.228s
user	1m7.520s
sys	0m0.570s
batch-csv.ae-group.ldif
Modified 1 records with 0 failures

real	1m27.377s
user	1m26.400s
sys	0m0.770s
batch-csv.af-group.ldif
Modified 1 records with 0 failures

real	1m45.989s
user	1m44.840s
sys	0m0.940s
batch-csv.ag-group.ldif
Modified 1 records with 0 failures

real	2m5.087s
user	2m3.410s
sys	0m1.430s
batch-csv.ah-group.ldif
Modified 1 records with 0 failures

real	2m24.346s
user	2m22.380s
sys	0m1.680s
batch-csv.ai-group.ldif
Modified 1 records with 0 failures

real	2m43.766s
user	2m41.650s
sys	0m1.790s
batch-csv.aj-group.ldif
Modified 1 records with 0 failures

real	3m4.729s
user	3m1.320s
sys	0m2.180s
batch-csv.ak-group.ldif
Modified 1 records with 0 failures

real	3m20.968s
user	3m18.380s
sys	0m2.160s
batch-csv.al-group.ldif
Modified 1 records with 0 failures

real	3m41.077s
user	3m38.090s
sys	0m2.440s
batch-csv.am-group.ldif
Modified 1 records with 0 failures

real	4m1.068s
user	3m57.670s
sys	0m2.920s
batch-csv.an-group.ldif
Modified 1 records with 0 failures

real	4m22.281s
user	4m18.680s
sys	0m3.080s
batch-csv.ao-group.ldif
ERR: (Attribute or value exists) "Attribute member already exists for
target GUID c0a7f847-ee36-4012-93c0-aa4fcddaa883" on DN
CN=DoctorX,CN=Users,DC=bluebird,DC=co,DC=za
Modified 0 records with 1 failures

real	3m1.475s
user	2m58.980s
sys	0m2.130s
batch-csv.ap-group.ldif
Modified 1 records with 0 failures

real	4m36.351s
user	4m32.730s
sys	0m3.070s
batch-csv.aq-group.ldif
Modified 1 records with 0 failures

real	4m57.284s
user	4m53.120s
sys	0m3.570s
batch-csv.ar-group.ldif
Modified 1 records with 0 failures

real	5m16.023s
user	5m11.330s
sys	0m4.070s
batch-csv.as-group.ldif
Modified 1 records with 0 failures

real	5m36.582s
user	5m32.250s
sys	0m3.670s
batch-csv.at-group.ldif
Modified 1 records with 0 failures

real	5m53.471s
user	5m48.260s
sys	0m4.510s
batch-csv.au-group.ldif
Modified 1 records with 0 failures

real	6m14.907s
user	6m9.950s
sys	0m4.200s
batch-csv.av-group.ldif
Modified 1 records with 0 failures

real	6m35.017s
user	6m29.320s
sys	0m4.910s
batch-csv.aw-group.ldif
Modified 1 records with 0 failures

real	6m57.414s
user	6m52.090s
sys	0m4.490s
batch-csv.ax-group.ldif
Modified 1 records with 0 failures

real	7m19.361s
user	7m13.370s
sys	0m5.120s
batch-csv.ay-group.ldif
Modified 1 records with 0 failures

real	7m36.068s
user	7m29.780s
sys	0m5.380s
batch-csv.az-group.ldif
Modified 1 records with 0 failures

real	7m48.481s
user	7m42.110s
sys	0m5.450s

-- 
Michael Wood <michael at radiology.co.za>
Team Leader, Blackbird Project
IntelMS (Pty) Ltd.
www.radiology.co.za


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