Managing Indexes378 Netscape Directory Server Administrator’s Guide • August 2002Symptoms of an Inappropriate All IDs ThresholdValueWhen your All IDs Threshold is set incorrectly, you will see poor searchperformance. However, poor search performance can be caused by other factors.For example:• Your users are performing a lot of searches for which you are not maintainingan index.• Your database cache size and entry cache size may be set incorrectly. SeeChapter 14, “Tuning Directory Server Performance” for more information.Carefully examine these possibilities first before changing your All IDs Thresholdvalue.If you think that your server is suffering from an All IDs Threshold that is too low,look in your access log. See Chapter 12, “Monitoring Server and DatabaseActivity.” Any searches that resulted in all entry IDs being returned will containthe notes=U flag. The notes=U flag will be returned for:• Searches for which you are not maintaining an index• Searches for which an ID list is not maintained because the All IDs Thresholdvalue has been reached for that index keyTo determine whether the search result belongs to a search that should have beenindexed, you have to match the conn and op values from the RESULT line to aprevious SRCH line in your access log file. The SRCH line will show the searchfilter that was used for the search request. If you have an index for the specifiedsearch filter, then the notes=U flag results from the All IDs Threshold value beingreached for the index key. For example, the access log looks as follows:[24/July/1998:15:12:20 -0800] conn=2 op=1 SRCH base="o=example.com"scope=0 filter="(cn=James)”[24/July/1998:15:12:20 -0800] conn=2 op=1 RESULT err=0 tag=101nentries=10000 notes=UThe presence of the notes=U flag indicates that the All IDs Threshold has beenreached for the cn attribute index.
