[Sqlrelay-discussion] the efficiency of sqlrelay

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hi,all:  why sqlrelay query a intricate sql will so slow ?the same sql query :   php-sqlrelay:0.16688680648804s   php-oci func:0.046548843383789s    my PC:intel c4 2.4 with 512rammy OS:rh linux 9oracle 9iapache 2php4.4  when i try to user php with sqlrelay link this: select i.P_PRODUCTNAME as P_PRODUCTNAME , i.p_companyid , i.p_id as p_id , i.p_type , to_char( I.P_CREATETIME, 'yy-mm-dd hh24:mi:ss') as createtime , i.p_user as user_name , to_char( I.P_CHECKTIME , 'yy-mm-dd hh24:mi:ss') as checktime , to_char( I.p_lastupdatetime, 'yy-mm-dd hh24:mi:ss') as updatetime , i.p_admin , i.P_STATUS as sta , l.g_languagename , l.g_id , i.p_productimage from c_product i , g_language l where l.g_id=i.p_languageid and i.p_languageid=1 and I.P_CREATETIME>=to_date('2006-08-13 00:00:00','YYYY-MM-DD HH24:MI:SS') and I.P_CREATETIME<=to_date('2007-08-13 23:59:59','YYYY-MM-DD HH24:MI:SS') and i.p_productimage>0 order by I.P_CREATETIME desc the timer tell me:conn time: 0.00015997886657715
prase time: 0.16688680648804
disconn time: 0.00068283081054688
all time: 0.16797995567322 but,when i try php self oci functions to query the same sql:conn time: 0.046813011169434
prase time: 0.046548843383789
disconn time: 0.00010800361633301
all time: 0.093719959259033 and i try php with sqlrelay agein:select a_admin from g_admin the timer tell me:conn time: 0.00015783309936523
prase time: 0.014791011810303
disconn time: 0.00018692016601562
all time: 0.015383958816528 and i try php self oci function:select a_admin from g_admin the timer tell me:conn time: 0.048692941665649
prase time: 0.0018470287322998
disconn time: 9.1075897216797E-05
all time: 0.050878047943115  my sqlrelay.conf:<?xml version="1.0"?>
<!DOCTYPE instances SYSTEM "sqlrelay.dtd">
<instances>        <instance id="oracletest" port="9000" socket="/tmp/oracletest.socket" dbase="oracle8" connections="10" maxconnections="100" maxqueuelength="5" growby="2" ttl="60" endofsession="commit" sessiontimeout="600" runasuser="nobody" runasgroup="nobody" cursors="5" authtier="listener" handoff="pass" debug="none">
                <users>
                        <user user="oracletest" password="oracletest"/>
                </users>
                <connections>
                        <connection connectionid="oracletest" string="user=bigfish_test;password=bigfish_test;oracle_sid=bigfish;oracle_home=/opt/oracle/product/9i2" metric="1"/>
                </connections>
        </instance></instances>