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<DIV dir=ltr align=left><SPAN class=718312809-08032005><FONT face=Arial
color=#0000ff size=2>problem bude asi v te funkci min() - v tomhle pripade asi
SQL index nepouzije</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=718312809-08032005><FONT face=Arial
color=#0000ff size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=718312809-08032005><FONT face=Arial
color=#0000ff size=2>RadekCX</FONT></SPAN></DIV><BR>
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style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #0000ff 2px solid; MARGIN-RIGHT: 0px">
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<FONT face=Tahoma size=2><B>From:</B> hw-list-bounces@list.hw.cz
[mailto:hw-list-bounces@list.hw.cz] <B>On Behalf Of </B>Pavel
Novotný<BR><B>Sent:</B> Tuesday, March 08, 2005 10:21 AM<BR><B>To:</B>
hw-list@hw.cz<BR><B>Subject:</B> Castecne OT postgresql +
rychlost<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV><FONT face=Arial size=2><SPAN class=171020409-08032005>Tak jseme pred
rokem pustili sledovani provozniho stavu jisteho zarizeni, data se sbiraji a
ukladaji do Postgresql database 7.4.5 bezici na Linuxu. Pouzite PC neni zadny
high tech, ale bezne PC odpovidajici svymi parametry dobe
porizeni.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=171020409-08032005>Do databaze se
uklada cas mereni a 4 namerene hodnoty, k dnesnimu dni ma databaze cca 6
milionu radku a nemela by se jiz vice zvetsovat, protoze starsi zaznamy by se
mely zacit agregovat.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=171020409-08032005>Nejak se mi vsak
nezda rychlost prace s databazi, mam ji zindexovane podle casu a
presto napriklad SELECT min(time) ... trva tak
20-30s.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=171020409-08032005>Delam neco blbe,
je treba postgresu zvlast rici, ze ma pracovat s indexy nebo to je u takovych
drobecku normalni ?</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=171020409-08032005>Velikost adresare
s databazi je cca 1.2G .</SPAN></FONT></DIV>
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class=171020409-08032005></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN
class=171020409-08032005></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=171020409-08032005>Dekuji za
nakopnuti</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=171020409-08032005></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN
class=171020409-08032005></SPAN></FONT> </DIV>
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