Hi,

Since we upgraded from MySql 3.20 to 4.1 innodb seems to have become slower.

I'd like to understand the innodb status a bit better.

Here is a the slow innodb transaction

---TRANSACTION 0 2599083795, ACTIVE 72659 sec, process no 12324, OS thread
id 1138606116 estimating records in index range
mysql tables in use 1, locked 1
1527743 lock struct(s), heap size 127790400, undo log entries 127362260
MySQL thread id 8885936, query id 78269607 10.168.80.166 web init
delete from negotiated_classes_cache where id=110495925522553001
Trx read view will not see trx with id >= 0 2599083796, sees < 0 2599083791

What exactly does this mean ?

And why would this query take so long ?

In this table Id is the primary key.

The machine that this is running on is a Dell quad Xeon and the data is
stored on a SAN.
The machine is not showing high load at all.

I'd be grateful for your advice.
Please let me know if I should provide any more information.

Regards,

Marvin Wright
Flights Developer
Lastminute.com
[EMAIL PROTECTED]
+44 (0) 207 802 4543



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