Hi I know that this maybe is not FreeRadius related question... I have some problems with freeradius and mysql as a database. radacct table is InnoDB and update queries (interim-updates) are terrible slow (10 - 50 sec). Interim-updates are triggered every 8 minutes so it isn't under heavy load. (max 500 users online @ same time) After I wrote a small benchmark script for testing this kind of queries (10 000 queries "UPDATE radacct SET ... " with random integer values for acctsessiontime, acctinputoctets and acctoutputoctets) I can't reproduce this problem. My script takes 10 000 random rows from radacct table (table has almost 600 000 rows) and it is finished in 130-180 seconds (executed 5 times and all results are between 130 and 180 seconds). That means 0,013-0,018s/query (average) Slow query log is empty after this benchm. script. I checked radacct table later and I have exaclty 10 000 updated rows so the script is OK. Any ideas how to trace this problem ? FreeRadius is 2.1.6 and the same problem I had with FR1.1.7 and FR2.1.3