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Hi!

In running Drizzle benches, I'm running into the following when running
readwrite sysbench tests on our machine:

2009-05-04 14:02:39,950 INFO: Running sysbench config
innodb_1000K_readwrite for concurrency at 2048 - iteration 0.
090504 14:03:41  InnoDB: Warning: cannot find a free slot for an undo
log. Do you have too
InnoDB: many active transactions running concurrently?

This only occurs when concurrent connections > 1024 (we run our benches
up to 2048 concurrent connections).

Is there an innodb server setting that I should change in order to get
around this problem?  Here is what I am using:

[drizzled]

# Options provided directly to the drizzled server
# when the server is started.

innodb_buffer_pool_size= 128M
innodb_log_file_size= 64M
innodb_log_buffer_size= 8M
innodb_thread_concurrency= 0
innodb_additional_mem_pool_size= 16M
table_open_cache= 4096
table_definition_cache= 4096

[sysbench]

# Options given to the sysbench program on every iteration

max-time= 60
max-requests= 0
test= oltp
drizzle-db= test
drizzle-port= 9306
drizzle-host= 127.0.0.1
drizzle-user= root
db-ps-mode= disable
db-driver= drizzle
drizzle-table-engine= innodb
oltp-read-only= off
oltp-table-size= 1000000

Any help is most appreciated! Thanks in advance!

Jay
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