Bug #59802 5.5 performance regressions
Submitted: 28 Jan 2011 18:53 Modified: 15 Oct 2012 14:16
Reporter: Matthew Lord Email Updates:
Status: Won't fix Impact on me:
None 
Category:MySQL Server Severity:S5 (Performance)
Version:5.5.9 OS:Any
Assigned to: CPU Architecture:Any

File: Maximum allowed size is 50MB.
Description:
Privacy:

If the data you need to attach is more than 50MB, you should create a compressed archive of the data, split it to 50MB chunks, and upload each of them as a separate attachment.

To split a large file:

[28 Jan 2011 18:57] Matthew Lord
google-pprof sample output

Attachment: google-pprof_samples.txt (text/plain), 54.85 KiB.

[28 Jan 2011 18:57] Matthew Lord
Script to create the test database, tables and data

Attachment: aNumberDB-tables.sql (, text), 11.23 KiB.

[28 Jan 2011 18:58] Matthew Lord
Test queries for use with mysqlslap

Attachment: aNumQueries.sql (, text), 240 bytes.

[28 Jan 2011 19:15] Matthew Lord
google tcmalloc heap profiler samples from the example results

Attachment: google-pprof_samples.txt (text/plain), 52.81 KiB.

[28 Jan 2011 19:31] Matthew Lord
pprof samples from last test

Attachment: google-pprof_samples.txt (text/plain), 52.55 KiB.

[28 Jan 2011 19:35] Matthew Lord
SPs for a secondary test

Attachment: aNumberDB-procs.sql (, text), 14.46 KiB.

[28 Jan 2011 19:35] Matthew Lord
a secondary mysqlslap test file

Attachment: call_P_aNum.sql (, text), 66 bytes.