MySQL Bugs: #74325: updates to indexed column much slower in 5.7.5

Bug #74325	updates to indexed column much slower in 5.7.5
Submitted:	10 Oct 2014 19:26	Modified:	22 May 2015 13:02
Reporter:	Mark Callaghan	Email Updates:
Status:	Closed	Impact on me:	None
Category:	MySQL Server: InnoDB storage engine	Severity:	S5 (Performance)
Version:	5.7.5	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:

On *nix platforms use the split command e.g. split -b 50MB <my_large_archive> <my_split_archive_prefix>
On windows use WinZip or a similar utility to split the large file

output from hierarchical linux perf for 5.7.5

Attachment: gperf.575 (application/octet-stream, text), 2.53 MiB.

output from flat linux perf for 5.7.5

Attachment: fperf.575 (application/octet-stream, text), 411.65 KiB.

output from hierarchical linux perf for 5.6.21

Attachment: gperf.5621 (application/octet-stream, text), 1.17 MiB.

output from flat linux perf for 5.6.21

Attachment: fperf.5621 (application/octet-stream, text), 248.04 KiB.

difference in SHOW GLOBAL VARIABLES between 5.6.21 and 5.7.5

Attachment: diff.sgv (application/octet-stream, text), 3.12 KiB.

create file for mysqlslap

Attachment: iddl.sql (application/octet-stream, text), 15.46 KiB.