Issues
- LP #1264267: Move fixed read ahead documentation from flexibility to performancePS-2054Resolved issue: PS-2054
- rds_exporter unreliable for large deploymentsPMM-12013Resolved issue: PMM-12013Nurlan Moldomurov
- Provide ability to enable -collect.detailed.stats_mysql_processlist in ProxySQL ExporterPMM-11556
- ProxySQL Active Frontend Connections graph is unusable with +10k clientsPMM-11555Resolved issue: PMM-11555Anton Bystrov
- PMM-Server monitoring 500+ nodes causes Templating error on multiple Dashboards, due to VM config defaultsPMM-10065Resolved issue: PMM-10065Anton Bystrov
LP #1264267: Move fixed read ahead documentation from flexibility to performance
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lpjirasynclpjirasync(Deactivated)Components
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Activity
lpjirasyncJanuary 22, 2018 at 6:51 PM
**Comment from Launchpad by: Hrvoje Matijakovic on: 05-02-2014 16:45:41
redirection request reported as WEB-535
lpjirasyncJanuary 22, 2018 at 6:51 PM
**Comment from Launchpad by: Alexey Kopytov on: 26-12-2013 11:27:04
This feature does not impact flexibility in 5.6, because it does NOT limit the min buffer size. Note that the description of the feature is different for 5.1/5.5 and 5.6 (the latter does not say anything about the buffer pool limitation).
Agree on moving the page itself to the performance section.
lpjirasyncJanuary 22, 2018 at 6:51 PM
**Comment from Launchpad by: Valerii Kravchuk on: 26-12-2013 10:57:13
Manual for 5.1 is also affected: http://www.percona.com/doc/percona-server/5.1/flexibility/buff_read_ahead_area.html
lpjirasyncJanuary 22, 2018 at 6:51 PM
**Comment from Launchpad by: Valerii Kravchuk on: 26-12-2013 10:56:26
Thank you for the documentation request.
**Reported in Launchpad by Jaime Crespo last update 05-02-2014 16:45:41
I would say that this change summary in Percona Server documentation:
http://www.percona.com/doc/percona-server/5.6/flexibility/buff_read_ahead_area.html
(also on 5.5)
actually does limit flexibility, not enhance it (it limits the min buffer size to at least 32MB). It doesn't improve IOPS, but it can save CPU. It should go to scalability, or, alternatively, to the performance section. We can make a 301 on documentation for support of incoming links or leave everything the same, just change the link on the top (summary of changes) page.
I am trying to make a sensible training material, hence the bug report.