TEXT/BLOB fields in MySQL

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Eduardo Schoedler

12 Dec 2014 12 Dec '14

9:17 p.m.

Hi,

Any chance to change text/blob fields to another type in MySQL?

# ./tuning-primer.sh

TEMP TABLES Current max_heap_table_size = 512 M Current tmp_table_size = 512 M Of 17956 temp tables, 29% were created on disk Perhaps you should increase your tmp_table_size and/or max_heap_table_size to reduce the number of disk-based temporary tables

*Note! BLOB and TEXT columns are not allow in memory tables.If you are using these columns raising these values might not impact yourratio of on disk temp tables.*

Thanks.

-- Eduardo Schoedler

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Adam Armstrong

16 Dec 16 Dec

7 a.m.

Which fields are those? :)

------ Original Message ------ From: "Eduardo Schoedler" listas@esds.com.br To: "Observium Network Observation System" observium@observium.org Sent: 12/12/2014 2:17:14 PM Subject: [Observium] TEXT/BLOB fields in MySQL

...

Hi,

Any chance to change text/blob fields to another type in MySQL?

# ./tuning-primer.sh

TEMP TABLES Current max_heap_table_size = 512 M Current tmp_table_size = 512 M Of 17956 temp tables, 29% were created on disk Perhaps you should increase your tmp_table_size and/or max_heap_table_size to reduce the number of disk-based temporary tables

Note! BLOB and TEXT columns are not allow in memory tables. If you are using these columns raising these values might not impact your ratio of on disk temp tables.

Thanks.

-- Eduardo Schoedler

Eduardo Schoedler

2:36 p.m.

All these? ;)

Regards!

2014-12-16 4:00 GMT-02:00 Adam Armstrong adama@memetic.org:

...

Which fields are those? :)

------ Original Message ------ From: "Eduardo Schoedler" listas@esds.com.br To: "Observium Network Observation System" observium@observium.org Sent: 12/12/2014 2:17:14 PM Subject: [Observium] TEXT/BLOB fields in MySQL

Hi,

Any chance to change text/blob fields to another type in MySQL?

# ./tuning-primer.sh

TEMP TABLES Current max_heap_table_size = 512 M Current tmp_table_size = 512 M Of 17956 temp tables, 29% were created on disk Perhaps you should increase your tmp_table_size and/or max_heap_table_size to reduce the number of disk-based temporary tables

*Note! BLOB and TEXT columns are not allow in memory tables.If you are using these columns raising these values might not impact yourratio of on disk temp tables.*

Thanks.

-- Eduardo Schoedler

observium mailing list observium@observium.org http://postman.memetic.org/cgi-bin/mailman/listinfo/observium

-- Eduardo Schoedler

Tom Laermans

2:38 p.m.

But those are not memory tables...

On 12/16/2014 02:36 PM, Eduardo Schoedler wrote:

...

All these? ;)

mysql> SELECT TABLE_SCHEMA, TABLE_NAME, COLUMN_NAME, DATA_TYPE FROM columns WHERE DATA_TYPE IN ('text', 'blob') AND TABLE_SCHEMA = 'observium'; +--------------+------------------+-----------------------+-----------+ | TABLE_SCHEMA | TABLE_NAME | COLUMN_NAME | DATA_TYPE | +--------------+------------------+-----------------------+-----------+ | observium | alert_assoc | device_attribs | text | | observium | alert_assoc | entity_attribs | text | | observium | alert_log | message | text | | observium | alert_tests | alert_message | text | | observium | alert_tests | conditions | text | | observium | alerts | message | text | | observium | authlog | user | text | | observium | authlog | address | text | | observium | authlog | result | text | | observium | bgpPeers | bgpPeerState | text | | observium | bgpPeers | bgpPeerAdminStatus | text | | observium | bill_history | bill_type | text | | observium | bills | bill_name | text | | observium | bills | bill_type | text | | observium | config | config_value | text | | observium | devices | sysDescr | text | | observium | devices | sysContact | text | | observium | devices | version | text | | observium | devices | hardware | text | | observium | devices | features | text | | observium | devices | location | text | | observium | devices | device_state | text | | observium | devices_attribs | attrib_value | text | | observium | eigrp_ports | eigrp_authmode | text | | observium | entPhysical | entPhysicalDescr | text | | observium | entPhysical | entPhysicalClass | text | | observium | entPhysical | entPhysicalName | text | | observium | entPhysical | entPhysicalModelName | text | | observium | entPhysical | entPhysicalVendorType | text | | observium | entPhysical | entPhysicalSerialNum | text | | observium | entPhysical | entPhysicalMfgName | text | | observium | eventlog | message | text | | observium | groups_assoc | device_attribs | text | | observium | groups_assoc | entity_attribs | text | | observium | hrDevice | hrDeviceDescr | text | | observium | hrDevice | hrDeviceType | text | | observium | hrDevice | hrDeviceStatus | text | | observium | munin_plugins | mplug_info | text | | observium | munin_plugins_ds | ds_extinfo | text | | observium | munin_plugins_ds | ds_sum | text | | observium | munin_plugins_ds | ds_stack | text | | observium | services | service_ip | text | | observium | services | service_desc | text | | observium | services | service_param | text | | observium | services | service_message | text | | observium | storage | storage_descr | text | | observium | syslog | msg | text | | observium | users | user_options | text | | observium | vrfs | mplsVpnVrfDescription | text | +--------------+------------------+-----------------------+-----------+ 49 rows in set (0.04 sec)

Regards!

2014-12-16 4:00 GMT-02:00 Adam Armstrong <adama@memetic.org mailto:adama@memetic.org>:
Which fields are those? :)
------ Original Message ------
From: "Eduardo Schoedler" <listas@esds.com.br
<mailto:listas@esds.com.br>>
To: "Observium Network Observation System"
<observium@observium.org <mailto:observium@observium.org>>
Sent: 12/12/2014 2:17:14 PM
Subject: [Observium] TEXT/BLOB fields in MySQL
...
Hi,

Any chance to change text/blob fields to another type in MySQL?

# ./tuning-primer.sh

TEMP TABLES
Current max_heap_table_size = 512 M
Current tmp_table_size = 512 M
Of 17956 temp tables, 29% were created on disk
Perhaps you should increase your tmp_table_size and/or
max_heap_table_size
to reduce the number of disk-based temporary tables

*Note! BLOB and TEXT columns are not allow in memory tables.
If you are using these columns raising these values might not
impact your
ratio of on disk temp tables.
*

Thanks.

-- 
Eduardo Schoedler
_______________________________________________
observium mailing list
observium@observium.org <mailto:observium@observium.org>
http://postman.memetic.org/cgi-bin/mailman/listinfo/observium
-- Eduardo Schoedler

observium mailing list observium@observium.org http://postman.memetic.org/cgi-bin/mailman/listinfo/observium

Eduardo Schoedler

2:40 p.m.

Exactly! Because of text/blob fields, they can not do temp tables in memory... and do disk-based temp tables.

2014-12-16 11:38 GMT-02:00 Tom Laermans tom.laermans@powersource.cx:

...

But those are not memory tables...

On 12/16/2014 02:36 PM, Eduardo Schoedler wrote:

All these? ;)

mysql> SELECT TABLE_SCHEMA, TABLE_NAME, COLUMN_NAME, DATA_TYPE FROM columns WHERE DATA_TYPE IN ('text', 'blob') AND TABLE_SCHEMA = 'observium'; +--------------+------------------+-----------------------+-----------+ | TABLE_SCHEMA | TABLE_NAME | COLUMN_NAME | DATA_TYPE | +--------------+------------------+-----------------------+-----------+ | observium | alert_assoc | device_attribs | text | | observium | alert_assoc | entity_attribs | text | | observium | alert_log | message | text | | observium | alert_tests | alert_message | text | | observium | alert_tests | conditions | text | | observium | alerts | message | text | | observium | authlog | user | text | | observium | authlog | address | text | | observium | authlog | result | text | | observium | bgpPeers | bgpPeerState | text | | observium | bgpPeers | bgpPeerAdminStatus | text | | observium | bill_history | bill_type | text | | observium | bills | bill_name | text | | observium | bills | bill_type | text | | observium | config | config_value | text | | observium | devices | sysDescr | text | | observium | devices | sysContact | text | | observium | devices | version | text | | observium | devices | hardware | text | | observium | devices | features | text | | observium | devices | location | text | | observium | devices | device_state | text | | observium | devices_attribs | attrib_value | text | | observium | eigrp_ports | eigrp_authmode | text | | observium | entPhysical | entPhysicalDescr | text | | observium | entPhysical | entPhysicalClass | text | | observium | entPhysical | entPhysicalName | text | | observium | entPhysical | entPhysicalModelName | text | | observium | entPhysical | entPhysicalVendorType | text | | observium | entPhysical | entPhysicalSerialNum | text | | observium | entPhysical | entPhysicalMfgName | text | | observium | eventlog | message | text | | observium | groups_assoc | device_attribs | text | | observium | groups_assoc | entity_attribs | text | | observium | hrDevice | hrDeviceDescr | text | | observium | hrDevice | hrDeviceType | text | | observium | hrDevice | hrDeviceStatus | text | | observium | munin_plugins | mplug_info | text | | observium | munin_plugins_ds | ds_extinfo | text | | observium | munin_plugins_ds | ds_sum | text | | observium | munin_plugins_ds | ds_stack | text | | observium | services | service_ip | text | | observium | services | service_desc | text | | observium | services | service_param | text | | observium | services | service_message | text | | observium | storage | storage_descr | text | | observium | syslog | msg | text | | observium | users | user_options | text | | observium | vrfs | mplsVpnVrfDescription | text | +--------------+------------------+-----------------------+-----------+ 49 rows in set (0.04 sec)

Regards!

2014-12-16 4:00 GMT-02:00 Adam Armstrong adama@memetic.org:

...
Which fields are those? :)

------ Original Message ------ From: "Eduardo Schoedler" listas@esds.com.br To: "Observium Network Observation System" observium@observium.org Sent: 12/12/2014 2:17:14 PM Subject: [Observium] TEXT/BLOB fields in MySQL

Hi,

Any chance to change text/blob fields to another type in MySQL?

# ./tuning-primer.sh

TEMP TABLES Current max_heap_table_size = 512 M Current tmp_table_size = 512 M Of 17956 temp tables, 29% were created on disk Perhaps you should increase your tmp_table_size and/or max_heap_table_size to reduce the number of disk-based temporary tables

*Note! BLOB and TEXT columns are not allow in memory tables. If you are using these columns raising these values might not impact your ratio of on disk temp tables. *

Thanks.

-- Eduardo Schoedler

observium mailing list observium@observium.org http://postman.memetic.org/cgi-bin/mailman/listinfo/observium

-- Eduardo Schoedler

observium mailing listobservium@observium.orghttp://postman.memetic.org/cgi-bin/mailman/listinfo/observium

observium mailing list observium@observium.org http://postman.memetic.org/cgi-bin/mailman/listinfo/observium

-- Eduardo Schoedler

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Adam Armstrong
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