Network Performance 216 Validating Disk I/O and Memory Bandwidth 216 To run the disk and stream tests 217 Initializing a Greenplum Database System 217 Overview 217 Initializing Greenplum Database 218 parameter. The default value is usually sufficient, and you should only raise or lower it if your tests demonstrate that query plans improve with the new target. For example, to raise the default statistics Database array. gpcheckperf starts a session on the specified hosts and runs the following performance tests: Network Performance (gpnetbench*) Disk I/O Performance (dd test) Memory Bandwidth (stream test)

Network Performance 424 Validating Disk I/O and Memory Bandwidth 425 To run the disk and stream tests 425 Initializing a Greenplum Database System 426 Overview 426 Initializing Greenplum Database 426 gpcheckperf utility was changed to ensure that the result set for the list of hosts displayed for network tests matches the results from earliear versions of the utility. Query Processing 33052 Adds materialized utility called buffer-size to help you customize the buffer size when running network bandwidth tests. 15402 Resolves a performance issue with issue with the gpexpand utility by having gpexpand skip

Network Performance 405 Validating Disk I/O and Memory Bandwidth 406 To run the disk and stream tests 406 Initializing a Greenplum Database System 407 Overview 407 Initializing Greenplum Database 407 gpcheckperf utility was changed to ensure that the result set for the list of hosts displayed for network tests matches the results from earliear versions of the utility. Query Processing VMware Greenplum 6 Documentation utility called buffer-size to help you customize the buffer size when running network bandwidth tests. 15402 Resolves a performance issue with issue with the gpexpand utility by having gpexpand skip

Network Performance 351 Validating Disk I/O and Memory Bandwidth 352 To run the disk and stream tests 352 Initializing a Greenplum Database System 352 Overview 353 Initializing Greenplum Database 353 try-catch statement. (Resolved by PR-13568.) n/a Adds additional GUC defaults for ICW mirrorless tests. (Resolved by PR-13563.) n/a Provides checks on fatal exit status and outputs file location for internal tables from query results. (Resolved by PR-13461.) n/a Backports part of recovery TAP tests that can be supported on Greenplum 6 and related TAP framework changes. (Resolved by PR-13375.)

Network Performance 430 Validating Disk I/O and Memory Bandwidth 431 To run the disk and stream tests 431 Initializing a Greenplum Database System 432 Overview 432 Initializing Greenplum Database 433 try-catch statement. (Resolved by PR-13568.) n/a Adds additional GUC defaults for ICW mirrorless tests. (Resolved by PR-13563.) n/a Provides checks on fatal exit status and outputs file location for internal tables from query results. (Resolved by PR-13461.) n/a Backports part of recovery TAP tests that can be supported on Greenplum 6 and related TAP VMware Greenplum 6 Documentation VMware, Inc

Network Performance 416 Validating Disk I/O and Memory Bandwidth 417 To run the disk and stream tests 417 Initializing a Greenplum Database System 417 Overview 418 Initializing Greenplum Database 418 try-catch statement. (Resolved by PR-13568.) n/a Adds additional GUC defaults for ICW mirrorless tests. (Resolved by PR-13563.) n/a Provides checks on fatal exit status and outputs file location for internal tables from query results. (Resolved by PR-13461.) n/a Backports part of recovery TAP tests that can be supported on Greenplum 6 and related TAP framework changes. (Resolved by PR-13375.)

Documentation VMware, Inc. 17 Validating Disk I/O and Memory Bandwidth 414 To run the disk and stream tests 414 Initializing a Greenplum Database System 415 Overview 415 Initializing Greenplum Database 415 try-catch statement. (Resolved by PR-13568.) n/a : Adds additional GUC defaults for ICW mirrorless tests. (Resolved by PR-13563.) n/a : Provides checks on fatal exit status and outputs file location for internal tables from query results. (Resolved by PR-13461.) n/a : Backports part of recovery TAP tests that can be supported on Greenplum 6 and related TAP framework changes. (Resolved by PR-13375.)

Network Performance 268 Validating Disk I/O and Memory Bandwidth 269 To run the disk and stream tests 269 Initializing a Greenplum Database System 270 Initializing a Greenplum Database System 0 Overview to decrease disk space usage and to improve performance of AO/AOCO operations. The acl and owner tests are no longer run by default when you invoke the gpcheckcat utility. You can choose to run one or issue where gpcheckcat ran slowly due to long-running acl and owner tests by removing these test suites from the default set of tests that are run. Release 6.19.0 Release Date: 2021-11-24 VMware Tanzu

Network Performance 266 Validating Disk I/O and Memory Bandwidth 266 To run the disk and stream tests 267 Initializing a Greenplum Database System 267 Overview 267 Initializing Greenplum Database 268 to decrease disk space usage and to improve performance of AO/AOCO operations. The acl and owner tests are no longer run by default when you invoke the gpcheckcat utility. You can choose to run one or issue where gpcheckcat ran slowly due to long-running acl and owner tests by removing these test suites from the default set of tests that are run. Release 6.19.0 Release Date: 2021-11-24 VMware Tanzu

Network Performance 260 Validating Disk I/O and Memory Bandwidth 261 To run the disk and stream tests 261 Initializing a Greenplum Database System 262 Initializing a Greenplum Database System 0 Overview utility now permits users to skip one or more tests, with the new -s option. In addition, the -R option now accepts a comma-separated list of of multiple tests to run. The Progress DataDirect JDBC Driver Database array. gpcheckperf starts a session on the specified hosts and runs the following performance tests: Network Performance (gpnetbench*) Disk I/O Performance (dd test) Memory Bandwidth (stream test)