HDDS-4095. Byteman script to debug HCFS performance #1311
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adoroszlai
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Aug 11, 2020
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Thanks @elek for the contribution. |
errose28
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* master: (28 commits) HDDS-4037. Incorrect container numberOfKeys and usedBytes in SCM after key deletion (apache#1295) HDDS-3232. Include the byteman scripts in the distribution tar file (apache#1309) HDDS-4095. Byteman script to debug HCFS performance (apache#1311) HDDS-4057. Failed acceptance test missing from bundle (apache#1283) HDDS-4040. [OFS] BasicRootedOzoneFileSystem to support batchDelete (apache#1286) HDDS-4061. Pending delete blocks are not always included in #BLOCKCOUNT metadata (apache#1288) HDDS-4067. Implement toString for OMTransactionInfo (apache#1300) HDDS-3878. Make OMHA serviceID optional if one (but only one) is defined in the config (apache#1149) HDDS-3833. Use Pipeline choose policy to choose pipeline from exist pipeline list (apache#1096) HDDS-3979. Make bufferSize configurable for stream copy (apache#1212) HDDS-4048. Show more information while SCM version info mismatch (apache#1278) HDDS-4078. Use HDDS InterfaceAudience/Stability annotations (apache#1302) HDDS-4034. Add Unit Test for HadoopNestedDirGenerator. (apache#1266) HDDS-4076. Translate CSI.md into Chinese (apache#1299) HDDS-4046. Extensible subcommands for CLI applications (apache#1276) HDDS-4051. Remove whitelist/blacklist terminology from Ozone (apache#1306) HDDS-4055. Cleanup GitHub workflow (apache#1282) HDDS-4042. Update documentation for the GA release (apache#1269) HDDS-4066. Add core-site.xml to intellij configuration (apache#1292) HDDS-4073. Remove leftover robot.robot (apache#1297) ...
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What changes were proposed in this pull request
Teragen with Ozone is reported to be slower with Ozone than Hdfs with some specific configuration.
To make it easier to compare different file system, we need an easy measurement on the same point (
FSDataOutputStream.write) to compare the time spent in that method with Hdfs/Ozone/other file systems.It can be done with a byteman instrumentation rule
What is the link to the Apache JIRA
https://issues.apache.org/jira/browse/HDDS-4095
How was this patch tested?
https://elek.github.io/ozone-notes/performance/20_teragen/
https://elek.github.io/ozone-notes/performance/19_hcfs/
Both tests used this btm file. FS usage was reported on the stdout:
For example: