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[Core-YSQL] Performance on graviton instances is slower possible due to "__pread call from yb::PosixRandomAccessFile::Read" #11547

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sonalsagarwal opened this issue Feb 21, 2022 · 1 comment
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[Core-YSQL] Performance on graviton instances is slower possible due to "__pread call from yb::PosixRandomAccessFile::Read" #11547

sonalsagarwal opened this issue Feb 21, 2022 · 1 comment
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area/ysql Yugabyte SQL (YSQL) kind/bug This issue is a bug priority/medium Medium priority issue

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@sonalsagarwal
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sonalsagarwal commented Feb 21, 2022 •
edited by yugabyte-ci
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Jira Link: DB-1161

Description

Sysbench read workload was run on graviton c6g instances, and the performance was not good.
From analysis of the flame graphs of teh runs, it seems __pread call from yb::PosixRandomAccessFile::Read taking lot of time on c6g when compared against c5 flame graph.
This is also reflected in our disk usage pattern. The disk utilization on c6g instances is a higher.
@sonalsagarwal sonalsagarwal added the area/ysql Yugabyte SQL (YSQL) label Feb 21, 2022
@snyk-bot snyk-bot mentioned this issue May 13, 2022
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@yugabyte-ci yugabyte-ci added kind/bug This issue is a bug priority/medium Medium priority issue labels Jun 8, 2022
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This was triaged to disk block size options

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