Hello Kudu Jenkins,
I'd like you to reexamine a change. Please visit
http://gerrit.cloudera.org:8080/6480
to look at the new patch set (#3).
Change subject: write_transaction: allocate RowOp objects from the arena
......................................................................
write_transaction: allocate RowOp objects from the arena
This improves the memory locality of write transactions by making all of
the RowOps in a batch come from the transaction's arena. Additionally
this reduces contention on tcmalloc since the arena grabs memory in
bulk.
I didn't benchmark this before/after, but in various write stress
testing this made a bit of a difference in cache miss rates and CPU time
spent in RowOp code.
Change-Id: I8e7969423c057f9bf1169fe066819228c59ed269
---
M src/kudu/tablet/tablet.cc
M src/kudu/tablet/transactions/write_transaction.cc
M src/kudu/tablet/transactions/write_transaction.h
3 files changed, 19 insertions(+), 13 deletions(-)
git pull ssh://gerrit.cloudera.org:29418/kudu refs/changes/80/6480/3
--
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Gerrit-MessageType: newpatchset
Gerrit-Change-Id: I8e7969423c057f9bf1169fe066819228c59ed269
Gerrit-PatchSet: 3
Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-Owner: Todd Lipcon <[email protected]>
Gerrit-Reviewer: David Ribeiro Alves <[email protected]>
Gerrit-Reviewer: Kudu Jenkins
Gerrit-Reviewer: Todd Lipcon <[email protected]>
