wesleydeng has uploaded a new patch set (#7). ( http://gerrit.cloudera.org:8080/16719 )
Change subject: IMPALA-10323: use gutil to cast int to string ...................................................................... IMPALA-10323: use gutil to cast int to string Using gutil instead of lexical_cast when casting int type value to string, performance can be improved significantly in multi-thread mode. In contrast, performance using lexical_cast decreased seriously in multi-thread mode. For example: when mt_dop=8, this change can get 20x performance improvement; when mt_dop=0, this change can get 2x performance improvement; Change-Id: Ief1d6b2c2cb5961c1d6cee1b0eac86ab61509768 --- M be/src/exprs/cast-functions-ir.cc 1 file changed, 34 insertions(+), 16 deletions(-) git pull ssh://gerrit.cloudera.org:29418/Impala-ASF refs/changes/19/16719/7 -- To view, visit http://gerrit.cloudera.org:8080/16719 To unsubscribe, visit http://gerrit.cloudera.org:8080/settings Gerrit-Project: Impala-ASF Gerrit-Branch: master Gerrit-MessageType: newpatchset Gerrit-Change-Id: Ief1d6b2c2cb5961c1d6cee1b0eac86ab61509768 Gerrit-Change-Number: 16719 Gerrit-PatchSet: 7 Gerrit-Owner: wesleydeng <[email protected]> Gerrit-Reviewer: Csaba Ringhofer <[email protected]> Gerrit-Reviewer: Gabor Kaszab <[email protected]> Gerrit-Reviewer: Impala Public Jenkins <[email protected]> Gerrit-Reviewer: Qifan Chen <[email protected]> Gerrit-Reviewer: Tim Armstrong <[email protected]> Gerrit-Reviewer: abeltian <[email protected]> Gerrit-Reviewer: wesleydeng <[email protected]>
