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optimize by interpolation search

This commit is contained in:
Hongze Cheng 2022-12-02 14:04:24 +08:00
parent 644bba8e2b
commit 5b83fcc1fc
1 changed files with 2 additions and 1 deletions
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3
source/dnode/vnode/src/tsdb/tsdbUtil.c
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@ -1097,7 +1097,8 @@ void tBlockDataGetColData(SBlockData *pBlockData, int16_t cid, SColData **ppColD
int32_t ridx = pBlockData->nColData - 1;
while (lidx <= ridx) {
int32_t midx = (lidx + ridx) >> 2;
int32_t midx = lidx + (ridx - lidx) * (cid - pBlockData->aColData[lidx].cid) /
(pBlockData->aColData[ridx].cid - pBlockData->aColData[lidx].cid);
SColData *pColData = tBlockDataGetColDataByIdx(pBlockData, midx);
int32_t c = (pColData->cid == cid) ? 0 : ((pColData->cid > cid) ? 1 : -1);