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Set query node thread pool size in milvus.yaml (#23286)

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Signed-off-by: cqy123456 <qianya.cheng@zilliz.com>
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cqy123456 2023-04-16 22:44:29 -04:00 committed by GitHub
parent 3e33954f9e
commit 7ff6a3a246
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6 changed files with 33 additions and 5 deletions
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4
configs/milvus.yaml
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@ -201,6 +201,10 @@ queryNode:
stats:
publishInterval: 1000 # Interval for querynode to report node information (milliseconds)
segcore:
knowhereThreadPoolNumRatio: 4
# Use more threads to make better use of SSD throughput in disk index.
# This parameter is only useful when enable-disk = true.
# And this value should be a number greater than 1 and less than 32.
chunkRows: 1024 # The number of vectors in a chunk.
smallIndex:
nlist: 128 # small index nlist, recommend to set sqrt(chunkRows), must smaller than chunkRows/8

2
internal/core/src/segcore/segcore_init_c.cpp
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@ -43,7 +43,7 @@ SegcoreSetNprobe(const int64_t value) {
}
extern "C" void
SegcoreSetThreadPoolNum(const uint32_t num_threads) {
SegcoreSetKnowhereThreadPoolNum(const uint32_t num_threads) {
milvus::config::KnowhereInitThreadPool(num_threads);
}

2
internal/core/src/segcore/segcore_init_c.h
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@ -32,7 +32,7 @@ char*
SegcoreSetSimdType(const char*);
void
SegcoreSetThreadPoolNum(const uint32_t num_threads);
SegcoreSetKnowhereThreadPoolNum(const uint32_t num_threads);
#ifdef __cplusplus
}

3
internal/querynodev2/server.go
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@ -182,6 +182,9 @@ func (node *QueryNode) InitSegcore() {
cChunkRows := C.int64_t(paramtable.Get().QueryNodeCfg.ChunkRows.GetAsInt64())
C.SegcoreSetChunkRows(cChunkRows)
cKnowhereThreadPoolSize := C.uint32_t(paramtable.Get().QueryNodeCfg.KnowhereThreadPoolSize.GetAsUint32())
C.SegcoreSetKnowhereThreadPoolNum(cKnowhereThreadPoolSize)
nlist := C.int64_t(paramtable.Get().QueryNodeCfg.SmallIndexNlist.GetAsInt64())
C.SegcoreSetNlist(nlist)

26
pkg/util/paramtable/component_param.go
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@ -1367,9 +1367,10 @@ type queryNodeConfig struct {
StatsPublishInterval ParamItem `refreshable:"true"`
// segcore
ChunkRows ParamItem `refreshable:"false"`
SmallIndexNlist ParamItem `refreshable:"false"`
SmallIndexNProbe ParamItem `refreshable:"false"`
KnowhereThreadPoolSize ParamItem `refreshable:"false"`
ChunkRows ParamItem `refreshable:"false"`
SmallIndexNlist ParamItem `refreshable:"false"`
SmallIndexNProbe ParamItem `refreshable:"false"`
// memory limit
LoadMemoryUsageFactor ParamItem `refreshable:"true"`
@ -1442,6 +1443,25 @@ func (p *queryNodeConfig) init(base *BaseTable) {
}
p.StatsPublishInterval.Init(base.mgr)
p.KnowhereThreadPoolSize = ParamItem{
Key: "queryNode.segcore.knowhereThreadPoolNumRatio",
Version: "2.0.0",
DefaultValue: "4",
Formatter: func(v string) string {
factor := getAsInt64(v)
if factor <= 0 || !p.EnableDisk.GetAsBool() {
factor = 1
} else if factor > 32 {
factor = 32
}
knowhereThreadPoolSize := uint32(runtime.GOMAXPROCS(0)) * uint32(factor)
return strconv.FormatUint(uint64(knowhereThreadPoolSize), 10)
},
Doc: "The number of threads in knowhere's thread pool. If disk is enabled, the pool size will multiply with knowhereThreadPoolNumRatio([1, 32]).",
Export: true,
}
p.KnowhereThreadPoolSize.Init(base.mgr)
p.ChunkRows = ParamItem{
Key: "queryNode.segcore.chunkRows",
Version: "2.0.0",

1
pkg/util/paramtable/component_param_test.go
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@ -298,6 +298,7 @@ func TestComponentParam(t *testing.T) {
assert.Equal(t, int64(1000), Params.MaxGroupNQ.GetAsInt64())
assert.Equal(t, 10.0, Params.TopKMergeRatio.GetAsFloat())
assert.Equal(t, 10.0, Params.CPURatio.GetAsFloat())
assert.Equal(t, uint32(runtime.GOMAXPROCS(0)*4), Params.KnowhereThreadPoolSize.GetAsUint32())
// test small indexNlist/NProbe default
params.Remove("queryNode.segcore.smallIndex.nlist")