cmd/ddltest: accelerate test speed (#26114)
cmd/ddltest: accelerate test speed (#26114)

 
coocood/tidb,ngaut/tidb,c4pt0r/tidb,ngaut/tidb,ngaut/tidb,pingcap/tidb,ngaut/tidb,c4pt0r/tidb,kyle-wang/tidb,ngaut/tidb,kyle-wang/tidb,pingcap/tidb,coocood/tidb,c4pt0r/tidb,pingcap/tidb,pingcap/tidb,kyle-wang/tidb,c4pt0r/tidb,kyle-wang/tidb,pingcap/tidb,pingcap/tidb,kyle-wang/tidb,ngaut/tidb,c4pt0r/tidb,kyle-wang/tidb,c4pt0r/tidb