diff --git a/packages/rath-client/src/interfaces.ts b/packages/rath-client/src/interfaces.ts
index 9518e464a..375d8c0c4 100644
--- a/packages/rath-client/src/interfaces.ts
+++ b/packages/rath-client/src/interfaces.ts
@@ -127,6 +127,10 @@ export interface PreferencePanelConfig {
     visMode: 'common' | 'dist';
     nlg: boolean;
     excludeScaleZero: boolean;
+    viewSizeLimit: {
+        dimension: number;
+        measure: number;
+    }
 }
 export interface IDBFieldMeta {
     fid: string;
diff --git a/packages/rath-client/src/loggers/dataImport.ts b/packages/rath-client/src/loggers/dataImport.ts
index b3510c163..343bdca98 100644
--- a/packages/rath-client/src/loggers/dataImport.ts
+++ b/packages/rath-client/src/loggers/dataImport.ts
@@ -40,11 +40,7 @@ export async function dataBackup (file: File) {
       method: 'POST',
       credentials: 'include',
       body: data
-    }).then(res => res.json())
-    .then(res => {
-      // eslint-disable-next-line no-console
-      console.log(res)
-    }).catch(err => {
+    }).then(res => res.json()).catch(err => {
       console.warn(err)
     })
   } else {
diff --git a/packages/rath-client/src/pages/dataSource/baseActions/mainActionButton.tsx b/packages/rath-client/src/pages/dataSource/baseActions/mainActionButton.tsx
index 5b3efb738..c29de6ec1 100644
--- a/packages/rath-client/src/pages/dataSource/baseActions/mainActionButton.tsx
+++ b/packages/rath-client/src/pages/dataSource/baseActions/mainActionButton.tsx
@@ -5,6 +5,7 @@ import intl from 'react-intl-universal';
 import { Menu, MenuButtonProps, MenuItem, MenuList, MenuPopover, MenuTrigger, SplitButton } from '@fluentui/react-components';
 import { Poll24Regular } from '@fluentui/react-icons';
 import va from '@vercel/analytics';
+import { toJS } from 'mobx';
 import { EXPLORE_MODE, PIVOT_KEYS } from '../../../constants';
 import { useGlobalStore } from '../../../store';
 
@@ -14,7 +15,7 @@ export const useActionModes = function () {
     const { exploreMode, taskMode } = commonStore;
     const { satisfyAnalysisCondition, fieldMetas } = dataSourceStore;
     const startMegaAutoAnalysis = useCallback(() => {
-        ltsPipeLineStore.startTask(taskMode).then(() => {
+        ltsPipeLineStore.startTask(taskMode, toJS(megaAutoStore.visualConfig.viewSizeLimit)).then(() => {
             megaAutoStore.emitViewChangeTransaction(0);
         });
         commonStore.setAppKey(PIVOT_KEYS.megaAuto);
diff --git a/packages/rath-client/src/pages/megaAutomation/index.tsx b/packages/rath-client/src/pages/megaAutomation/index.tsx
index 42deb16e5..bdba1939f 100644
--- a/packages/rath-client/src/pages/megaAutomation/index.tsx
+++ b/packages/rath-client/src/pages/megaAutomation/index.tsx
@@ -2,7 +2,7 @@ import React, { useCallback, useRef } from 'react';
 import { observer } from 'mobx-react-lite';
 import styled from 'styled-components';
 import intl from 'react-intl-universal';
-import { runInAction } from 'mobx';
+import { runInAction, toJS } from 'mobx';
 import { DefaultButton, PrimaryButton } from '@fluentui/react';
 import { useGlobalStore } from '../../store';
 import { PIVOT_KEYS } from '../../constants';
@@ -82,7 +82,7 @@ const LTSPage: React.FC = () => {
     //     })
     // }, [megaAutoStore])
     const startTask = useCallback(() => {
-        ltsPipeLineStore.startTask(taskMode).then(() => {
+        ltsPipeLineStore.startTask(taskMode, toJS(megaAutoStore.visualConfig.viewSizeLimit)).then(() => {
             megaAutoStore.emitViewChangeTransaction(0);
         });
         commonStore.setAppKey(PIVOT_KEYS.megaAuto);
diff --git a/packages/rath-client/src/pages/megaAutomation/preference.tsx b/packages/rath-client/src/pages/megaAutomation/preference.tsx
index 27844c938..fd08e57c1 100644
--- a/packages/rath-client/src/pages/megaAutomation/preference.tsx
+++ b/packages/rath-client/src/pages/megaAutomation/preference.tsx
@@ -19,12 +19,13 @@ import { runInAction } from 'mobx';
 import { useGlobalStore } from '../../store';
 import { EXPLORE_VIEW_ORDER } from '../../store/megaAutomation';
 import { IResizeMode } from '../../interfaces';
+import { Label } from '@fluentui/react-components';
 
 const PreferencePanel: React.FC = () => {
     const { megaAutoStore } = useGlobalStore();
     const { visualConfig, showPreferencePannel, nlgThreshold, vizMode } = megaAutoStore;
 
-    const { nlg } = visualConfig;
+    const { nlg, viewSizeLimit } = visualConfig;
 
     const orderOptions: IDropdownOption[] = Object.values(EXPLORE_VIEW_ORDER).map((or) => ({
         text: intl.get(`megaAuto.orderBy.${or}`),
@@ -52,8 +53,8 @@ const PreferencePanel: React.FC = () => {
         runInAction(() => {
             megaAutoStore.setShowPreferencePannel(false);
             megaAutoStore.refreshMainViewSpec();
-        })
-    }, [megaAutoStore])
+        });
+    }, [megaAutoStore]);
 
     const onRenderFooterContent = () => (
         <div>
@@ -77,6 +78,20 @@ const PreferencePanel: React.FC = () => {
             closeButtonAriaLabel="Close"
             onRenderFooterContent={onRenderFooterContent}
         >
+            <Stack.Item>
+                <Label>Default SpinButton</Label>
+                <SpinButton
+                    value={viewSizeLimit.measure.toString()}
+                    min={1}
+                    max={20}
+                    step={1}
+                    onChange={(e, v) => {
+                        megaAutoStore.setVisualConig((cnf) => {
+                            cnf.viewSizeLimit.measure = Number(v);
+                        });
+                    }}
+                />
+            </Stack.Item>
             <Stack.Item>
                 <ChoiceGroup
                     label={intl.get('semiAuto.main.vizsys.title')}
diff --git a/packages/rath-client/src/store/megaAutomation.ts b/packages/rath-client/src/store/megaAutomation.ts
index 922a317c5..87683411a 100644
--- a/packages/rath-client/src/store/megaAutomation.ts
+++ b/packages/rath-client/src/store/megaAutomation.ts
@@ -108,6 +108,10 @@ export class MegaAutomationStore {
             },
             nlg: false,
             excludeScaleZero: false,
+            viewSizeLimit: {
+                dimension: 2,
+                measure: 3
+            }
         };
         this.globalConstraints = {
             dimensions: [],
diff --git a/packages/rath-client/src/store/pipeLineStore/lts.ts b/packages/rath-client/src/store/pipeLineStore/lts.ts
index 79cb2bee2..dc6c11b67 100644
--- a/packages/rath-client/src/store/pipeLineStore/lts.ts
+++ b/packages/rath-client/src/store/pipeLineStore/lts.ts
@@ -1,7 +1,7 @@
 import { makeAutoObservable, observable, runInAction } from "mobx";
 import { ICubeStorageManageMode, Sampling, IFieldSummary, IInsightSpace } from "visual-insights";
 
-import { IRow, ISyncEngine, ITaskTestMode } from "../../interfaces";
+import { IRow, ISyncEngine, ITaskTestMode, PreferencePanelConfig } from "../../interfaces";
 import { initRathWorker, rathEngineServerService, rathEngineService, destroyRathWorker } from "../../services/index";
 import { IRathStorage } from "../../utils/storage";
 import { ClickHouseStore } from "../clickhouseStore";
@@ -67,7 +67,7 @@ export class LTSPipeLine {
     public setCubeStorageManageMode (mode: ICubeStorageManageMode) {
         this.cubeStorageManageMode = mode;
     }
-    public async startTask (taskMode: ITaskTestMode = ITaskTestMode.local) {
+    public async startTask (taskMode: ITaskTestMode = ITaskTestMode.local, limit: PreferencePanelConfig['viewSizeLimit']) {
         const { cleanedData, fieldMetas } = this.dataSourceStore;
         this.computing = true;
         try {
@@ -80,26 +80,19 @@ export class LTSPipeLine {
                         dataSource: cleanedData,
                         cubeStorageManageMode: this.cubeStorageManageMode,
                         fieldMetas,
-                        viewName: `${this.clickHouseStore.currentDB}.${this.clickHouseStore.currentView}`
+                        viewName: `${this.clickHouseStore.currentDB}.${this.clickHouseStore.currentView}`,
+                        limit
                     }
                 })
             } else {
-                await rathEngineService({
-                    task: 'start',
-                    props: {
-                        mode: this.commonStore.computationEngine,
-                        dataSource: cleanedData,
-                        fieldMetas,
-                        viewName: `${this.clickHouseStore.currentDB}.${this.clickHouseStore.currentView}`
-                    }
-                })
                 res = await rathEngineServerService({
                     task: 'start',
                     dataSource: cleanedData,
                     fields: fieldMetas,
                     props: {
                         mode: this.commonStore.computationEngine,
-                        viewName: `${this.clickHouseStore.currentDB}.${this.clickHouseStore.currentView}`
+                        viewName: `${this.clickHouseStore.currentDB}.${this.clickHouseStore.currentView}`,
+                        limit
                     }
                 })
             }
diff --git a/packages/rath-client/src/workers/engine/core.ts b/packages/rath-client/src/workers/engine/core.ts
index c96908d65..474e8e88e 100644
--- a/packages/rath-client/src/workers/engine/core.ts
+++ b/packages/rath-client/src/workers/engine/core.ts
@@ -1,7 +1,7 @@
 
 import { getCombination } from '@kanaries/loa';
 import { IInsightSpace, InsightFlow, Cube, ViewSpace,  } from 'visual-insights'
-import { IRow } from '../../interfaces';
+import { IRow, PreferencePanelConfig } from '../../interfaces';
 import { IVizSpace } from '../../store/megaAutomation';
 import { isSetEqual } from '../../utils';
 // import { setStateInStorage } from '../../utils/storage';
@@ -120,6 +120,14 @@ class CustomDataGraph extends DataGraph {
     // }
 }
 export class RathEngine extends VIEngine {
+    public params: {
+        limit: PreferencePanelConfig['viewSizeLimit']
+    } = {
+        limit: {
+            dimension: 2,
+            measure: 3
+        }
+    }
     public constructor() {
         super();
         // this.workerCollection.register('clusters', KNNClusterWorker);
@@ -320,15 +328,15 @@ export class RathEngine extends VIEngine {
         // console.log(this.dataGraph.dimensions.map(d => this.fields.find(f => f.key === d)!.name))
         const context = this;
         const DEFAULT_BIN_NUM = 16;
-        const { measures: globalMeasures, fieldDictonary } = context
+        const { measures: globalMeasures, fieldDictonary, params } = context
         let ansSpace: IInsightSpace[] = [];
         if (context.cube === null) return ansSpace;
         const globalCuboid = await context.cube.getCuboid([]);
         const globalDist = await globalCuboid.getAggregatedRows(globalMeasures, globalMeasures.map(() => 'dist'));
         const pureMeasureViewMeasures: string[][] = [];
         for (let measures of context.dataGraph.MClusters) {
-            if (measures.length > 4) {
-                pureMeasureViewMeasures.push(...getCombination(measures, 4, 4))
+            if (measures.length > params.limit.measure) {
+                pureMeasureViewMeasures.push(...getCombination(measures, params.limit.measure, params.limit.measure))
             } else {
                 pureMeasureViewMeasures.push(measures)
             }
@@ -372,6 +380,9 @@ export class RathEngine extends VIEngine {
             // FIXME: throtte
             ii % 10 === 0 && setStateInStorage('explore_progress', ii / viewSpaces.length)
             const { dimensions, measures } = space;
+            if (dimensions.length > params.limit.dimension || measures.length > params.limit.measure) {
+                continue;
+            }
             let dropSpace = false;
             const localCuboid = await context.cube.getCuboid(dimensions);
             await localCuboid.loadStateInCache();
diff --git a/packages/rath-client/src/workers/engine/service.ts b/packages/rath-client/src/workers/engine/service.ts
index dbacc9008..117d34bbc 100644
--- a/packages/rath-client/src/workers/engine/service.ts
+++ b/packages/rath-client/src/workers/engine/service.ts
@@ -1,6 +1,6 @@
 import { ICubeStorageManageMode, IFieldSummary, IInsightSpace, Cube, ViewSpace, StatFuncName } from "visual-insights";
 
-import { IFieldMeta, IRow, ISyncEngine } from "../../interfaces";
+import { IFieldMeta, IRow, ISyncEngine, PreferencePanelConfig } from "../../interfaces";
 import { IRathStorage } from "../../utils/storage";
 import { RathCHEngine } from "./clickhouse";
 // import { isSetEqual } from "../../utils/index";
@@ -37,15 +37,16 @@ function destroyEngine () {
     EngineRef.current = null;
 }
 
-type StartPipeLineProps = {
+type StartPipeLineProps = ({
     mode: 'webworker';
     cubeStorageManageMode: ICubeStorageManageMode;
     dataSource: IRow[];
     fieldMetas: IFieldMeta[];
 } | {
     mode: 'clickhouse';
-    fieldMetas: IFieldMeta[];
     viewName: string;
+}) & {
+    limit: PreferencePanelConfig['viewSizeLimit']
 }
 
 async function startPipeLine (props: StartPipeLineProps) {
@@ -56,10 +57,11 @@ async function startPipeLine (props: StartPipeLineProps) {
     let viewFields: IFieldSummary[] = [];
     times.push(performance.now())
     if (EngineRef.mode === 'webworker' && props.mode === 'webworker') {
-        const { dataSource, fieldMetas } = props;
+        const { dataSource, fieldMetas, limit } = props;
         const fieldsProps = fieldMetas.map(f => ({ key: f.fid, semanticType: f.semanticType, analyticType: f.analyticType, dataType: '?' as '?' }));
         const engine = EngineRef.current;
         if (engine === null) throw new Error('Engine is not created.');
+        engine.params.limit = limit
         engine.setData(dataSource)
             .setFields(fieldsProps)
         engine.univarSelection();