# Long response after migrate **URL:** \ **Category:** Community Support\ **Created:** [December 19, 2019, 1:26pm UTC](https://forums.rocket.chat/t/long-response-after-migrate/5335 "2019-12-19T13:26:37Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![fomind](https://avatars.discourse-cdn.com/v4/letter/f/bbce88/32.png) [@fomind](https://forums.rocket.chat/u/fomind)\ **Post date:** [December 19, 2019, 1:26pm UTC](https://forums.rocket.chat/t/long-response-after-migrate/5335/1 "2019-12-19T13:26:38Z")
### Description After the migration, the new server responds for a very long time. Users enter for 15 minutes, message delay for 5-10 minutes. ### Server Setup Information - server has 8 cores, 32gb ram, 250ssd - Version of Rocket.Chat Server: 2.1.1 rev.1414 - Operating System: Ubuntu Server 18.04 - Deployment Method: snap - Number of Running Instances: - DB Replicaset Oplog: - NodeJS Version: - MongoDB Version: 3.6.14 wiredtiger engine - About 100 users ### Any additional Information Did backup and restore with this instructions [https://rocket.chat/docs/installation/manual-installation/ubuntu/snaps/](https://rocket.chat/docs/installation/manual-installation/ubuntu/snaps/) without any errors My database takes 29gb size, most of all it is uploads (Gridfs) now it 10 hours after starting new server but nothing changes , users still enter for 15 minutes(login page said “Please wait”), message delay for 5-10 minutes ---
**Author:** ![lucia.guevgeozian](https://sea1.discourse-cdn.com/flex021/user_avatar/forums.rocket.chat/lucia.guevgeozian/32/447_2.png) [@lucia.guevgeozian](https://forums.rocket.chat/u/lucia.guevgeozian)\ **Post date:** [December 19, 2019, 2:09pm UTC](https://forums.rocket.chat/t/long-response-after-migrate/5335/2 "2019-12-19T14:09:28Z")
Hi, could you execute this and confirm the output is 3.6? `rocketchat-server.mongo --eval "printjson(db.adminCommand ({getParameter: 1, featureCompatibilityVersion: 1}))"|grep '"version" :'` ---
**Author:** ![fomind](https://avatars.discourse-cdn.com/v4/letter/f/bbce88/32.png) [@fomind](https://forums.rocket.chat/u/fomind)\ **Post date:** [December 19, 2019, 2:19pm UTC](https://forums.rocket.chat/t/long-response-after-migrate/5335/3 "2019-12-19T14:19:12Z")
> [@lucia.guevgeozian](#): > > rocketchat-server.mongo --eval “printjson(db.adminCommand ({getParameter: 1, featureCompatibilityVersion: 1}))”|grep ‘“version” :’ Output: “version” : “3.6” ---
**Author:** ![fomind](https://avatars.discourse-cdn.com/v4/letter/f/bbce88/32.png) [@fomind](https://forums.rocket.chat/u/fomind)\ **Post date:** [December 19, 2019, 2:21pm UTC](https://forums.rocket.chat/t/long-response-after-migrate/5335/4 "2019-12-19T14:21:17Z")
and i run htop and seem that mongo processes get Red 15.0G VIRT and 13.5G RES and at this moment message delay is 1-2 minutes. this is faster that 2 hour ago)))))))) ---
**Author:** ![lucia.guevgeozian](https://sea1.discourse-cdn.com/flex021/user_avatar/forums.rocket.chat/lucia.guevgeozian/32/447_2.png) [@lucia.guevgeozian](https://forums.rocket.chat/u/lucia.guevgeozian)\ **Post date:** [December 19, 2019, 9:18pm UTC](https://forums.rocket.chat/t/long-response-after-migrate/5335/5 "2019-12-19T21:18:39Z")
Your system seems to have enough memory, but it could be a limitation of the use of gridfs. Also these latest versions changed the default configuration for notifications, you think it could be related to that? if you disable most the default notify all messages do you see any changes? ---
**Author:** ![fomind](https://avatars.discourse-cdn.com/v4/letter/f/bbce88/32.png) [@fomind](https://forums.rocket.chat/u/fomind)\ **Post date:** [December 20, 2019, 3:04pm UTC](https://forums.rocket.chat/t/long-response-after-migrate/5335/6 "2019-12-20T15:04:06Z")
No, all my notifications settings like in old server. Yesterday after two hour from my last post lags are almost gone. But still there are periodically present. And yesterday at the moment when the server stopped lagging, a bunch of processes appeared in htop. ![htop](https://us1.discourse-cdn.com/flex021/uploads/rocketchat/original/2X/7/7d74130f8d4e0db62f557781ae58c4ce7511d42a.png) And output of journalctl -f -u snap.rocketchat-server.rocketchat-mongo ``` -- Logs begin at Thu 2019-12-12 16:04:35 CET. -- ``` Dec 20 15:45:57 Ubuntu-1804-bionic-64-minimal rocketchat-server.rocketchat-mongo[7106]: 2019-12-20T15:45:57.361+0100 I COMMAND [conn18] command parties.rocketchat\_uploads.chunks command: find { find: “rocketchat\_uploads.chunks”, filter: { files\_id: “SDGeQJtS84iB9q9wr” }, sort: { n: 1 }, returnKey: false, showRecordId: false, $clusterTime: { clusterTime: Timestamp(1576853099, 3), signature: { hash: BinData(0, 0000000000000000000000000000000000000000), keyId: 0 } }, $db: “parties” } planSummary: COLLSCAN keysExamined:0 docsExamined:141888 hasSortStage:1 cursorExhausted:1 numYields:3025 nreturned:1 reslen:32594 locks:{ Global: { acquireCount: { r: 6052 } }, Database: { acquireCount: { r: 3026 } }, Collection: { acquireCount: { r: 3026 } } } protocol:op\_query 56452ms Dec 20 15:45:57 Ubuntu-1804-bionic-64-minimal rocketchat-server.rocketchat-mongo[7106]: 2019-12-20T15:45:57.362+0100 I COMMAND [conn20] command parties.rocketchat\_uploads.chunks command: find { find: “rocketchat\_uploads.chunks”, filter: { files\_id: “cgEg7S7EK8ntsj8EK” }, sort: { n: 1 }, returnKey: false, showRecordId: false, $clusterTime: { clusterTime: Timestamp(1576853101, 2), signature: { hash: BinData(0, 0000000000000000000000000000000000000000), keyId: 0 } }, $db: “parties” } planSummary: COLLSCAN keysExamined:0 docsExamined:141888 hasSortStage:1 cursorExhausted:1 numYields:2997 nreturned:1 reslen:198905 locks:{ Global: { acquireCount: { r: 5996 } }, Database: { acquireCount: { r: 2998 } }, Collection: { acquireCount: { r: 2998 } } } protocol:op\_query 55449ms Dec 20 15:45:57 Ubuntu-1804-bionic-64-minimal rocketchat-server.rocketchat-mongo[7106]: 2019-12-20T15:45:57.362+0100 I COMMAND [conn17] command parties.rocketchat\_uploads.chunks command: find { find: “rocketchat\_uploads.chunks”, filter: { files\_id: “2X5ZDuQuN4QCE7mFE” }, sort: { n: 1 }, returnKey: false, showRecordId: false, $clusterTime: { clusterTime: Timestamp(1576853087, 5), signature: { hash: BinData(0, 0000000000000000000000000000000000000000), keyId: 0 } }, $db: “parties” } planSummary: COLLSCAN keysExamined:0 docsExamined:141888 hasSortStage:1 cursorExhausted:1 numYields:3234 nreturned:1 reslen:179962 locks:{ Global: { acquireCount: { r: 6470 } }, Database: { acquireCount: { r: 3235 } }, Collection: { acquireCount: { r: 3235 } } } protocol:op\_query 61960ms Dec 20 15:45:57 Ubuntu-1804-bionic-64-minimal rocketchat-server.rocketchat-mongo[7106]: 2019-12-20T15:45:57.363+0100 I COMMAND [conn14] command parties.rocketchat\_uploads.chunks command: find { find: “rocketchat\_uploads.chunks”, filter: { files\_id: “tfGfndsiwGCALkNCB” }, sort: { n: 1 }, returnKey: false, showRecordId: false, $clusterTime: { clusterTime: Timestamp(1576853101, 2), signature: { hash: BinData(0, 0000000000000000000000000000000000000000), keyId: 0 } }, $db: “parties” } planSummary: COLLSCAN keysExamined:0 docsExamined:141888 hasSortStage:1 cursorExhausted:1 numYields:2972 nreturned:13 reslen:3271927 locks:{ Global: { acquireCount: { r: 5946 } }, Database: { acquireCount: { r: 2973 } }, Collection: { acquireCount: { r: 2973 } } } protocol:op\_query 54273ms Dec 20 15:46:57 Ubuntu-1804-bionic-64-minimal rocketchat-server.rocketchat-mongo[7106]: 2019-12-20T15:46:57.523+0100 I COMMAND [conn17] command parties.rocketchat\_uploads.chunks command: find { find: “rocketchat\_uploads.chunks”, filter: { files\_id: “waS7FYMdvykG3Gg7x” }, sort: { n: 1 }, returnKey: false, showRecordId: false, $clusterTime: { clusterTime: Timestamp(1576853160, 6), signature: { hash: BinData(0, 0000000000000000000000000000000000000000), keyId: 0 } }, $db: “parties” } planSummary: COLLSCAN keysExamined:0 docsExamined:141888 hasSortStage:1 cursorExhausted:1 numYields:2897 nreturned:1 reslen:63855 locks:{ Global: { acquireCount: { r: 5796 } }, Database: { acquireCount: { r: 2898 } }, Collection: { acquireCount: { r: 2898 } } } protocol:op\_query 51555ms Dec 20 15:46:57 Ubuntu-1804-bionic-64-minimal rocketchat-server.rocketchat-mongo[7106]: 2019-12-20T15:46:57.524+0100 I COMMAND [conn18] command parties.rocketchat\_uploads.chunks command: find { find: “rocketchat\_uploads.chunks”, filter: { files\_id: “SDGeQJtS84iB9q9wr” }, sort: { n: 1 }, returnKey: false, showRecordId: false, $clusterTime: { clusterTime: Timestamp(1576853157, 26), signature: { hash: BinData(0, 0000000000000000000000000000000000000000), keyId: 0 } }, $db: “parties” } planSummary: COLLSCAN keysExamined:0 docsExamined:141888 hasSortStage:1 cursorExhausted:1 numYields:3128 nreturned:1 reslen:32594 locks:{ Global: { acquireCount: { r: 6258 } }, Database: { acquireCount: { r: 3129 } }, Collection: { acquireCount: { r: 3129 } } } protocol:op\_query 59269ms Dec 20 15:46:57 Ubuntu-1804-bionic-64-minimal rocketchat-server.rocketchat-mongo[7106]: 2019-12-20T15:46:57.524+0100 I COMMAND [conn20] command parties.rocketchat\_uploads.chunks command: find { find: “rocketchat\_uploads.chunks”, filter: { files\_id: “yQTBA6hNckNwfHZXQ” }, sort: { n: 1 }, returnKey: false, showRecordId: false, $clusterTime: { clusterTime: Timestamp(1576853167, 1), signature: { hash: BinData(0, 0000000000000000000000000000000000000000), keyId: 0 } }, $db: “parties” } planSummary: COLLSCAN keysExamined:0 docsExamined:141888 hasSortStage:1 cursorExhausted:1 numYields:2707 nreturned:5 reslen:1168817 locks:{ Global: { acquireCount: { r: 5416 } }, Database: { acquireCount: { r: 2708 } }, Collection: { acquireCount: { r: 2708 } } } protocol:op\_query 46175ms Dec 20 15:48:42 Ubuntu-1804-bionic-64-minimal rocketchat-server.rocketchat-mongo[7106]: 2019-12-20T15:48:42.520+0100 I COMMAND [conn17] command parties.rocketchat\_uploads.chunks command: find { find: “rocketchat\_uploads.chunks”, filter: { files\_id: “SDGeQJtS84iB9q9wr” }, sort: { n: 1 }, returnKey: false, showRecordId: false, $clusterTime: { clusterTime: Timestamp(1576853257, 1), signature: { hash: BinData(0, 0000000000000000000000000000000000000000), keyId: 0 } }, $db: “parties” } planSummary: COLLSCAN keysExamined:0 docsExamined:141888 hasSortStage:1 cursorExhausted:1 numYields:3193 nreturned:1 reslen:32594 locks:{ Global: { acquireCount: { r: 6388 } }, Database: { acquireCount: { r: 3194 } }, Collection: { acquireCount: { r: 3194 } } } protocol:op\_query 60758ms Dec 20 15:48:42 Ubuntu-1804-bionic-64-minimal rocketchat-server.rocketchat-mongo[7106]: 2019-12-20T15:48:42.520+0100 I COMMAND [conn14] command parties.rocketchat\_uploads.chunks command: find { find: “rocketchat\_uploads.chunks”, filter: { files\_id: “udWW9fBMNQQdQ9rFn” }, sort: { n: 1 }, returnKey: false, showRecordId: false, $clusterTime: { clusterTime: Timestamp(1576853267, 6), signature: { hash: BinData(0, 0000000000000000000000000000000000000000), keyId: 0 } }, $db: “parties” } planSummary: COLLSCAN keysExamined:0 docsExamined:141888 hasSortStage:1 cursorExhausted:1 numYields:2921 nreturned:1 reslen:57938 locks:{ Global: { acquireCount: { r: 5844 } }, Database: { acquireCount: { r: 2922 } }, Collection: { acquireCount: { r: 2922 } } } protocol:op\_query 52307ms Dec 20 15:48:42 Ubuntu-1804-bionic-64-minimal rocketchat-server.rocketchat-mongo[7106]: 2019-12-20T15:48:42.520+0100 I COMMAND [conn20] command parties.rocketchat\_uploads.chunks command: find { find: “rocketchat\_uploads.chunks”, filter: { files\_id: “SDGeQJtS84iB9q9wr” }, sort: { n: 1 }, returnKey: false, showRecordId: false, $clusterTime: { clusterTime: Timestamp(1576853267, 6), signature: { hash: BinData(0, 0000000000000000000000000000000000000000), keyId: 0 } }, $db: “parties” } planSummary: COLLSCAN keysExamined:0 docsExamined:141888 hasSortStage:1 cursorExhausted:1 numYields:2969 nreturned:1 reslen:32594 locks:{ Global: { acquireCount: { r: 5940 } }, Database: { acquireCount: { r: 2970 } }, Collection: { acquireCount: { r: 2970 } } } protocol:op\_query 53792ms and these connections just swap places…