# Missed slots **URL:** \ **Category:** Operate a Stake Pool\ **Created:** [13 April 2021 12:04 UTC](https://forum.cardano.org/t/missed-slots/57339 "2021-04-13T12:04:50Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![bensson](https://avatars.discourse-cdn.com/v4/letter/b/47e85d/32.png) [@bensson](https://forum.cardano.org/u/bensson)\ **Post date:** [13 April 2021 12:04 UTC](https://forum.cardano.org/t/missed-slots/57339/1 "2021-04-13T12:04:50Z")
Hi, I’m a SPO and I just wondered, how many missed slots by BP is normal, if any. My pool gets about 20-30 missed slots in 24 hours. ---
**Author:** ![laplasz](https://sea1.discourse-cdn.com/flex023/user_avatar/forum.cardano.org/laplasz/32/15238_2.png) [@laplasz](https://forum.cardano.org/u/laplasz)\ **Post date:** [13 April 2021 14:03 UTC](https://forum.cardano.org/t/missed-slots/57339/2 "2021-04-13T14:03:43Z")
btw, Where do you see this info? since I am interested in this stat as well ---
**Author:** ![Alexd1985](https://sea1.discourse-cdn.com/flex023/user_avatar/forum.cardano.org/alexd1985/32/23759_2.png) [@Alexd1985](https://forum.cardano.org/u/Alexd1985)\ **Post date:** [13 April 2021 15:15 UTC](https://forum.cardano.org/t/missed-slots/57339/3 "2021-04-13T15:15:56Z")
cardano\_node\_metrics\_slotsMissedNum\_int ---
**Author:** ![Alexd1985](https://sea1.discourse-cdn.com/flex023/user_avatar/forum.cardano.org/alexd1985/32/23759_2.png) [@Alexd1985](https://forum.cardano.org/u/Alexd1985)\ **Post date:** [13 April 2021 15:16 UTC](https://forum.cardano.org/t/missed-slots/57339/4 "2021-04-13T15:16:35Z")
keep it under monitoring, also u are running 1.25.1? I heard in 1.26.1 no more issues ---
**Author:** ![Spork](https://sea1.discourse-cdn.com/flex023/user_avatar/forum.cardano.org/spork/32/31462_2.png) [@Spork](https://forum.cardano.org/u/Spork)\ **Post date:** [13 April 2021 15:32 UTC](https://forum.cardano.org/t/missed-slots/57339/5 "2021-04-13T15:32:03Z")
It seems to be correlated to hardware performance. My pool runs on a Raspberry Pi, and if TraceMempool is enabled, it misses a few slots every hour. With that setting disabled, it misses very few slots a day. Another pool operator (also Raspberry Pi) mentioned that if the BP was only connected to one relay it helped (vs two or more relays connected). It seems that folks that have more powerful hardware (more RAM, faster Disk IO perhaps) have less of an issue. So if you are running a cloud instance, try upping the RAM or other resources and see how it affects the metric. ---
**Author:** ![bensson](https://avatars.discourse-cdn.com/v4/letter/b/47e85d/32.png) [@bensson](https://forum.cardano.org/u/bensson)\ **Post date:** [13 April 2021 19:03 UTC](https://forum.cardano.org/t/missed-slots/57339/6 "2021-04-13T19:03:51Z")
I’m on 1.26.1. BP and one Relay is in Germany and second Relay is in USA. I’m gonna labour with it and let you all know. ---
**Author:** ![bensson](https://avatars.discourse-cdn.com/v4/letter/b/47e85d/32.png) [@bensson](https://forum.cardano.org/u/bensson)\ **Post date:** [14 April 2021 04:03 UTC](https://forum.cardano.org/t/missed-slots/57339/7 "2021-04-14T04:03:31Z")
After some tries with settings it looks like the problem with missing slots was caused by my second relay, which is located in USA (high latency); BP and primary relay are located in Germany. Now, when the BP is not connected to USA relay, the problem with missed slots is gone (zero missed in about 8 hours). ---
**Author:** ![laplasz](https://sea1.discourse-cdn.com/flex023/user_avatar/forum.cardano.org/laplasz/32/15238_2.png) [@laplasz](https://forum.cardano.org/u/laplasz)\ **Post date:** [14 April 2021 08:34 UTC](https://forum.cardano.org/t/missed-slots/57339/8 "2021-04-14T08:34:40Z")
Thanks for sharing this - so it is indeed a good metrics to monitor the performance of the pool - and probably the solution is to add more relays to your block producer topology… ---
**Author:** ![bensson](https://avatars.discourse-cdn.com/v4/letter/b/47e85d/32.png) [@bensson](https://forum.cardano.org/u/bensson)\ **Post date:** [14 April 2021 10:29 UTC](https://forum.cardano.org/t/missed-slots/57339/9 "2021-04-14T10:29:26Z")
Exactly. And additionaly, it looks like that the closer your relays is located, the better for latency and thus the synchronization speeds BP will have. Cheers ---
**Author:** ![Alexd1985](https://sea1.discourse-cdn.com/flex023/user_avatar/forum.cardano.org/alexd1985/32/23759_2.png) [@Alexd1985](https://forum.cardano.org/u/Alexd1985)\ **Post date:** [14 April 2021 10:33 UTC](https://forum.cardano.org/t/missed-slots/57339/10 "2021-04-14T10:33:00Z")
I had the Producer in DE (when it was on cloud) and it was connected with my relays from USA, DE and RO and never had issues; indeed the RTT for USA relay was a little high but never has issues in creating the blocks. ---
**Author:** ![bensson](https://avatars.discourse-cdn.com/v4/letter/b/47e85d/32.png) [@bensson](https://forum.cardano.org/u/bensson)\ **Post date:** [14 April 2021 10:36 UTC](https://forum.cardano.org/t/missed-slots/57339/11 "2021-04-14T10:36:16Z")
And, by your mean, what is acceptable count of missed slots for staking pool? ---
**Author:** ![Alexd1985](https://sea1.discourse-cdn.com/flex023/user_avatar/forum.cardano.org/alexd1985/32/23759_2.png) [@Alexd1985](https://forum.cardano.org/u/Alexd1985)\ **Post date:** [14 April 2021 10:47 UTC](https://forum.cardano.org/t/missed-slots/57339/12 "2021-04-14T10:47:40Z")
I don’t know if it is acceptable but certainly you will not loss a block because of this… .anyway… your Producer has connections with 2 Relays right? so if the USA relay has issue the producer should receive the slots from the 2nd Relay right? and I know were issues before 1.26.1 … I don’t know if were fixed > > > Hi, > I have a question about the missed slots at the turn of the epoch displayed in RTView. Are the missed slots... ---
**Author:** ![bensson](https://avatars.discourse-cdn.com/v4/letter/b/47e85d/32.png) [@bensson](https://forum.cardano.org/u/bensson)\ **Post date:** [14 April 2021 11:44 UTC](https://forum.cardano.org/t/missed-slots/57339/13 "2021-04-14T11:44:44Z")
You’re right Alex, no doubt. The fact is (maybe coincidence), that my pool gets about 25-30 % less missed slots when the USA relay is offline. I have to play with it. ---
**Author:** ![jf3110](https://sea1.discourse-cdn.com/flex023/user_avatar/forum.cardano.org/jf3110/32/32352_2.png) [@jf3110](https://forum.cardano.org/u/jf3110)\ **Post date:** [14 April 2021 13:41 UTC](https://forum.cardano.org/t/missed-slots/57339/14 "2021-04-14T13:41:24Z")
If you want to mint blocks and you miss slots while minting you’d loose that block - AFAIK. In other words missing blocks is not acceptable. ---
**Author:** ![jf3110](https://sea1.discourse-cdn.com/flex023/user_avatar/forum.cardano.org/jf3110/32/32352_2.png) [@jf3110](https://forum.cardano.org/u/jf3110)\ **Post date:** [14 April 2021 13:44 UTC](https://forum.cardano.org/t/missed-slots/57339/15 "2021-04-14T13:44:55Z")
It’s not fixed in 1.26.1. Still seeing missed slots. Investigated for a couple of days now. Having not missed a slot for the last 5 hours, but for me it’s mostly happening over night. I.e., I’ll have to wait and see for some time to come. ---
**Author:** ![laplasz](https://sea1.discourse-cdn.com/flex023/user_avatar/forum.cardano.org/laplasz/32/15238_2.png) [@laplasz](https://forum.cardano.org/u/laplasz)\ **Post date:** [19 April 2021 10:40 UTC](https://forum.cardano.org/t/missed-slots/57339/16 "2021-04-19T10:40:23Z")
@Alexd1985 how can I enable this metric - when making a query `curl localhost:12798/metrics` it does not show up… ---
**Author:** ![Alexd1985](https://sea1.discourse-cdn.com/flex023/user_avatar/forum.cardano.org/alexd1985/32/23759_2.png) [@Alexd1985](https://forum.cardano.org/u/Alexd1985)\ **Post date:** [19 April 2021 10:42 UTC](https://forum.cardano.org/t/missed-slots/57339/17 "2021-04-19T10:42:08Z")
This one? cardano\_node\_metrics\_slotsMissedNum\_int ---
**Author:** ![laplasz](https://sea1.discourse-cdn.com/flex023/user_avatar/forum.cardano.org/laplasz/32/15238_2.png) [@laplasz](https://forum.cardano.org/u/laplasz)\ **Post date:** [19 April 2021 10:45 UTC](https://forum.cardano.org/t/missed-slots/57339/18 "2021-04-19T10:45:44Z")
yes, I can not find among the metrics I got when making the query ---
**Author:** ![Alexd1985](https://sea1.discourse-cdn.com/flex023/user_avatar/forum.cardano.org/alexd1985/32/23759_2.png) [@Alexd1985](https://forum.cardano.org/u/Alexd1985)\ **Post date:** [19 April 2021 10:46 UTC](https://forum.cardano.org/t/missed-slots/57339/19 "2021-04-19T10:46:21Z")
Are u trying on Producer right? ---
**Author:** ![laplasz](https://sea1.discourse-cdn.com/flex023/user_avatar/forum.cardano.org/laplasz/32/15238_2.png) [@laplasz](https://forum.cardano.org/u/laplasz)\ **Post date:** [19 April 2021 10:47 UTC](https://forum.cardano.org/t/missed-slots/57339/20 "2021-04-19T10:47:04Z")
yes, on producer. [Next page](https://forum.cardano.org/t/missed-slots/57339.md?page=2)