# \#nsup

**URL:** https://discuss.aerospike.com/tag/nsup/89.md

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## [High Latency Spikes Occurring Every 2-3 Minutes: Persistent Lag After Stopping Writes - Is NSUP the Root Cause?](https://discuss.aerospike.com/t/high-latency-spikes-occurring-every-2-3-minutes-persistent-lag-after-stopping-writes-is-nsup-the-root-cause/12621)

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**Author:** [@hensen\_yoo](https://discuss.aerospike.com/u/hensen_yoo)\
**Replies:** 2\
**Last updated:** [November 21, 2025, 5:13am UTC](https://discuss.aerospike.com/t/high-latency-spikes-occurring-every-2-3-minutes-persistent-lag-after-stopping-writes-is-nsup-the-root-cause/12621 "2025-11-21T05:13:20Z")

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Hello Aerospike Community Team, We are experiencing a persistent, periodic latency issue in our cluster and are seeking community insights, especially regarding the Namespace Supervisor (NSUP) process. We observe signi…

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## [Expiration falling behind](https://discuss.aerospike.com/t/expiration-falling-behind/4179)

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**Author:** [@u999](https://discuss.aerospike.com/u/u999)\
**Replies:** 8\
**Last updated:** [December 30, 2020, 3:08am UTC](https://discuss.aerospike.com/t/expiration-falling-behind/4179 "2020-12-30T03:08:30Z")

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@kporter, i been also facing the same issues at my setup, as i use single AS community server, we have high volumes of data and it is stored with 300seconds on ttl on each record, but it never expires any, here is a snap…

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## [Aerospike scan / nsup logic](https://discuss.aerospike.com/t/aerospike-scan-nsup-logic/5447)

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**Author:** [@Denis\_Orlov](https://discuss.aerospike.com/u/Denis_Orlov)\
**Replies:** 1\
**Last updated:** [August 14, 2018, 8:24pm UTC](https://discuss.aerospike.com/t/aerospike-scan-nsup-logic/5447 "2018-08-14T20:24:36Z")

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Hello, I have 2 nodes cluster which gives me next information for ‘info’ command: But when I check nsup logs, I have only 1 billion records scanned: INFO (nsup): (thr\_nsup.c:936) {} nsup-done: master-objects (1029714…