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5hrs
2023 Jul 27
1
High memory consumption for small AXFR
...hmem-rss:588kB, UID:111 pgtables:28724kB oom_score_adj:0
23:32:47 kernel: oom_reaper: reaped process 635022 (nsd: main), now anon-rss:0kB, file-rss:0kB, shmem-rss:588kB
So, even that there were ~6GB RAM available, NSD could not replace the currently serving zone (50mio RRs) with a small zone with 5RRs.
I wonder, why does NSD needs so much memory to apply the "AXFR-style IXFR"? Is this by design, or a bug?
(On servers with more RAM overhead, step 4 succeeded, but still took 1 minute to serve the new zonen and memory peaked at least to 44GB RAM, so 10GB or more RAM to switch to the sm...