Hi, I benchmarked rhashtable based patch vs Jan's patch: records vanilla rhashtable JK patch 2.5M records 102s 29s 25s 5.0M records 317s 28s 30s 6.0M records -- 35s 44s the tests were done using 4.18 kernel (I guess this doesn't matter much in this context), using an SSD. time to mount after a crash (simulated with read-only device mapper) was measured. unfortunately I wasn't able to reproduce with more records as my test node has just 32GB RAM, thanks, Alex On Mon, 4 Nov 2024 20:05:50 +1100 Li Dongyang <dongyangli@xxxxxxx> wrote: > Resizable hashtable should improve journal replay time when > we have million of revoke records. > Notice that rhashtable is used during replay only, > as removal with list_del() is less expensive and it's still used > during regular processing. > > before: > 1048576 records - 95 seconds > 2097152 records - 580 seconds > > after: > 1048576 records - 2 seconds > 2097152 records - 3 seconds > 4194304 records - 7 seconds >
