以前、メモリ8GBのマシンでのZFS用チューニング設定を紹介したが、昨年中に8.2-STABLEに入ったvm.kmem_size_scale, vm.kmem_size_max, vfs.zfs.arc_maxの自動設定が8GB超のメモリを積んだマシンにとっても適切なものとなり、無設定でも運用上支障がなくなった。
zfs-statsでカーネルメモリの使用状況やARCの統計情報を見て問題がなければ、これらの値を手で調整する必要はもうないだろう。あとは、どのくらい書き込みアクセスが発生するか、データロス時のダメージはどれほどかを見つつ、以下のような項目だけを残して運用している。
/boot/loader.conf:
|
1 2 |
vfs.zfs.txg.timeout="5" vfs.zfs.prefetch_disable="1" |
/etc/sysctl.conf:
|
1 2 |
# 2GB vfs.zfs.txg.write_limit_override=2147483648 |
Can you be more specific about the content of your article? After reading it, I still have some doubts. Hope you can help me.
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Can you be more specific about the content of your article? After reading it, I still have some doubts. Hope you can help me.
Can you be more specific about the content of your article? After reading it, I still have some doubts. Hope you can help me.
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