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--- computing:storage:zfs_perf [2018/06/13 12:41]
gcooper
+++ computing:storage:zfs_perf [2020/05/23 18:04] (current)
gcooper
@@ Line 1: / Line 1: @@
 ====== ZFS Performance Issues ======
+**Great summary for virtualization**: https://youtu.be/fo3EGuCszpE
+:!: **Only for VM storage or databases do you need or want to enable sync.**
+If you simply use ZFS without foreign filesystems on it (VMs), ZFS will never corrupt on a crash due Copy On Write. So for regular filer use, disable sync unless you want a maximal security for small files like on a mailserver.
+===== IOStat =====
+https://docs.oracle.com/cd/E19253-01/819-5461/gammt/index.html
+:!: Statistics are cumulative since boot, so **specify an interval** for more useful stats.
+<file>
+zpool iostat
+zpool iostat 2
+zpool iostat -v poolname 1
+</file>
 ===== Solaris 11.4 =====
@@ Line 7: / Line 25: @@
 ===== Why Intel Optane =====
-It's **crazy not to**!
+It's **crazy not to** unless you don't have NVMe or PCIe slot!
 https://forums.servethehome.com/index.php?threads/intel-optane-32g-800p-900p-for-zfs-pools-and-slog-on-solaris-and-omnios.19810/

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