I'm having a performance issue with my setup, When I have
This is a test machine which is just a HP desktop with
FreeNAS 10.0.3
4x4TB desktop drives in a RAID-Z1
2x240GB Samsung EVO SSD for SLOG (I'm ordering better slog but this is just for testing)
1xWD Blue 250gb SSD for boot drive
Marvel pci-e SATA controller
32 GB ram
i7-2600 CPU
Intel X520-DA2 (10GB nic)
I also see the same sort of behavior on the NAS I'm setting up for production
and it has
FreeNAS 9.10.1
24x 2T HGST enterprise drives
2x Intel 320SSD for os
LSI 9211-8i controllers
64GB ram
2xXeon E5-2670 CPUS
(no SLOG yet)
Intel X520-DA2 (10GB nic)
Thanks,
Daryl
zfs set sync=disabled
I get ~200MB/s sustained writes, When I do zfs set sync=always
I seem to have a issue where the transfer starts at ~500MB/s (buffer?) for a couple of seconds then drops to about 200MB/s for the first ~6.5GB of transfer then it starts slowly decreasing the speed till it hits ~300KB/s then it jumps back up to 500MB/s and repeats the cycle again. I'm hoping someone might know the reason why it's doing this. It seems to act the same if I use the SLOG or not.This is a test machine which is just a HP desktop with
FreeNAS 10.0.3
4x4TB desktop drives in a RAID-Z1
2x240GB Samsung EVO SSD for SLOG (I'm ordering better slog but this is just for testing)
1xWD Blue 250gb SSD for boot drive
Marvel pci-e SATA controller
32 GB ram
i7-2600 CPU
Intel X520-DA2 (10GB nic)
I also see the same sort of behavior on the NAS I'm setting up for production
and it has
FreeNAS 9.10.1
24x 2T HGST enterprise drives
2x Intel 320SSD for os
LSI 9211-8i controllers
64GB ram
2xXeon E5-2670 CPUS
(no SLOG yet)
Intel X520-DA2 (10GB nic)
Thanks,
Daryl
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