Re: [zfs-discuss] Sequential vs Random I/O on array controller for ZFS usage

2007-10-25 Thread Victor Latushkin
Roch Bourbonnais wrote: > Le 21 oct. 07 à 02:40, Vincent Fox a écrit : > >> We had a Sun Engineer on-site recently who said this: >> >> We should set our array controllers to sequential I/O *even* if we >> are doing random I/O if we are using ZFS. >> This is because the Arc cache is already grou

Re: [zfs-discuss] Sequential vs Random I/O on array controller for ZFS usage

2007-10-23 Thread Roch Bourbonnais
Le 21 oct. 07 à 02:40, Vincent Fox a écrit : > We had a Sun Engineer on-site recently who said this: > > We should set our array controllers to sequential I/O *even* if we > are doing random I/O if we are using ZFS. > This is because the Arc cache is already grouping requests up > sequentiall

[zfs-discuss] Sequential vs Random I/O on array controller for ZFS usage

2007-10-20 Thread Vincent Fox
We had a Sun Engineer on-site recently who said this: We should set our array controllers to sequential I/O *even* if we are doing random I/O if we are using ZFS. This is because the Arc cache is already grouping requests up sequentially so to the array controller it will appear like sequenti