search for: optan

...FI booting the windows guest and defining “<blockio logical_block_size='4096' physical_block_size='4096'/>”? Perhaps better block size consistency through to the zvol? Here is my setup: 48 core Haswell CPU 192G Ram Linux 4.14.61 or 4.9.114 (testing both) ZFS file system on optane SSD drive or ZFS file system on dumb HBA with 8 spindles of 15k disks (testing both) 4k block size zvol for virtual machines 32G arc cache Here is my VM: <domain type='kvm' id='12'> <name>testvm</name> <memory unit='KiB'>33554432</memory>...

...s writes on Gluster. > >> The read performance has been improved in many ways in recent releases > >> (md-cache, parallel-readdir, hot-tier). > >> But write performance is more or less the same and you cannot go above > >> 10K smallfiles create - even with SSD or Optane drives. > >> Even ramdisk is not helping much here, because the bottleneck is not > >> in the storage performance. > >> Key problems I've noticed: > >> - LOOKUPs are expensive, because there is separate query for every > >> depth level of destinatio...

...defining ?<blockio logical_block_size='4096' physical_block_size='4096'/>?? Perhaps better block size consistency through to the zvol? > > >Here is my setup: > >48 core Haswell CPU >192G Ram >Linux 4.14.61 or 4.9.114 (testing both) >ZFS file system on optane SSD drive or ZFS file system on dumb HBA with 8 spindles of 15k disks (testing both) >4k block size zvol for virtual machines >32G arc cache > >Here is my VM: > ><domain type='kvm' id='12'> > <name>testvm</name> > <memory unit='KiB...

On 09/08/2017 01:31 PM, hw wrote: > Mark Haney wrote: > > I/O is not heavy in that sense, that?s why I said that?s not the > application. > There is I/O which, as tests have shown, benefits greatly from low > latency, which > is where the idea to use SSDs for the relevant data has arisen from.? > This I/O > only involves a small amount of data and is not sustained