Hi, iam testing a box with FreeNAS (BSD) and ZFS. On this box i use virtualized byhve guest as afs server.
The box includes SAS drives (12G/s) on HBA (12G/s). I created some vice partitions for the afs server guest and connect them with ahci. If For ZFS pool which contains the vice partitions: - atime and deduplication are off - lz4 compression is on The afs server parameters: - udp size is set to 2MB and 8MB for test - afs sync is set to "never", zfs sync is enabled >From afs client (desktop box, 1GE) to virtual afs server guest there is 1GE ethernet connection. If i test this connection with iperf i get nearly 1GE test data speed. If it test on client side with dd and create a file in the afs path i get about 25 MB/s (200 MBit/s) with memcache and disk cache. if i dd with oflag=direct to the unmounted afs vicepa partition device (/dev/sdX) in the afs server guest system then i get about 1 GBbyte/s which nears to 12 Gbit/s of SAS drive/ HBA speed. Any ideas why afs speed is only about 25 MByte/s ? Maybe i have to adjust another afs server parameter ? Andreas _______________________________________________ OpenAFS-info mailing list OpenAFS-info@openafs.org https://lists.openafs.org/mailman/listinfo/openafs-info