MC <rac <at> eastlink.ca> writes: > > Obviously 7zip is far more CPU-intensive than anything in use with ZFS > today. But maybe with all these processor cores coming down the road, > a high-end compression system is just the thing for ZFS to use.
I am not sure you realize the scale of things here. Assuming the worst case: that lzjb (default ZFS compression algorithm) performs as bad as lha in [1], 7zip would compress your data only 20-30% better at the cost of being 4x-5x slower ! Also, in most cases, the bottleneck in data compression is the CPU, so switching to 7zip would reduce the I/O throughput by about 4x. [1] http://warp.povusers.org/ArchiverComparison -marc _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
