Łukasz K wrote: > Hello Matthew, > > I have problems with pool fragmentation. > http://www.opensolaris.org/jive/thread.jspa?threadID=34810 > > Now I want to speed up zfs send, because our pool space maps are > huge - after sending space maps will be smaller ( from 1GB -> 50MB ). > > As I understand I there will not be anything like defragmentation,
We will be implementing defragmentation with the device removal feature, perhaps by the end of the calendar year. > so I need to live with this. But some changes could help: > 1. Auto tune recordsize, when pool is out of 128kB blocks, then should > use smaller ones. > 2. We should be more careful with unloading space maps. I have enough > RAM to keep metaslabs in memory. > > Can you help me with changing this algorithms ? See where metaslab_sync_done() calls space_map_unload(). --matt _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
