-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 06/10/10 10:23, Albert Lee wrote: > The problem here is probably from having dedup enabled. Disabling it > does not affect the existing data, which has already been > deduplicated. Reading any of this will incur a deduplication table > lookup, which can be quite expensive in terms of random seeks (you can > check with DTrace, see /opt/DTT/disk/seeksize.d). I've also seen poor > performance on a pool that was previously full.
How can deduplication affect reading performance, beside disordering the data around the disk?. I don't see the point of accessing the deduplication table for file reading. - -- Jesus Cea Avion _/_/ _/_/_/ _/_/_/ j...@jcea.es - http://www.jcea.es/ _/_/ _/_/ _/_/ _/_/ _/_/ jabber / xmpp:j...@jabber.org _/_/ _/_/ _/_/_/_/_/ . _/_/ _/_/ _/_/ _/_/ _/_/ "Things are not so easy" _/_/ _/_/ _/_/ _/_/ _/_/ _/_/ "My name is Dump, Core Dump" _/_/_/ _/_/_/ _/_/ _/_/ "El amor es poner tu felicidad en la felicidad de otro" - Leibniz -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iQCVAwUBTKxYJZlgi5GaxT1NAQIEhgP9GUl0ved+erOeq6ohLSepKPTI+paUaECq nP9E9ljXU3SFWxlekfDJiP+9gkiak0HXuKvPdokfsGE4O8tUGo5CCPOi2J2ijDNc fkCU7waPCAiJ0ExJHpqZaE+/UcGQ0NlL9liZoyB1m8QDpIlLWKs1stJTS4KfoT/M NdszehaLhz0= =HqBz -----END PGP SIGNATURE----- _______________________________________________ OpenIndiana-discuss mailing list OpenIndiana-discuss@openindiana.org http://openindiana.org/mailman/listinfo/openindiana-discuss
