On Jan 8, 2010, at 7:49 PM, bank kus wrote: > dd if=/dev/urandom of=largefile.txt bs=1G count=8 > > cp largefile.txt ./test/1.txt & > cp largefile.txt ./test/2.txt & > > Thats it now the system is totally unusable after launching the two 8G > copies. Until these copies finish no other application is able to launch > completely. Checking prstat shows them to be in the sleep state.
What disk drivers are you using? IDE? -- richard > > Question: > <> I m guessing this because ZFS doesnt use CFQ and that one process is > allowed to queue up all its I/O reads ahead of other processes? > > <> Is there a concept of priority among I/O reads? I only ask because if root > were to launch some GUI application they dont start up until both copies are > done. So there is no concept of priority? Needless to say this does not exist > on Linux 2.60... > -- > This message posted from opensolaris.org > _______________________________________________ > zfs-discuss mailing list > zfs-discuss@opensolaris.org > http://mail.opensolaris.org/mailman/listinfo/zfs-discuss _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
