Messages in this thread | | | Date | Fri, 02 Mar 2001 13:41:02 -0600 | From | Steve Lord <> |
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> > > On Friday, March 02, 2001 01:25:25 PM -0600 Steve Lord <lord@sgi.com> wrote: > > >> For why ide is beating scsi in this benchmark...make sure tagged queueing > >> is on (or increase the queue length?). For the xlog.c test posted, I > >> would expect scsi to get faster than ide as the size of the write > >> increases. > > > > I think the issue is the call being used now is going to get slower the > > larger the device is, just from the point of view of how many buffers it > > has to scan. > > filemap_fdatawait, filemap_fdatasync, and fsync_inode_buffers all restrict > their scans to a list of dirty buffers for that specific file. Only > file_fsync goes through all the dirty buffers on the device, and the ext2 > fsync path never calls file_fsync. > > Or am I missing something? > > -chris > >
No you are not, I will now go put on the brown paper bag.....
The scsi thing is wierd though, we have seen it here too.
Steve
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