Messages in this thread | | | Date | Sun, 19 Sep 1999 20:05:30 +0100 | From | Jon Masters <> | Subject | RE: UDMA |
| |
OK. Both disks are now using DMA. I have applied the very recent TEKRAM Flash Upgrade (which got it working) and then applied Mr. Hedrick's IDE patches to 2.2.12. Basically, here is the output - it's still a little crap and I'd like to go faster. My motherboard has a UDMA33 controller, so surely the transfer rate could be twice what it is below?
I have given 3 readings for each disk so that it isn't just a "one off":
OLDER DISK:
[root@periscope mastersj]# hdparm -tT /dev/hda
/dev/hda: Timing buffer-cache reads: 128 MB in 1.34 seconds =95.52 MB/sec Timing buffered disk reads: 64 MB in 5.51 seconds =11.62 MB/sec [root@periscope mastersj]# hdparm -tT /dev/hda
/dev/hda: Timing buffer-cache reads: 128 MB in 1.42 seconds =90.14 MB/sec Timing buffered disk reads: 64 MB in 5.26 seconds =12.17 MB/sec [root@periscope mastersj]# hdparm -tT /dev/hda
/dev/hda: Timing buffer-cache reads: 128 MB in 1.40 seconds =91.43 MB/sec Timing buffered disk reads: 64 MB in 5.31 seconds =12.05 MB/sec
NEWER DISK:
[root@periscope mastersj]# hdparm -tT /dev/hdb
/dev/hdb: Timing buffer-cache reads: 128 MB in 1.44 seconds =88.89 MB/sec Timing buffered disk reads: 64 MB in 4.27 seconds =14.99 MB/sec [root@periscope mastersj]# hdparm -tT /dev/hdb
/dev/hdb: Timing buffer-cache reads: 128 MB in 1.47 seconds =87.07 MB/sec Timing buffered disk reads: 64 MB in 4.32 seconds =14.81 MB/sec [root@periscope mastersj]# hdparm -tT /dev/hdb
/dev/hdb: Timing buffer-cache reads: 128 MB in 1.44 seconds =88.89 MB/sec Timing buffered disk reads: 64 MB in 4.28 seconds =14.95 MB/sec
Thanx, Your ever faithful linux follower, Jon.
-- Jonathan C. Masters (jonathan@oxlug.org) www.brookes.ac.uk/~95227860 "Upon this rock I will build my church and the gates of hell shall not prevail against it". -- Matthew 16, 17-18
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu Please read the FAQ at http://www.tux.org/lkml/
| |