-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Chris Frederick wrote:
> James Pattinson wrote: > >> <snip> Could some of you perhaps run hdparm -Tt on your root disk >> and let me know what you get? I get great performance off the >> disk but the cached read speed is about half the speed of my P4 >> box: >> >> amd64~ # hdparm -Tt /dev/sda >> >> /dev/sda: Timing cached reads: 1532 MB in 2.00 seconds = >> 765.95 MB/sec Timing buffered disk reads: 98 MB in 3.01 >> seconds = 32.58 MB/sec >> >> pentium4~ # hdparm -Tt /dev/sda >> >> /dev/sda: Timing cached reads: 2296 MB in 2.00 seconds = >> 1147.03 MB/sec Timing buffered disk reads: 44 MB in 3.02 >> seconds = 14.56 MB/sec > > > AMD64 3.0 GHz: /dev/hda: Timing cached reads: 1300 MB in 2.00 > seconds = 649.45 MB/sec Timing buffered disk reads: 84 MB in > 3.02 seconds = 27.80 MB/sec > > DUAL Zeon 2.6 GHz: /dev/hda: Timing cached reads: 2196 MB in > 2.00 seconds = 1096.52 MB/sec Timing buffered disk reads: 140 MB > in 3.00 seconds = 46.61 MB/sec > > Looks like my AMD64 setup is getting about half of my Zeon system > performance. Also curious why your P4 buffered disk reads are so > low compared to mine. > > Chris Frederick > Hmmm... I've only for an AMD64 3200 (Ah.. 2.2GHz Winchester core socket 939)... And this is what I get. Signifcantly faster than your 3000. (Do you mean amd64 3000? Or a real 3GHz amd64?) damned ~ # hdparm -Tt /dev/hda /dev/hda: Timing cached reads: 3636 MB in 2.00 seconds = 1817.89 MB/sec Timing buffered disk reads: 106 MB in 3.01 seconds = 35.24 MB/sec damned ~ # hdparm -Tt /dev/hdb /dev/hdb: Timing cached reads: 3428 MB in 2.00 seconds = 1713.89 MB/sec Timing buffered disk reads: 120 MB in 3.04 seconds = 39.52 MB/sec damned ~ # hdparm -Tt /dev/sda /dev/sda: Timing cached reads: 3200 MB in 2.00 seconds = 1599.90 MB/sec Timing buffered disk reads: 164 MB in 3.00 seconds = 54.59 MB/sec damned ~ # -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.1 (GNU/Linux) Comment: Using GnuPG with Thunderbird - http://enigmail.mozdev.org iD8DBQFDV/Zy/3QXwQQkZYwRAscGAKDCA2zowTvLuoFC5N32pQTTnMIsTACdGlMx w/jdviocVBi+AjFz7De07WA= =qDzp -----END PGP SIGNATURE----- -- [email protected] mailing list
