Lenny - Festplattenzugroff zu langsam
Hallo,
ich hab hier einen VMWare ESXi auf dem 3xLenny, 1xEtch, 1xWinXP läuft.
Vor dem Upgrade hatte ich mit Etch vernünftige Zugriffszeiten beim kopieren
von Dateien. Nach dem Upgrade auf Lenny schlafen einem die Füße ein.
Wenn ich unter Lenny "hdparm -tT /dev/sda" mehrmals ausführe, erhalte ich
folgende Daten:
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kronos:~# hdparm -tT /dev/sda
/dev/sda:
Timing cached reads: 3176 MB in 1.99 seconds = 1592.54 MB/sec
Timing buffered disk reads: 28 MB in 3.43 seconds = 8.17 MB/sec
kronos:~# hdparm -tT /dev/sda
/dev/sda:
Timing cached reads: 11054 MB in 1.99 seconds = 5542.39 MB/sec
Timing buffered disk reads: 40 MB in 3.07 seconds = 13.04 MB/sec
kronos:~# hdparm -tT /dev/sda
/dev/sda:
Timing cached reads: 8332 MB in 1.99 seconds = 4181.51 MB/sec
Timing buffered disk reads: 16 MB in 3.09 seconds = 5.17 MB/sec
kronos:~# hdparm -tT /dev/sda
/dev/sda:
Timing cached reads: 10462 MB in 1.99 seconds = 5255.09 MB/sec
Timing buffered disk reads: 2 MB in 3.20 seconds = 640.19 kB/sec
kronos:~# hdparm -tT /dev/sda
/dev/sda:
Timing cached reads: 10922 MB in 1.98 seconds = 5521.98 MB/sec
Timing buffered disk reads: 38 MB in 3.02 seconds = 12.60 MB/sec
kronos:~# hdparm -tT /dev/sda
/dev/sda:
Timing cached reads: 10342 MB in 1.99 seconds = 5194.35 MB/sec
Timing buffered disk reads: 44 MB in 4.46 seconds = 9.86 MB/sec
kronos:~# hdparm -tT /dev/sda
/dev/sda:
Timing cached reads: 10994 MB in 1.99 seconds = 5523.33 MB/sec
Timing buffered disk reads: 60 MB in 3.12 seconds = 19.20 MB/sec
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Gleicher ESXi-Server, aber mit Debian Etch:
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hermes:~# hdparm -tT /dev/sda
/dev/sda:
Timing cached reads: 12116 MB in 1.99 seconds = 6077.73 MB/sec
Timing buffered disk reads: 148 MB in 3.30 seconds = 44.80 MB/sec
hermes:~# hdparm -tT /dev/sda
/dev/sda:
Timing cached reads: 12046 MB in 1.99 seconds = 6041.80 MB/sec
Timing buffered disk reads: 672 MB in 3.00 seconds = 223.95 MB/sec
hermes:~# hdparm -tT /dev/sda
/dev/sda:
Timing cached reads: 11390 MB in 1.99 seconds = 5712.28 MB/sec
Timing buffered disk reads: 660 MB in 3.01 seconds = 219.09 MB/sec
hermes:~# hdparm -tT /dev/sda
/dev/sda:
Timing cached reads: 11410 MB in 1.99 seconds = 5721.88 MB/sec
Timing buffered disk reads: 2 MB in 4.46 seconds = 459.24 kB/sec
hermes:~# hdparm -tT /dev/sda
/dev/sda:
Timing cached reads: 11578 MB in 1.99 seconds = 5806.84 MB/sec
Timing buffered disk reads: 350 MB in 3.01 seconds = 116.34 MB/sec
hermes:~# hdparm -tT /dev/sda
/dev/sda:
Timing cached reads: 11502 MB in 1.99 seconds = 5768.59 MB/sec
Timing buffered disk reads: 600 MB in 3.01 seconds = 199.51 MB/sec
hermes:~# hdparm -tT /dev/sda
/dev/sda:
Timing cached reads: 10704 MB in 1.99 seconds = 5367.05 MB/sec
Timing buffered disk reads: 710 MB in 3.01 seconds = 235.99 MB/sec
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DMA ist auf beiden ON.
Die Ergebnisse von Lenny sind schon zum heulen. Muss ich da irgend wo noch
einen Schalter umlegen?
Mit freundlichen Grüßen
Mario
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