Messages in this thread | ![/](/images/icornerl.gif) | | Date | Wed, 12 Mar 2003 23:35:16 +0100 | From | "J.A. Magallon" <> | Subject | Re: drastically low perform. - quad, 4G ram, 2.4.20 |
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On 03.12, Mailing Lists wrote: > > ok, so here's my comparison tests per Martin's earlier post. (if anyone > has suggestions on comparison tests i SHOULD be doing or things i should > be checking, let me know). > > > mem=3072M BOOT > > * hdparm -t /dev/sda > > /dev/sda: > Timing buffered disk reads: 64 MB in 3.78 seconds = 16.93 MB/sec > > > * hdparm -t /dev/sdb > > /dev/sdb: > Timing buffered disk reads: 64 MB in 2.75 seconds = 23.27 MB/sec > >
Don't know about the rest, but this SCSI performance looks pretty low:
annwn:~# hdparm -tT /dev/sda
/dev/sda: Timing buffer-cache reads: 128 MB in 0.24 seconds =533.33 MB/sec Timing buffered disk reads: 64 MB in 1.56 seconds = 41.03 MB/sec
Relevant parts of dmesg:
SCSI subsystem driver Revision: 1.00 PCI: Setting latency timer of device 03:02.0 to 64 scsi0 : Adaptec AIC7XXX EISA/VLB/PCI SCSI HBA DRIVER, Rev 6.2.29 <Adaptec 29160 Ultra160 SCSI adapter> aic7892: Ultra160 Wide Channel A, SCSI Id=7, 32/253 SCBs
blk: queue f7e77a18, I/O limit 4095Mb (mask 0xffffffff) (scsi0:A:0): 160.000MB/s transfers (80.000MHz DT, offset 127, 16bit) (scsi0:A:1): 160.000MB/s transfers (80.000MHz DT, offset 127, 16bit) (scsi0:A:2): 10.000MB/s transfers (10.000MHz, offset 16) Vendor: FUJITSU Model: MAJ3364MP Rev: 0115 Type: Direct-Access ANSI SCSI revision: 04 blk: queue f7e77818, I/O limit 4095Mb (mask 0xffffffff) Vendor: FUJITSU Model: MAJ3364MP Rev: 0115 Type: Direct-Access ANSI SCSI revision: 04 blk: queue f7e77618, I/O limit 4095Mb (mask 0xffffffff) Vendor: TOSHIBA Model: CD-ROM XM-6201TA Rev: 1030 Type: CD-ROM ANSI SCSI revision: 02 blk: queue f7e77418, I/O limit 4095Mb (mask 0xffffffff) Vendor: IOMEGA Model: ZIP 100 Rev: E.08 Type: Direct-Access ANSI SCSI revision: 02
-- J.A. Magallon <jamagallon@able.es> \ Software is like sex: werewolf.able.es \ It's better when it's free Mandrake Linux release 9.1 (Cooker) for i586 Linux 2.4.21-pre5-jam0 (gcc 3.2.2 (Mandrake Linux 9.1 3.2.2-3mdk)) - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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