Messages in this thread | | | Date | Thu, 9 May 2002 18:28:21 +0800 (SGT) | From | Ng Pek Yong <> | Subject | Slow harddisk |
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I have 2 Maxtor 5T060H6 HD (60G each), attached to a Promise FastTrak 100 TX2.
I am using the Promise card as a dumb IDE controller card. I run Linux's built-in RAID on the 2 drives (RAID1). The OS version is 2.4.7-10 (RedHat 7.2)
The problem is that I have exceptionally slow HD performance, despite playing around w/ hdparm.
Here's how it look like
------------------------------- hdparm -iv /dev/hde
/dev/hde: multcount = 16 (on) I/O support = 3 (32-bit w/sync) unmaskirq = 1 (on) using_dma = 0 (off) keepsettings = 0 (off) nowerr = 0 (off) readonly = 0 (off) readahead = 8 (on) geometry = 119150/16/63, sectors = 120103200, start = 0
Model=Maxtor 5T060H6, FwRev=TAH71DP0, SerialNo=T6HM013C Config={ Fixed } RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=57 BuffType=DualPortCache, BuffSize=2048kB, MaxMultSect=16, MultSect=16 CurCHS=16383/16/63, CurSects=-66060037, LBA=yes, LBAsects=120103200 IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120} PIO modes: pio0 pio1 pio2 pio3 pio4 DMA modes: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 *udma5 AdvancedPM=yes: disabled (255) Drive Supports : ATA/ATAPI-6 T13 1410D revision 0 : ATA-1 ATA-2 ATA-3 ATA-4 ATA-5 ATA-6
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hdparm -tT /dev/hde
/dev/hde: Timing buffer-cache reads: 128 MB in 0.50 seconds =256.00 MB/sec Timing buffered disk reads: 64 MB in 18.46 seconds = 3.47 MB/sec
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As u can see, my buffered disk read is maxed out at 3.5MB/sec. I have tweaked with -c, -m, -u, -d, -X etc, to no avail.
Any idea if it is RAID1, the Maxtor HD or the Promise card the cause for the slowdown?
Thanks, -PY
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Other info:
cat /proc/cpuinfo processor : 0 vendor_id : AuthenticAMD cpu family : 6 model : 6 model name : AMD Athlon(tm) XP 1500+ stepping : 2 cpu MHz : 1333.420 cache size : 256 KB fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 1 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 mmx fxsr sse syscall mmxext 3dnowext 3dnow bogomips : 2660.76
# cat /proc/meminfo total: used: free: shared: buffers: cached: Mem: 525709312 276729856 248979456 2166784 78929920 109309952 Swap: 1083760640 0 1083760640 MemTotal: 513388 kB MemFree: 243144 kB MemShared: 2116 kB Buffers: 77080 kB Cached: 106748 kB SwapCached: 0 kB Active: 32960 kB Inact_dirty: 152984 kB Inact_clean: 0 kB Inact_target: 3172 kB HighTotal: 0 kB HighFree: 0 kB LowTotal: 513388 kB LowFree: 243144 kB SwapTotal: 1058360 kB SwapFree: 1058360 kB NrSwapPages: 264590 pages
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