Very low disk performance Highpoint 1820a

Thu Apr 28 16:00:42 PDT 2005

Scott I've sent this to you as from reading around you did the
original driver conversion and as such may have an idea
on the areas I could look at hope you dont mind.

Ok some real strange going on write performance is ~ 140MB/s:
gstat:
dT: 0.505  flag_I 500000us  sizeof 240  i -1
 L(q)  ops/s    r/s   kBps   ms/r    w/s   kBps   ms/w   %busy Name
    0   1100      4     63   13.2   1096 140313    1.2   57.8| da0
    0   1100      4     63   13.3   1096 140313    1.3   59.3| da0s1

where as read is ~42MB/s
gstat:
dT: 0.505  flag_I 500000us  sizeof 240  i -1
 L(q)  ops/s    r/s   kBps   ms/r    w/s   kBps   ms/w   %busy Name
    1    335    335  42836    2.8      0      0    0.0   93.3| da0
    1    335    335  42836    2.8      0      0    0.0   93.6| da0s1

Some updated figures:
5.4-STABLE Highpoint 1820a RAID 5 ( 5 disk )
Write:
dd if=/dev/zero of=./test.0 bs=64k count=50000
50000+0 records in
50000+0 records out
3276800000 bytes transferred in 25.088439 secs (130609959 bytes/sec)

Read:
dd if=./test.0 of=/dev/null bs=64k count=50000        
50000+0 records in
50000+0 records out
3276800000 bytes transferred in 69.765394 secs (46968845 bytes/sec)

vmstat while doing the above dd:
Read:
vmstat -w 1
 procs      memory      page                    disks     faults      cpu
 r b w     avm    fre  flt  re  pi  po  fr  sr da0 pa0   in   sy  cs us sy id
 0 1 0   56560 1840332    6   2   0   0 872 539   0   0 1625 1859 3468  1  3 96
 0 1 0   56560 1797548    3   0   0   0   3   0 331   0 1949 1449 7071  0  7 93
 0 1 0   56560 1751308    0   0   0   0   0   0 359   0 2071 1581 7600  0  7 93
 0 1 0   56560 1707516    0   0   0   0   0   0 338   0 1974 1488 7219  0  8 92
 0 1 0   56560 1663084    0   0   0   0   0   0 343   0 2003 1509 7300  0 10 90
....

Write:
vmstat -w 1
 procs      memory      page                    disks     faults      cpu
 r b w     avm    fre  flt  re  pi  po  fr  sr da0 pa0   in   sy  cs us sy id
 0 0 1   56560 1912484    6   1   0   0 804 495 1246   0 1627 1864 3454  1  3 96
 0 0 1   56560 1779912    3   0   0   0   3   0 1015   0 3606 4272 18207  0 94  6
 0 0 1   56560 1634632    0   0   0   0   0   0 1123   0 3939 4657 17973  0 51 49
 0 0 1   56560 1507016    0   0   0   0   0   0 996   0 3522 4104 15487  0 46 54
 0 0 1   56560 1367688    0   0   0   0   0   0 1075   0 3748 4469 17131  0 45 55
...

iostat while doing the above dd:
Read:
      tty             da0            pass0             cpu
 tin tout  KB/t tps  MB/s   KB/t tps  MB/s  us ni sy in id
   0   61 127.66 328 40.94   0.00   0  0.00   0  0  7  1 92
   0   61 127.39 365 45.43   0.00   0  0.00   0  0  6  1 92
   0   61 127.13 383 47.56   0.00   0  0.00   0  0  8  1 91
...

Write:
      tty             da0            pass0             cpu
 tin tout  KB/t tps  MB/s   KB/t tps  MB/s  us ni sy in id
   0   62 126.26 1031 127.18   0.00   0  0.00   0  0 34 13 53
   0   63 127.67 1004 125.19   0.00   0  0.00   0  0 35 12 53
   0   63 127.57 1028 128.05   0.00   0  0.00   0  0 38 12 51
   0   63 127.57 1025 127.63   0.00   0  0.00   0  0 34 11 55

System Summary:
Dual AMD 244, 2GB ram, 5 * Seagate SATA 400GB on a
Highpoint 1820a 64Bit PCI-X @ 133Mhz RAID 5 array.

Relavent dmesg:
FreeBSD 5.4-STABLE #0: Wed Apr 27 08:10:14 UTC 2005
    root at test:/usr/src/sys/i386/compile/SMP_200HZ
Timecounter "i8254" frequency 1193182 Hz quality 0
CPU: AMD Opteron(tm) Processor 244 (1794.41-MHz 686-class CPU)
  Origin = "AuthenticAMD"  Id = 0xf5a  Stepping = 10
  Features=0x78bfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,MMX,FXSR,SSE,SSE2>
  AMD Features=0xe0500000<NX,AMIE,LM,DSP,3DNow!>
real memory  = 2146893824 (2047 MB)
avail memory = 2099625984 (2002 MB)
ACPI APIC Table: <PTLTD          APIC  >
FreeBSD/SMP: Multiprocessor System Detected: 2 CPUs
 cpu0 (BSP): APIC ID:  0
 cpu1 (AP): APIC ID:  1
hptmv0: <RocketRAID 182x SATA Controller> mem 0xf8200000-0xf827ffff irq 25 at device 1.0 on pci9
RocketRAID 182x SATA Controller driver Version 1.1
RR182x [0,0]: channel started successfully
RR182x [0,1]: channel started successfully
RR182x [0,2]: channel started successfully
RR182x [0,3]: channel started successfully
RR182x [0,4]: channel started successfully
RR182x: RAID5 write-back enabled
Timecounters tick every 5.000 msec
da0 at hptmv0 bus 0 target 0 lun 0
da0: <RR182x RAID 5 Array 3.00> Fixed Direct Access SCSI-0 device 
da0: 1526216MB (3125690368 512 byte sectors: 255H 63S/T 194565C)

    Steve

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