Hello ,All;
When I used fio benchmark single HDD, the write speed could
reached 700~800MB/s
The HDD model is WD2002FYPS-18U1B0 , 7200rpm, 2TB
In my raid config, there is only one HDD in every Raid0
group. like jbod.
And then, I modify numjobs=8 to numjobs=1. the benchmark
result is ok , it 's about 100MB/s.
Does any wrong in my fio config ?
Raid controller: PERC 6/E (LSI SAS1068E)
OS : CentOS 5.5 upgrade to 2.6.18-308.8.2.el5 x86_64
# fio -v
fio 2.0.7
# cat /tmp/fio2.cfg
[global]
rw=write
ioengine=sync
size=100g
numjobs=8
bssplit=128k/20:256k/20:512k/20:1024k/40
nrfiles=2
iodepth=128
lockmem=1g
zero_buffers
timeout=120
direct=1
thread
[sdb]
filename=/dev/sdb
run
#fio /tmp/fio2.cfg
Run status group 0 (all jobs):
WRITE: io=68235MB, aggrb=582254KB/s, minb=72636KB/s, maxb=73052KB/s,
mint=120001msec, maxt=120003msec
#iostat -x 2
Device: rrqm/s wrqm/s r/s w/s rMB/s wMB/s avgrq-sz
avgqu-sz await svctm %util
sdb 0.00 0.00 0.00 2399.50 0.00 571.38
487.67 18.23 7.60 0.42 100.05
avg-cpu: %user %nice %system %iowait %steal %idle
2.38 0.00 1.12 19.00 0.00 77.50
Device: rrqm/s wrqm/s r/s w/s rMB/s wMB/s avgrq-sz
avgqu-sz await svctm %util
sdb 0.00 0.00 0.00 3231.00 0.00 771.19
488.82 18.29 5.66 0.31 100.05
avg-cpu: %user %nice %system %iowait %steal %idle
2.19 0.00 1.06 19.36 0.00 77.39
Device: rrqm/s wrqm/s r/s w/s rMB/s wMB/s avgrq-sz
avgqu-sz await svctm %util
sdb 0.00 0.00 0.00 3212.00 0.00 769.94
490.92 18.69 5.82 0.31 100.05
avg-cpu: %user %nice %system %iowait %steal %idle
1.50 0.00 0.69 20.06 0.00 77.75
Device: rrqm/s wrqm/s r/s w/s rMB/s wMB/s avgrq-sz
avgqu-sz await svctm %util
sdb 0.00 0.00 0.00 1937.50 0.00 466.06
492.64 19.18 9.91 0.52 100.05
avg-cpu: %user %nice %system %iowait %steal %idle
2.06 0.00 0.94 19.94 0.00 77.06
Device: rrqm/s wrqm/s r/s w/s rMB/s wMB/s avgrq-sz
avgqu-sz await svctm %util
sdb 0.00 0.00 0.00 2789.00 0.00 668.50
490.89 18.72 6.71 0.36 100.05
Here is my Raid controller config:
this is sdb:
DISK GROUP: 0
Number of Spans: 1
SPAN: 0
Span Reference: 0x00
Number of PDs: 1
Number of VDs: 1
Number of dedicated Hotspares: 0
Virtual Drive Information:
Virtual Drive: 0 (Target Id: 0)
Name :
RAID Level : Primary-0, Secondary-0, RAID Level Qualifier-0
Size : 1.818 TB
State : Optimal
Stripe Size : 64 KB
Number Of Drives : 1
Span Depth : 1
Default Cache Policy: WriteBack, ReadAheadNone, Direct, No Write Cache
if Bad BBU
Current Cache Policy: WriteBack, ReadAheadNone, Direct, No Write Cache
if Bad BBU
Access Policy : Read/Write
Disk Cache Policy : Disk's Default
Encryption Type : None
Physical Disk Information:
Physical Disk: 0
Enclosure Device ID: 16
Slot Number: 0
Device Id: 31
Sequence Number: 4
Media Error Count: 0
Other Error Count: 0
Predictive Failure Count: 0
Last Predictive Failure Event Seq Number: 0
PD Type: SATA
Raw Size: 1.819 TB [0xe8e088b0 Sectors]
Non Coerced Size: 1.818 TB [0xe8d088b0 Sectors]
Coerced Size: 1.818 TB [0xe8d00000 Sectors]
Firmware state: Online, Spun Up
SAS Address(0): 0x5a4badb20bf57f88
Connected Port Number: 4(path0)
Inquiry Data: WD-WCAVY1070166WDC WD2002FYPS-18U1B0
05.05G07
FDE Capable: Not Capable
FDE Enable: Disable
Secured: Unsecured
Locked: Unlocked
Needs EKM Attention: No
Foreign State: None
Device Speed: Unknown
Link Speed: Unknown
Media Type: Hard Disk Device
this is sdc :
DISK GROUP: 1
Number of Spans: 1
SPAN: 0
Span Reference: 0x01
Number of PDs: 1
Number of VDs: 1
Number of dedicated Hotspares: 0
Virtual Drive Information:
Virtual Drive: 0 (Target Id: 1)
Name :
RAID Level : Primary-0, Secondary-0, RAID Level Qualifier-0
Size : 1.818 TB
State : Optimal
Stripe Size : 64 KB
Number Of Drives : 1
Span Depth : 1
Default Cache Policy: WriteBack, ReadAheadNone, Direct, No Write Cache
if Bad BBU
Current Cache Policy: WriteBack, ReadAheadNone, Direct, No Write Cache
if Bad BBU
Access Policy : Read/Write
Disk Cache Policy : Disk's Default
Encryption Type : None
Physical Disk Information:
Physical Disk: 0
Enclosure Device ID: 16
Slot Number: 1
Device Id: 28
Sequence Number: 4
Media Error Count: 0
Other Error Count: 0
Predictive Failure Count: 0
Last Predictive Failure Event Seq Number: 0
PD Type: SATA
Raw Size: 1.819 TB [0xe8e088b0 Sectors]
Non Coerced Size: 1.818 TB [0xe8d088b0 Sectors]
Coerced Size: 1.818 TB [0xe8d00000 Sectors]
Firmware state: Online, Spun Up
SAS Address(0): 0x5a4badb20bf57f87
Connected Port Number: 4(path0)
Inquiry Data: WD-WCAVY1090906WDC WD2002FYPS-18U1B0
05.05G07
FDE Capable: Not Capable
FDE Enable: Disable
Secured: Unsecured
Locked: Unlocked
Needs EKM Attention: No
Foreign State: None
Device Speed: Unknown
Link Speed: Unknown
Media Type: Hard Disk Device
.......................................................
Best Regards
HOmer Li
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