[Gluster-users] 3.2.2 Performance Issue

Mohit Anchlia mohitanchlia at gmail.com
Tue Aug 9 22:19:07 PDT 2011


And can you also give the mount options of gluster fs?

On Tue, Aug 9, 2011 at 4:41 PM, Joey McDonald <joey at scare.org> wrote:
>
>
> On Tue, Aug 9, 2011 at 5:40 PM, Joey McDonald <joey at scare.org> wrote:
>>
>> Hi Pavan,
>> Thanks for your quick reply, comments inline:
>>
>>>
>>> 1. Are these baremetal systems or are they Virtual machines ?
>>
>> Bare metal systems.
>>
>>>
>>> 2. What is the amount of RAM of each of these systems ?
>>
>> They all have 4194304 kB of memory.
>>
>>>
>>> 3. How many CPUs do they have ?
>>
>> They each have 8 procs.
>>
>>>
>>> 4. Can you also perform the dd on /gluster as opposed to /root to check
>>> the backend performance ?
>>
>> Sure, here is that output:
>>
>> [root at vm-container-0-0 ~]# dd if=/dev/zero of=/gluster/dd_test.img bs=1M
>> count=2000
>> 2000+0 records in
>> 2000+0 records out
>> 2097152000 bytes (2.1 GB) copied, 6.65193 seconds, 315 MB/s
>>
>>>
>>> 5. What is your disk backend ? Is it direct attached or is it an array ?
>>
>> Direct attached, /gluster is /dev/sdb1, 1TB SATA drive (as is /dev/sda):
>> [root at vm-container-0-0 ~]# hdparm -i /dev/sdb
>> /dev/sdb:
>>  Model=WDC WD1002FBYS-02A6B0                   , FwRev=03.00C06, SerialNo=
>>     WD-WMATV5311442
>>  Config={ HardSect NotMFM HdSw>15uSec SpinMotCtl Fixed DTR>5Mbs FmtGapReq
>> }
>>  RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=50
>>  BuffType=unknown, BuffSize=32767kB, MaxMultSect=16, MultSect=?0?
>>  CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=268435455
>>  IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
>>  PIO modes:  pio0 pio3 pio4
>>  DMA modes:  mdma0 mdma1 mdma2
>>  UDMA modes: udma0 udma1 udma2
>>  AdvancedPM=no WriteCache=enabled
>>  Drive conforms to: Unspecified:  ATA/ATAPI-1 ATA/ATAPI-2 ATA/ATAPI-3
>> ATA/ATAPI-4 ATA/ATAPI-5 ATA/ATAPI-6 ATA/ATAPI-7
>>  * signifies the current active mode
>>
>>>
>>> 6. What is the backend filesystem ?
>>
>> ext3
>>
>>>
>>> 7. Can you run a simple scp of about 10M between any two of these systems
>>> and report the speed ?
>>
>>  Sure, output:
>> [root at vm-container-0-1 ~]# scp vm-container-0-0:/gluster/dd_test.img .
>> Warning: Permanently added 'vm-container-0-0' (RSA) to the list of known
>> hosts.
>> root at vm-container-0-0's password:
>> dd_test.img
>>                                                               100% 2000MB
>>  39.2MB/s   00:51
>>
>>    --joey
>>
>>
>
>
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