[Gluster-users] 3.2.2 Performance Issue

[Joey McDonald]

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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