[PVE-User] Proxmox + ZFS: Performance issues

[Laurent Dumont]

Just to check, since I don't have a key for the Enterprise repositories, 
should I use the repositories from here ? : 
http://pve.proxmox.com/wiki/Package_repositories#Proxmox_VE_No-Subscription_Repository

Thanks,

Laurent

On 4/24/2016 3:03 PM, Ralf wrote:
> Some Western Digital Green stuff:
>
> [    2.406419] scsi 2:0:0:0: Direct-Access     ATA      WDC WD5000AADS-0
> 0A01 PQ: 0 ANSI: 5
> [    2.406766] sd 2:0:0:0: [sda] 976773168 512-byte logical blocks: (500
> GB/466 GiB)
> [    2.406794] sd 2:0:0:0: Attached scsi generic sg0 type 0
> [    2.406845] sd 2:0:0:0: [sda] Write Protect is off
> [    2.406848] sd 2:0:0:0: [sda] Mode Sense: 00 3a 00 00
> [    2.406884] sd 2:0:0:0: [sda] Write cache: disabled, read cache:
> enabled, doesn't support DPO or FUA
> [    2.407121] scsi 3:0:0:0: Direct-Access     ATA      WDC WD5000AADS-0
> 0A01 PQ: 0 ANSI: 5
> [    2.407342] sd 3:0:0:0: [sdb] 976773168 512-byte logical blocks: (500
> GB/466 GiB)
> [    2.407417] sd 3:0:0:0: Attached scsi generic sg1 type 0
> [    2.407424] sd 3:0:0:0: [sdb] Write Protect is off
> [    2.407428] sd 3:0:0:0: [sdb] Mode Sense: 00 3a 00 00
> [    2.407459] sd 3:0:0:0: [sdb] Write cache: disabled, read cache:
> enabled, doesn't support DPO or FUA
>
> According to google, that's a Western Digital Green 500GB, S-ATA 300,
> 32MiB Cache
>
>    Ralf
>
>
> On 04/24/2016 08:57 PM, Christian Kivalo wrote:
>> Am 24. April 2016 19:51:21 MESZ, schrieb Ralf <ralf+pve at ramses-pyramidenbau.de>:
>>> Hi,
>>>
>>> zil.. That's an additional ZFS cache, right?
>>> Shouldn't it be slightly faster, even without additional caches?
>> The ZIL is used for writes. Not for reads.
>>
>> That will not help with your slow reads.
>>
>> It should be faster even without caches.
>>
>> What drives are you using?
>>
>
>
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