From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss-
boun...@opensolaris.org] On Behalf Of Jim Klimov
Got me wondering: how many reads of a block from spinning rust
suffice for it to ultimately get into L2ARC? Just one so it
gets into a recent-read list of the ARC and then expires
On 09/26/2012 01:14 PM, Edward Ned Harvey
(opensolarisisdeadlongliveopensolaris) wrote:
From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss-
boun...@opensolaris.org] On Behalf Of Jim Klimov
Got me wondering: how many reads of a block from spinning rust
suffice for it to ultimately
On Sep 26, 2012, at 4:28 AM, Sašo Kiselkov skiselkov...@gmail.com wrote:
On 09/26/2012 01:14 PM, Edward Ned Harvey
(opensolarisisdeadlongliveopensolaris) wrote:
From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss-
boun...@opensolaris.org] On Behalf Of Jim Klimov
Got me
2012-09-11 16:29, Edward Ned Harvey
(opensolarisisdeadlongliveopensolaris) wrote:
From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss-
boun...@opensolaris.org] On Behalf Of Dan Swartzendruber
My first thought was everything is
hitting in ARC, but that is clearly not the case, since it
On 9/25/2012 3:38 PM, Jim Klimov wrote:
2012-09-11 16:29, Edward Ned Harvey
(opensolarisisdeadlongliveopensolaris) wrote:
From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss-
boun...@opensolaris.org] On Behalf Of Dan Swartzendruber
My first thought was everything is
hitting in ARC,
On 09/25/2012 09:38 PM, Jim Klimov wrote:
2012-09-11 16:29, Edward Ned Harvey
(opensolarisisdeadlongliveopensolaris) wrote:
From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss-
boun...@opensolaris.org] On Behalf Of Dan Swartzendruber
My first thought was everything is
hitting in
] Interesting question about L2ARC
On 09/11/2012 04:06 PM, Dan Swartzendruber wrote:
Thanks a lot for clarifying how this works.
You're very welcome.
Since I'm quite happy
having an SSD in my workstation, I will need to purchase another SSD
:) I'm wondering if it makes more sense to buy two SSDs
Dan,
If you're not already familiar with it, I find the following command useful. It
shows the realtime total read commands, number hitting/missing ARC, number
hitting missing L2ARC, breakdown of MRU/MFU etc.
arcstat_v2.pl -f
From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss-
boun...@opensolaris.org] On Behalf Of Dan Swartzendruber
My first thought was everything is
hitting in ARC, but that is clearly not the case, since it WAS gradually
filling up
the cache device.
When things become colder in
: [zfs-discuss] Interesting question about L2ARC
From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss-
boun...@opensolaris.org] On Behalf Of Dan Swartzendruber
My first thought was everything is
hitting in ARC, but that is clearly not the case, since it WAS
gradually filling up
Of James H
Sent: Tuesday, September 11, 2012 5:09 AM
To: zfs-discuss@opensolaris.org
Subject: Re: [zfs-discuss] Interesting question about L2ARC
Dan,
If you're not already familiar with it, I find the following command useful.
It shows the realtime total read commands, number hitting/missing ARC
On 09/11/2012 03:32 PM, Dan Swartzendruber wrote:
I think you may have a point. I'm also inclined to enable prefetch caching
per Saso's comment, since I don't have massive throughput - latency is more
important to me.
I meant to say the exact opposite: enable prefetch caching only if your
: Re: [zfs-discuss] Interesting question about L2ARC
On 09/11/2012 03:32 PM, Dan Swartzendruber wrote:
I think you may have a point. I'm also inclined to enable prefetch
caching per Saso's comment, since I don't have massive throughput -
latency is more important to me.
I meant to say
On 09/11/2012 03:41 PM, Dan Swartzendruber wrote:
LOL, I actually was unclear not you. I understood what you were saying,
sorry for being unclear. I have 4 disks in raid10, so my max random read
throughput is theoretically somewhat faster than the L2ARC device, but I
never really do that
-Original Message-
From: Sašo Kiselkov [mailto:skiselkov...@gmail.com]
Sent: Tuesday, September 11, 2012 9:52 AM
To: Dan Swartzendruber
Cc: 'James H'; zfs-discuss@opensolaris.org
Subject: Re: [zfs-discuss] Interesting question about L2ARC
On 09/11/2012 03:41 PM, Dan Swartzendruber
On 09/11/2012 04:06 PM, Dan Swartzendruber wrote:
Thanks a lot for clarifying how this works.
You're very welcome.
Since I'm quite happy
having an SSD in my workstation, I will need to purchase another SSD :) I'm
wondering if it makes more sense to buy two SSDs of half the size (e.g.
-Original Message-
From: Sašo Kiselkov [mailto:skiselkov...@gmail.com]
Sent: Tuesday, September 11, 2012 10:12 AM
To: Dan Swartzendruber
Cc: 'James H'; zfs-discuss@opensolaris.org
Subject: Re: [zfs-discuss] Interesting question about L2ARC
On 09/11/2012 04:06 PM, Dan Swartzendruber
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