| From: | Shaun Thomas <sthomas(at)optionshouse(dot)com> |
|---|---|
| To: | Scott Marlowe <scott(dot)marlowe(at)gmail(dot)com> |
| Cc: | Jan Nielsen <jan(dot)sture(dot)nielsen(at)gmail(dot)com>, <pgsql-performance(at)postgresql(dot)org> |
| Subject: | Re: local-storage versus SAN sequential read performance comparison |
| Date: | 2012-05-21 15:50:04 |
| Message-ID: | 4FBA642C.6040501@optionshouse.com |
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| Thread: | |
| Lists: | pgsql-performance |
On 05/21/2012 10:41 AM, Scott Marlowe wrote:
> How fast is the link to your SAN? If it's Gigabit, then 80MB/s would
> be pretty reasonable.
Wow, I didn't even think of that. I was looking up specs on the SAN. :)
Those stats are pretty horrible for sequential reads. The SAN should
improve random reads, not mercilessly ruin sequential.
That does sound like the problem, though.
--
Shaun Thomas
OptionsHouse | 141 W. Jackson Blvd. | Suite 500 | Chicago IL, 60604
312-444-8534
sthomas(at)optionshouse(dot)com
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