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From "Muhammad Faisal" <faisalu...@yahoo.com>
Subject Re: Different Cache Disk for different size of objects
Date Tue, 22 Mar 2016 08:53:51 GMT
Noted Reindl!
--




------ Original Message ------
From: "Reindl Harald" <h.reindl@thelounge.net>
To: users@trafficserver.apache.org
Sent: 3/22/2016 1:39:55 AM
Subject: Re: Different Cache Disk for different size of objects

>
>
>Am 21.03.2016 um 19:34 schrieb Muhammad Faisal:
>>Not memory, one way could be that ATS know the type of storage it has,
>>use SSD as temp storage later move large objects to HDD (least 
>>recently
>>used object for e.g) via separate ATS thread/process. I dont why how
>>this will impact the overall system but this can complement RAM Cache
>>performance.
>
>sorry, but that's nonsense
>
>you *surely* don't want GB of data stored on SSD and then move to 
>rotating disks and wear out SSD that way
>
>KISS - Keep It Simple Stupid!
>
>>Some folks has done some tweaks with squid refer to below link:
>>http://www.squid-cache.org/mail-archive/squid-users/201208/0284.html
>>
>>------ Original Message ------
>>From: "Reindl Harald" <h.reindl@thelounge.net>
>>To: users@trafficserver.apache.org
>>Sent: 3/21/2016 11:21:32 PM
>>Subject: Re: Different Cache Disk for different size of objects
>>
>>>
>>>
>>>Am 21.03.2016 um 19:19 schrieb Muhammad Faisal:
>>>>OK. But this feature can be added right? May be in future releases.
>>>>It can improve caching performance by avoiding seek time of disks 
>>>>which
>>>>increase over the period of time with high disk WR.
>>>
>>>but what do you are doing with a 2 GB reponse without a size header 
>>>in
>>>the meantime until you know where to store? buffer it in memory?
>>>
>>>>------ Original Message ------
>>>>From: "Leif Hedstrom" <zwoop@apache.org <mailto:zwoop@apache.org>>
>>>>To: users@trafficserver.apache.org
>>>><mailto:users@trafficserver.apache.org>; "Muhammad Faisal"
>>>><faisalusuf@yahoo.com <mailto:faisalusuf@yahoo.com>>
>>>>Sent: 3/21/2016 9:52:35 PM
>>>>Subject: Re: Different Cache Disk for different size of objects
>>>>>
>>>>>>On Mar 18, 2016, at 3:35 AM, Muhammad Faisal <faisalusuf@yahoo.com
>>>>>><mailto:faisalusuf@yahoo.com>> wrote:
>>>>>>
>>>>>>Hi,
>>>>>>Is this possible to allocate a different disk for different object
>>>>>>sizes? Below is the scenario I'm trying to implement:
>>>>>>Object size <1MB -----> SSD
>>>>>>Object Size > 1MB ----> HDD
>>>>>>This will improve Caching performance as smaller objects will be
>>>>>>served from SSD while larger objects will reside on the HDD.
>>>>>
>>>>>
>>>>>No, not at this point. Part of the issue is that we select 
>>>>>“storage”
>>>>>before going to origin, so you don’t know what the size is going to

>>>>>be
>>>>>before you get the response. And at that point, you (currently) 
>>>>>can’t
>>>>>move to a different storage / volume. But @amc would know best
>>>
>>
>
>--
>Reindl Harald
>the lounge interactive design GmbH
>A-1060 Vienna, Hofmühlgasse 17
>CTO / CISO / Software-Development
>m: +43 (676) 40 221 40, p: +43 (1) 595 3999 33
>icq: 154546673, http://www.thelounge.net/
>
>http://www.thelounge.net/signature.asc.what.htm
>


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