[Lustre-discuss] Lustre featured on podcast (HT: Andreas Dilger)

[Mag Gam]

its really bizzare because you can read all the manuals in the world
and read all the responses on the mailing list, but 30 mins of a good
developers time is priceless. I never even knew lnet didn't use tcp!
Thats great stuff


On Mon, Aug 3, 2009 at 10:32 PM, Kevin Van Maren<Kevin.Vanmaren at sun.com> wrote:
> Yes, originally designed so multiple send() calls with small data have a
> chance to be combined by TCP before being sent over the network -- improve
> behavior of applications doing small writes.
>
> Setting tcp_nodelay disables Nagle, as the additional latency can hurt some
> interactive session performance.
>
> Kevin
>
>
> On Aug 4, 2009, at 10:35 AM, Brock Palen <brockp at umich.edu> wrote:
>
>> http://en.wikipedia.org/wiki/Nagle%27s_algorithm
>>
>> Looks like you intentionally hold up data to try to make fatter
>> payloads in packets so they are not 99% header/crc data.  Sounds like
>> a way to make latency bad.
>>
>> Brock Palen
>> www.umich.edu/~brockp
>> Center for Advanced Computing
>> brockp at umich.edu
>> (734)936-1985
>>
>>
>>
>> On Aug 3, 2009, at 8:20 PM, Mag Gam wrote:
>>
>>> Very nice.
>>>
>>> 15:54, what is "Nagle" ?
>>>
>>> He didn't say anything about SNS, but changeLogs seems very promising!
>>>
>>>
>>>
>>> On Mon, Aug 3, 2009 at 8:55 AM, Brock Palen<brockp at umich.edu> wrote:
>>>>
>>>> Thanks to Andreas for taking an hour out to talk with Jeff Squyres
>>>> and
>>>> myself (Brock Palen) about the Lustre cluster filesystem on our
>>>> podcast www.rce-cast.com,
>>>>
>>>> You can find the whole show at:
>>>>
>>>> http://www.rce-cast.com/index.php/Podcast/rce-14-lustre-cluster-filesystem.html
>>>>
>>>> Thanks again!
>>>> If any of you have requests of topics you would like to hear please
>>>> let me know!
>>>>
>>>> Brock Palen
>>>> www.umich.edu/~brockp
>>>> Center for Advanced Computing
>>>> brockp at umich.edu
>>>> (734)936-1985
>>>>
>>>>
>>>>
>>>> _______________________________________________
>>>> Lustre-discuss mailing list
>>>> Lustre-discuss at lists.lustre.org
>>>> http://lists.lustre.org/mailman/listinfo/lustre-discuss
>>>>
>>>
>>>
>>
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>