Thanks! Appreciate the quick answer.
On 8/13/18 3:25 PM, IBM Spectrum Scale wrote:
Hi Aaron,
I just searched the core GPFS source code. I didn't find TCP_QUICKACKbeing used
explicitly.
Regards, The Spectrum Scale (GPFS) team
------------------------------------------------------------------------------------------------------------------
If you feel that your question can benefit other users of Spectrum Scale
(GPFS), then please post it to the public IBM developerWroks Forum at
https://www.ibm.com/developerworks/community/forums/html/forum?id=11111111-0000-0000-0000-000000000479.
If your query concerns a potential software error in Spectrum Scale (GPFS) and
you have an IBM software maintenance contract please contact 1-800-237-5511 in
the United States or your local IBM Service Center in other countries.
The forum is informally monitored as time permits and should not be used for
priority messages to the Spectrum Scale (GPFS) team.
Inactive hide details for "Knister, Aaron S. (GSFC-606.2)[InuTeq, LLC]" ---08/13/2018
02:48:53 PM---This is a question mostly f"Knister, Aaron S. (GSFC-606.2)[InuTeq, LLC]"
---08/13/2018 02:48:53 PM---This is a question mostly for the devs. but really for anyone who can
answer. Does GPFS use the TCP_
From: "Knister, Aaron S. (GSFC-606.2)[InuTeq, LLC]" <[email protected]>
To: gpfsug main discussion list <[email protected]>
Date: 08/13/2018 02:48 PM
Subject: [gpfsug-discuss] TCP_QUICKACK
Sent by: [email protected]
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
This is a question mostly for the devs. but really for anyone who can answer.
Does GPFS use the TCP_QUICKACK socket flag on Linux?
I’m debugging an IPoIB problem exacerbated by GPFS and based on the packet
captures it seems as though the answer might be yes, but I’m curious if GPFS is
explicitly doing this or if there’s just a timing window in the RPC behavior
that just makes it look that way.
-Aaron
_______________________________________________
gpfsug-discuss mailing list
gpfsug-discuss at spectrumscale.org
http://gpfsug.org/mailman/listinfo/gpfsug-discuss
_______________________________________________
gpfsug-discuss mailing list
gpfsug-discuss at spectrumscale.org
http://gpfsug.org/mailman/listinfo/gpfsug-discuss
--
Aaron Knister
NASA Center for Climate Simulation (Code 606.2)
Goddard Space Flight Center
(301) 286-2776
_______________________________________________
gpfsug-discuss mailing list
gpfsug-discuss at spectrumscale.org
http://gpfsug.org/mailman/listinfo/gpfsug-discuss
