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Date: Thu, 26 Dec 2013 10:33:26 +0200 From: Hadar Hen Zion <hadarh@...lanox.com> To: Richard Cochran <richardcochran@...il.com> CC: Shawn Bohrer <shawn.bohrer@...il.com>, "David S. Miller" <davem@...emloft.net>, Or Gerlitz <ogerlitz@...lanox.com>, Amir Vadai <amirv@...lanox.com>, "netdev@...r.kernel.org" <netdev@...r.kernel.org>, "tomk@...advisors.com" <tomk@...advisors.com>, Shawn Bohrer <sbohrer@...advisors.com> Subject: Re: [PATCH net-next 1/2] mlx4_en: Add PTP hardware clock On 12/26/2013 10:26 AM, Hadar Hen Zion wrote: > On 12/25/2013 1:53 PM, Richard Cochran wrote: >> On Tue, Dec 24, 2013 at 03:58:06PM +0200, Hadar Hen Zion wrote: >>> >>> The spin locks case such a bottleneck since I'm using multiple >>> streams in my performance test. RSS mechanism scattered the streams >>> between multiple RX rings while each RX ring is bound to a different >>> cup. >>> The describe scenario cause lock contention between the different RX >>> rings. >>> >>> Performance drops from 37.8 Gbits/sec to 32.1 Gbits/sec when spin >>> locks are added and goes back to 37.8 Gbits/sec when using >>> read/write locks. >> >> And you are time stamping every received packet? >> >> Thanks, >> Richard >> > > Yes, current implementation time stamping every received packet. > I do think time stamping only packets from the relevant socket will make > more sense but SIOCSHWTSTAMP ioctl provides only the device without any > socket attributes. > > Thanks, > Hadar > -- > To unsubscribe from this list: send the line "unsubscribe netdev" in > the body of a message to majordomo@...r.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html Is there a way to time stamping packets per socket? Thanks, Hadar -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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