[openfabrics-ewg] RE: IPoIB/SDP performance graphs for PCI-E RHEL4 U2 i686 Dell PE1850

Amit Krig amitk at mellanox.co.il
Thu Mar 30 07:59:40 PST 2006


 We added some latency improvement in 4.7.600,

________________________________

From: Scott Weitzenkamp (sweitzen) [mailto:sweitzen at cisco.com] 
Sent: Thursday, March 30, 2006 5:35 PM
To: Amit Krig; Tziporet Koren; Matters, Todd; Kamen Bodourov; Moni Levy;
Openfabrics-ewg at openib.org
Cc: Aviram Gutman; Burgert, Robert; Vladimir Sokolovsky; Sujal Das;
Matters, Todd; Roland Dreier; Vu Pham; svbu-ibcg at external.cisco.com;
Ibcg; IBCG
Subject: RE: IPoIB/SDP performance graphs for PCI-E RHEL4 U2 i686 Dell
PE1850


4.7.400.  I see 4.7.600 is out, should that help at all?
 
Scott


________________________________

	From: Amit Krig [mailto:amitk at mellanox.co.il] 
	Sent: Thursday, March 30, 2006 1:04 AM
	To: Scott Weitzenkamp (sweitzen); Tziporet Koren; Matters, Todd;
Kamen Bodourov (kbodouro); Moni Levy; Openfabrics-ewg at openib.org
	Cc: Aviram Gutman; Burgert, Robert; Vladimir Sokolovsky; Sujal
Das; Matters, Todd; Roland Dreier (rdreier); Vu Pham;
svbu-ibcg at external.cisco.com; Ibcg; IBCG
	Subject: RE: IPoIB/SDP performance graphs for PCI-E RHEL4 U2
i686 Dell PE1850
	
	
	Hi Scott,
	 
	Which FW version are you using ?

________________________________

	From: Scott Weitzenkamp (sweitzen) [mailto:sweitzen at cisco.com] 
	Sent: Thursday, March 30, 2006 9:30 AM
	To: Scott Weitzenkamp (sweitzen); Tziporet Koren; Matters, Todd;
Kamen Bodourov; Moni Levy; Openfabrics-ewg at openib.org
	Cc: Amit Krig; Aviram Gutman; Burgert, Robert; Vladimir
Sokolovsky; Sujal Das; Matters, Todd; Roland Dreier; Vu Pham;
svbu-ibcg at external.cisco.com; Ibcg; IBCG
	Subject: IPoIB/SDP performance graphs for PCI-E RHEL4 U2 i686
Dell PE1850
	
	
	We've never been able to get very good IPoIB throughput on these
systems (dual 3.0 GHz EMT64 CPUs).  SDP performance seems very good,
though.
	 
	We're using LionCub Rev C HCAs.
	 
	To summarize:
	 
	min SDP latency: 26 usec
	max SDP throughput: 7.2 Gb/sec
	min IPoIB latency: 32 usec
	max IPoIB throughput: 1.7 Gb/sec
	 
	Scott

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