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тАО01-11-2006 04:05 PM
тАО01-11-2006 04:05 PM
performance comparison between rp7410 and rp8420
Can I get the benchmarking tests and results for rp7410 and rp8420 servers.Is there any particular factor so that we can compare the performance?.
Thanks and regards
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тАО01-11-2006 04:28 PM
тАО01-11-2006 04:28 PM
Re: performance comparison between rp7410 and rp8420
if u want to benchmark against other servers, visit http://www.spec.org/
regards.
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тАО01-11-2006 07:41 PM
тАО01-11-2006 07:41 PM
Re: performance comparison between rp7410 and rp8420
Check this page,
http://www.abtechsys.com/hp_servers/hp_servers.html
WIth Regards,
Siva.
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тАО01-12-2006 12:58 AM
тАО01-12-2006 12:58 AM
Re: performance comparison between rp7410 and rp8420
Well, the 7410 has the older PA8700+ single core CPUs whereas the 8420 has the newer dual core PA8800. So inherently the 8420 will be faster and coupled with the fact that it could have 4 times the CPU count, it would smoke the 7410.
Now if it was 7420 vs 8420 then it would be a 2 - to - 1 battle.
They're essentially the same speed system - it's just that the 8420 is twice the "size" of a 7420.
My $0.02,
Jeff
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тАО01-13-2006 06:28 AM
тАО01-13-2006 06:28 AM
Re: performance comparison between rp7410 and rp8420
Are you exploring about the possibility if sticking with older hardware i.e. rp7410 with 875Mhz CPUs viz a vix PA8800 CPU Systems like the rp8420? Well, the rp8420 and newer PA8800/8900 systems have supposedly faster memory interfaces, busses, etc - but I suppose the difference will not be that great in certain situations.
Remember dual-core is not the same as 2 separate CPU sockets.
So in a situation wherein say an rp7410 with 8x875Mhz cpus compared with any PA8800 system with 4 CPU sockets or 8x1000Mhz CPU cores will not be that significantly far out.
I am seeing some proof to this on our environments - which are running your vanilla Oracle DB payload. Sama SAN/Disks .. same speed I/O channels used.
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тАО01-13-2006 11:34 AM
тАО01-13-2006 11:34 AM
Re: performance comparison between rp7410 and rp8420
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тАО01-16-2006 12:53 AM
тАО01-16-2006 12:53 AM
Re: performance comparison between rp7410 and rp8420
This is the reason why most RDBMS vendors and other software vendors have revised their pricing policy. On high end RISC based systems - vendors now treat each "core" as simply .75 of a whole CPU core on non-multi core CPUs. Other software vendors even treat each core as .25 of a whole non-multi core CPU.
I believe there was once literature that claims only a 30-40% performance improvement in upgrading from PA8700+ (single Core 875Mhz) to Dual Core 2x1000 Mhz Cores on the PA8800 based systems.
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тАО01-16-2006 01:26 PM
тАО01-16-2006 01:26 PM
Re: performance comparison between rp7410 and rp8420
The SPECint_rate2000 for the rp8420 fully loaded with 1GHz pa-8800 is 266 (278 peak).
There are no published numbers for the rp7410 with 875MHz, but Superdome with 64 of those 875MHz pa-8700+ processors only got 394 (413 peak). If I look at how the SD scaled (I have to use the 750MHz processors), it was almost linear with the 16 processor SD getting 26% of the 64 processor SD. So since the rp7410 is only 1/8 of a SD, I would suggest that it is reasonable to extrapolate a best case of about 14% for the rp7410 versus the same chips in the 64 processor SD. This would put the 8x875MHz rp7410 somewhere about 55 (58 peak). I would estimate the error to be plus or minus under 5. Thus for this embarassingly parallel set of tasks that runs mostly out of cache, there is about the 4X gain one might expect from the maximum configuration for a rp7410 versus the rp8420. Most everyone, including myself, would not consider the SPECint_rate2000 benchmark to be a reasonable comparison to real world applications, which would show much less of a gain. But this does show that the potential is there for improved performance in certain cases. Again, "It depends."