DPDK 22.11.2 requires too much VIRT memory, how to reduce

[Lombardo, Ed]

Hi Dmitry,
I finally finished testing all the options and found the VIRT value can be reduced from 66 GB to 16 GB with --legacy-mem setting in EAL init argument.  So I therefore had to increase the VM memory from 16 GB to 24 GB (instead of 80 GB without this setting).

I wonder what do we give up with this setting?

All the other settings I tried and combinations of these had no impact (socket-limit=2048, single-file-segments, no-shconf, and no-telemetry) on VIRT memory.

Thanks,
Ed

-----Original Message-----
From: Dmitry Kozlyuk <dmitry.kozliuk at gmail.com> 
Sent: Wednesday, November 8, 2023 6:06 PM
To: Lombardo, Ed <Ed.Lombardo at netscout.com>
Cc: users <users at dpdk.org>
Subject: Re: DPDK 22.11.2 requires too much VIRT memory, how to reduce

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2023-11-08 22:26 (UTC+0000), Lombardo, Ed:
> Hi Dmitry,
> I went to the dpdk.org and I don’t see DPDK 23.11,
> 
> [cid:image001.png at 01DA1268.AA1AC1F0]
> 
> Do you have a pre-release version?

Sorry for the typo, I meant v22.11.2 that you're testing.