* [dpdk-dev] Query regarding EAL -m option
@ 2021-08-06 9:06 Gagandeep Singh
2021-08-06 19:05 ` Dmitry Kozlyuk
0 siblings, 1 reply; 2+ messages in thread
From: Gagandeep Singh @ 2021-08-06 9:06 UTC (permalink / raw)
To: dev, anatoly.burakov; +Cc: Hemant Agrawal, Nipun Gupta
Hi,
I can understand "-m" option can be used in "-legacy-mode" to limit the memory reservation during the eal_init.
Is it true for dynamic memory allocation mode as well that dynamically allocated memory cannot be more than memory specified in "-m"? Or this option is valid only for legacy mode?
Regards,
Gagab
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [dpdk-dev] Query regarding EAL -m option
2021-08-06 9:06 [dpdk-dev] Query regarding EAL -m option Gagandeep Singh
@ 2021-08-06 19:05 ` Dmitry Kozlyuk
0 siblings, 0 replies; 2+ messages in thread
From: Dmitry Kozlyuk @ 2021-08-06 19:05 UTC (permalink / raw)
To: Gagandeep Singh; +Cc: dev, anatoly.burakov, Hemant Agrawal, Nipun Gupta
2021-08-06 09:06 (UTC+0000), Gagandeep Singh:
> Hi,
>
> I can understand "-m" option can be used in "-legacy-mode" to limit the memory reservation during the eal_init.
> Is it true for dynamic memory allocation mode as well that dynamically allocated memory cannot be more than memory specified in "-m"? Or this option is valid only for legacy mode?
>
> Regards,
> Gagab
Hi Gagab,
In any mode -m specifies how much memory to request from the OS during EAL
startup. In legacy mode, this will be the maximum amount of memory DPDK can
allocate. In dynamic mode, this is just initial amount that also will never
be freed back to the system (while everything above this will).
^ permalink raw reply [flat|nested] 2+ messages in thread
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