ASR9000 RSP memory usage

[cedrictabary1]

Memory usage is short on my A9K-RSP-4G however I just noticed only 2G out of 4G is really available !

Physical Memory: 4096M total (452M available)
 Application Memory : 3904M (452M available)
 Image: 62M (bootram: 62M)
 Reserved: 128M, IOMem: 2028M, flashfsys: 0
 Total shared window: 155M

IOMem : IO memory Currently used as a backup for packet memory.

What is this exactly?

Is that possible to disable this "backup" memory and use 4G for the system?

[Venkatesh Perumal]

The IOMEM is the chunk of DRAM memory dedicated to network modules/interfaces I/O.

The percentage of DRAM allocated to IOMEM can be adjusted using "memory-size iomem" commands and this works in global configuration mode.

Smart init is a tool that calculates IOMEM at boot time automatically. Smart init is disabled when "memory-size iomem" is configured.

please refer to the datasheet of the device to verify the compatability of the command and detail.

Regards,

-Do rate if it helps.

[cedrictabary1]

I did not find this command on IOS XR, maybe this works only on classic IOS.

Any clue on ASR9K ?

[Venkatesh Perumal]

the command doesnt seems to be supported, couldnt find a relevent doc for the same, pls check with TAC if is supported or for other alternative.

regards,