[spp] [Bug 443] spp primary takes up the complete hugepages

[bugzilla at dpdk.org]

https://bugs.dpdk.org/show_bug.cgi?id=443

--- Comment #21 from Hideyuki Yamashita (yamashita.hideyuki at ntt-tx.co.jp) ---
Hello Vipin,

I understand that this ticket is related with "hugepage usage"
as ticket title tells.

I understand that hugepage usage does NOT increase
regardless of number of secondary process.

The following is the result
- hugepage in system is 16G
- primary uses 8G in node0 and 8G in node1
- two secondary processes can start without increasing hugapage usage

What is the problem?

tx_h-yamashita at R730n10:~$ grep HugePages_ /proc/meminfo
HugePages_Total: 16
HugePages_Free: 0
HugePages_Rsvd: 0
HugePages_Surp: 0
tx_h-yamashita at R730n10:~$ numastat -p spp_

Per-node process memory usage (in MBs)
tx_h-yamashita at R730n10:~$ sudo numastat -p spp_
[sudo] password for tx_h-yamashita:

Per-node process memory usage (in MBs)
PID Node 0 Node 1 Total
------------------- --------------- --------------- ---------------
36244 (sudo) 1.23 6.30 7.53
36245 (spp_primary) 8196.33 8203.80 16400.13
36255 (sudo) 0.20 9.52 9.73
------------------- --------------- --------------- ---------------
Total 8197.76 8219.62 16417.38
tx_h-yamashita at R730n10:~$
tx_h-yamashita at R730n10:~$
tx_h-yamashita at R730n10:~$
tx_h-yamashita at R730n10:~$
tx_h-yamashita at R730n10:~$
tx_h-yamashita at R730n10:~$
tx_h-yamashita at R730n10:~$ grep HugePages_ /proc/meminfo
HugePages_Total: 16
HugePages_Free: 0
HugePages_Rsvd: 0
HugePages_Surp: 0
tx_h-yamashita at R730n10:~$ sudo numastat -p spp_

Per-node process memory usage (in MBs)
PID Node 0 Node 1 Total
------------------- --------------- --------------- ---------------
36244 (sudo) 1.23 6.30 7.53
36245 (spp_primary) 8196.33 8203.80 16400.13
36261 (sudo) 0.20 9.52 9.71
36262 (spp_nfv) 8206.14 8194.36 16400.50
36267 (sudo) 0.33 7.02 7.34
------------------- --------------- --------------- ---------------
Total 16404.22 16420.99 32825.21
tx_h-yamashita at R730n10:~$
tx_h-yamashita at R730n10:~$
tx_h-yamashita at R730n10:~$
tx_h-yamashita at R730n10:~$
tx_h-yamashita at R730n10:~$
tx_h-yamashita at R730n10:~$
tx_h-yamashita at R730n10:~$ grep HugePages_ /proc/meminfo
HugePages_Total: 16
HugePages_Free: 0
HugePages_Rsvd: 0
HugePages_Surp: 0
tx_h-yamashita at R730n10:~$ sudo numastat -p spp_

Per-node process memory usage (in MBs)
PID Node 0 Node 1 Total
------------------- --------------- --------------- ---------------
36244 (sudo) 1.23 6.30 7.53
36245 (spp_primary) 8196.33 8203.80 16400.13
36261 (sudo) 0.20 9.52 9.71
36262 (spp_nfv) 8206.14 8194.36 16400.50
36273 (sudo) 0.20 9.68 9.89
36274 (spp_nfv) 8206.15 8194.17 16400.32
36279 (sudo) 1.23 6.29 7.52
------------------- --------------- --------------- ---------------
Total 24611.48 24624.12 49235.60
tx_h-yamashita at R730n10:~$

BR,
Hideyuki Yamashita

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