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charset="iso-8859-9" Content-Transfer-Encoding: quoted-printable Hello all, I think there is a memory leak for KNI. Firstly, try to active trace mod=FCle to follow memory management but could= not. =DDt doesn't create file and dont have any clue. Run Command : -c dpdk_core_mask -d librte_net_virtio.so -d librte_mbuf.so -= d librte_mempool.so -d librte_mempool_ring.so -d librte_mempool_stack.so -d= librte_mempool_bucket.so -d librte_kni.so --log-level lib.kni:debug --log-= level lib.eal:debug --log-level lib.ethdev:debug --trace=3Dkni --trace-dir= =3D/tmp/ Secondly, I used followed functions. ``code used_mpool =3D rte_mempool_in_use_count(rdpdk_cfg->mbuf_pool); count_mpool =3D rte_mempool_avail_count(rdpdk_cfg->mbuf_pool); `` After calling function rte_kni_rx_burst, 32 unit is allocated. Then i force= to free message_buf (mbuf). It frees 1 unit. 31 units left in memory! How to fix or understand this issue. Follow logs, 1. (59383) 6:55:10 lrtc():3212> [KNI]Picked up 1 packets from port 0= [KNI:F000] --> 1 packet is received from Kernel that is allocate 32 unit 2. (59383) 6:55:10 print_mempool_tx():2511> [UseCount_mpool:468][avai= l_mpool:9931] 3. (59383) 6:55:10 pkni():2536> [KNI] i:0/1 4. (59383) 6:55:10 pkni():2616> [KNI][EGR] P:[IPv6] P:[0] [fe80::f= 816:3eff:fe93:f5fd]->[ff02::2] --> Packet is a broadcast packet IPv6 5. (59383) 6:55:10 pkni():2620> [KNI][EGR][pkt-len:70] 6. (59383) 6:55:10 print_mempool_tx():2511> [UseCount_mpool:467][avai= l_mpool:9932] --> mbuf is freed to understand mem-leak. =DDt is same happen= s after calling rte_eth_tx_burst 7. (59383) 6:55:10 lrtc():3212> [KNI]Picked up 1 packets from port 1= [KNI:F000] --> 1 packet is received from Kernel that is allocate 32 unit 9= 932 to 9900 then same process happens and 31 units is not freed. 8. (59383) 6:55:10 print_mempool_tx():2511> [UseCount_mpool:499][avai= l_mpool:9900] 9. (59383) 6:55:10 pkni():2536> [KNI] i:0/1 10. (59383) 6:55:10 pkni():2616> [KNI][EGR] P:[IPv6] P:[1] [fe80:= :f816:3eff:fed2:9101]->[ff02::2] 11. (59383) 6:55:10 pkni():2620> [KNI][EGR][pkt-len:70] 12. (59383) 6:55:10 print_mempool_tx():2511> [UseCount_mpool:498][avai= l_mpool:9901] Kernel : 5.4.0-146-generic #163-Ubuntu SMP Fri Mar 17 18:26:02 UTC 2023 x86= _64 x86_64 x86_64 GNU/Linux Ubuntu 20.04 DPDK dpdk-stable-22.11.1 =DDgb_uio is used. Best regards. ___ Yasin CANER Lider M=FChendis Ulak Haberle=FEme A.=DE. Ankara Bu elektronik posta ve onunla iletilen b=FCt=FCn dosyalar sadece g=F6nderic= isi taraf=FDndan almas=FD ama=E7lanan yetkili, ger=E7ek ya da t=FCzel ki=FE= inin kullan=FDm=FD i=E7indir. E=F0er s=F6z konusu yetkili al=FDc=FD de=F0il= seniz, bu elektronik postan=FDn i=E7eri=F0ini a=E7=FDklaman=FDz, kopyalaman= =FDz, y=F6nlendirmeniz ve kullanman=FDz kesinlikle yasakt=FDr ve bu elektro= nik postay=FD derhal silmeniz gerekmektedir. =DEirketimiz bu mesaj=FDn i=E7= erdi=F0i bilgilerin do=F0rulu=F0u veya eksiksiz oldu=F0u konusunda herhangi= bir garanti vermemektedir. Bu nedenle, bu bilgilerin ne =FEekilde olursa o= lsun i=E7eri=F0inden, iletilmesinden, al=FDnmas=FDndan ve saklanmas=FDndan = sorumlu de=F0ildir. Bu mesajdaki g=F6r=FC=FEler yaln=FDzca g=F6nderen ki=FE= iye aittir ve =DEirketimizin g=F6r=FC=FElerini yans=FDtmayabilir. Taraf=FDn= =FDz ile payla=FE=FDlan ki=FEisel verilerin, 6698 say=FDl=FD Ki=FEisel Veri= lerin Korunmas=FD Kanununa uygun olarak i=FElenmesi gere=F0ini bilginize su= nar=FDz. ________________________________ This e-mail and all files sent with it are intended for authorized natural = or legal persons, who should be the only persons to open and read them. If = you are not an authorized recipient, you are strictly prohibited from discl= osing, copying, forwarding, and using the contents of this e-mail, and you = must immediately delete it. Our company does not guarantee the accuracy or = thoroughness of the information contained in this message. 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Hello all,

 

I think there is a memory leak for KNI. <= /p>

 

Firstly, try to active trace mod=FCle to follow memo= ry management but could not. =DDt doesn’t create file and dont have a= ny clue.

 

Run Command : -c dpdk_core_mask -d librte_net_virtio= .so -d librte_mbuf.so -d librte_mempool.so -d librte_mempool_ring.so -d lib= rte_mempool_stack.so -d librte_mempool_bucket.so -d librte_kni.so --log-lev= el lib.kni:debug --log-level lib.eal:debug --log-level lib.ethdev:debug --trace=3Dkni --trace-dir=3D/tmp/<= /p>

 

 

Secondly, I used followed functions.

 

``code

  used_mpool &nb= sp;=3D rte_mempool_in_use_c= ount(rdpdk_cfg->mbuf_pool);

  count_mpool = =3D rte_mempool_avail_count= (rdpdk_cfg->mbuf_pool);

``

 

After calling function rte_kni_rx_burst, 32 unit is = allocated. Then i force to free message_buf (mbuf). It frees 1 unit. 31 uni= ts left in memory!

 

 

How to fix or understand this issue.

Follow logs,

 

 

 

  1. (59383)  6:55:10    lrtc():3212> [KNI]Picked up 1 pa= ckets from port 0 [KNI:F000]   =E0 1 packet is received from = Kernel that is allocate 32 unit
  2. (59383)  6:55:10   print_mempool_tx():2511> [UseCount_mpo= ol:468][avail_mpool:9931]
  3. (59383)  6:55:10    pkni():2536> [KNI] i:0/1
  4. (59383)  6:55:10    pkni():2616> [KNI][EGR]  P:= [IPv6]  P:[0] [fe80::f816:3eff:fe93:f5fd]->[ff02::2] =E0 Packet is a broadcast pack= et IPv6
  5. (59383)  6:55:10    pkni():2620> [KNI][EGR][pkt-len:= 70]
  6. (59383)  6:55:10   print_mempool_tx():2511> [UseCount_mpo= ol:467][avail_mpool:9932] =E0 mbuf is freed to understan= d mem-leak. =DDt is same happens after calling rte_eth_tx_burst<= /li>
  7. (59383)  6:55:10    lrtc():3212> [KNI]Picked up 1 pa= ckets from port 1 [KNI:F000] =E0 1 packet is received from Kernel that is allocate 32 unit 9932 t= o 9900 then same process happens and 31 units is not freed.
    8. =
  8. (59383)  6:55:10   print_mempool_tx():2511> [UseCount_mpo= ol:499][avail_mpool:9900]
  9. (59383)  6:55:10    pkni():2536> [KNI] i:0/1
  10. (59383)  6:55:10    pkni():2616> [KNI][EGR]  P:= [IPv6]    P:[1] [fe80::f816:3eff:fed2:9101]->[ff02::2]
  11. (59383)  6:55:10    pkni():2620> [KNI][EGR][pkt-len:= 70]
  12. (59383)  6:55:10   print_mempool_tx():2511> [UseCount_mpo= ol:498][avail_mpool:9901]

 

 

Kernel : 5.4.0-146-generic #163-Ubuntu SMP Fri Mar 1= 7 18:26:02 UTC 2023 x86_64 x86_64 x86_64 GNU/Linux

Ubuntu 20.04

DPDK dpdk-stable-22.11.1

=DDgb_uio is used.

 

Best regards.

___

Yasin CANER

Lider M=FChendis

Ulak Haberle=FEme A.=DE. Ankara

 

Bu elektronik posta ve onunla iletilen b=FCt=FCn dosyalar sadece g=F6nde= ricisi taraf=FDndan almas=FD ama=E7lanan yetkili, ger=E7ek ya da t=FCzel ki= =FEinin kullan=FDm=FD i=E7indir. E=F0er s=F6z konusu yetkili al=FDc=FD de= =F0ilseniz, bu elektronik postan=FDn i=E7eri=F0ini a=E7=FDklaman=FDz, kopya= laman=FDz, y=F6nlendirmeniz ve kullanman=FDz kesinlikle yasakt=FDr ve bu elektronik p= ostay=FD derhal silmeniz gerekmektedir. =DEirketimiz bu mesaj=FDn i=E7erdi= =F0i bilgilerin do=F0rulu=F0u veya eksiksiz oldu=F0u konusunda herhangi bir= garanti vermemektedir. Bu nedenle, bu bilgilerin ne =FEekilde olursa olsun i=E7eri=F0inden, iletilmesinden, al=FDnmas=FDndan ve saklanma= s=FDndan sorumlu de=F0ildir. Bu mesajdaki g=F6r=FC=FEler yaln=FDzca g=F6nde= ren ki=FEiye aittir ve =DEirketimizin g=F6r=FC=FElerini yans=FDtmayabilir. = Taraf=FDn=FDz ile payla=FE=FDlan ki=FEisel verilerin, 6698 say=FDl=FD Ki=FE= isel Verilerin Korunmas=FD Kanununa uygun olarak i=FElenmesi gere=F0ini bilginize sunar= =FDz.

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