TDA4VM-Q1: [CPSW9G] Switch packet loss and optimization

zs xu

Prodigy 250 points

Part Number: TDA4VM-Q1

Tool/software:

Using SDK 8.6, ALE log has been opened.

There has been a packet loss issue, may I ask what the meaning of these counts is?

portMaskDrop

rxTopOfFifoDrop

aleVidIngressDrop

txPriDrop[0]

What caused these increased counts?

How to solve these packet loss problems?

Does CPSW9G have room for performance optimization?

If the enabled CPSW9G port does not have external devices, will this affect the performance of the switch?

[MCU2_0]  Port 0 Statistics

[MCU2_0]   1569.030202 s: -----------------------------------------

[MCU2_0]   1569.030241 s:   rxGoodFrames            = 844939

[MCU2_0]   1569.030282 s:   rxBcastFrames           = 1

[MCU2_0]   1569.030318 s:   rxMcastFrames           = 567

[MCU2_0]   1569.030357 s:   aleDrop                 = 1

[MCU2_0]   1569.030392 s:   rxOctets                = 897969199

[MCU2_0]   1569.030430 s:   txGoodFrames            = 768873

[MCU2_0]   1569.030464 s:   txMcastFrames           = 349962

[MCU2_0]   1569.030499 s:   txOctets                = 649091871

[MCU2_0]   1569.030534 s:   octetsFrames64          = 59202

[MCU2_0]   1569.030567 s:   octetsFrames65to127     = 186323

[MCU2_0]   1569.030601 s:   octetsFrames128to255    = 97210

[MCU2_0]   1569.030635 s:   octetsFrames256to511    = 94943

[MCU2_0]   1569.030669 s:   octetsFrames512to1023   = 257917

[MCU2_0]   1569.030702 s:   octetsFrames1024        = 918217

[MCU2_0]   1569.030736 s:   netOctets               = 1547061070

[MCU2_0]   1569.030773 s:   portMaskDrop            = 1

[MCU2_0]   1569.030808 s:   alePolicyMatch          = 448310

[MCU2_0]   1569.030847 s:   txPri[0]                = 768873

[MCU2_0]   1569.031017 s:   txPriBcnt[0]            = 649091871

[MCU2_0]   1569.031158 s: 

[MCU2_0]  External Port 1 Statistics

[MCU2_0]   1569.031204 s: -----------------------------------------

[MCU2_0]   1569.031236 s:   rxGoodFrames            = 53049

[MCU2_0]   1569.031275 s:   rxBcastFrames           = 34

[MCU2_0]   1569.031310 s:   rxMcastFrames           = 166

[MCU2_0]   1569.031346 s:   aleDrop                 = 34

[MCU2_0]   1569.031382 s:   rxOctets                = 3468150

[MCU2_0]   1569.031418 s:   txGoodFrames            = 1221450

[MCU2_0]   1569.031453 s:   txMcastFrames           = 316380

[MCU2_0]   1569.031490 s:   txOctets                = 829402202

[MCU2_0]   1569.031527 s:   octetsFrames64          = 88544

[MCU2_0]   1569.031561 s:   octetsFrames65to127     = 143774

[MCU2_0]   1569.031595 s:   octetsFrames128to255    = 6274

[MCU2_0]   1569.031631 s:   octetsFrames256to511    = 522277

[MCU2_0]   1569.031665 s:   octetsFrames512to1023   = 183544

[MCU2_0]   1569.031703 s:   octetsFrames1024        = 330086

[MCU2_0]   1569.031736 s:   netOctets               = 832870352

[MCU2_0]   1569.031771 s:   portMaskDrop            = 34

[MCU2_0]   1569.031805 s:   aleUnknownUcast         = 10

[MCU2_0]   1569.031839 s:   aleUnknownUcastBcnt     = 1034

[MCU2_0]   1569.031983 s:   aleUnknownMcast         = 7

[MCU2_0]   1569.032041 s:   aleUnknownMcastBcnt     = 1061

[MCU2_0]   1569.032080 s:   alePolicyMatch          = 53049

[MCU2_0]   1569.032122 s:   txPri[0]                = 1221450

[MCU2_0]   1569.032164 s:   txPriBcnt[0]            = 829402202

[MCU2_0]   1569.032211 s:   txPriDrop[0]            = 2

[MCU2_0]   1569.032250 s:   txPriDropBcnt[0]        = 128

[MCU2_0]   1569.032372 s: 

[MCU2_0]  External Port 3 Statistics

[MCU2_0]   1569.032414 s: -----------------------------------------

[MCU2_0]   1569.032448 s:   rxGoodFrames            = 43455

[MCU2_0]   1569.032483 s:   rxBcastFrames           = 3

[MCU2_0]   1569.032516 s:   rxMcastFrames           = 3119

[MCU2_0]   1569.032551 s:   aleDrop                 = 3

[MCU2_0]   1569.032625 s:   rxOctets                = 33995347

[MCU2_0]   1569.032669 s:   txGoodFrames            = 963090

[MCU2_0]   1569.032704 s:   txMcastFrames           = 347388

[MCU2_0]   1569.032769 s:   txOctets                = 802780646

[MCU2_0]   1569.032809 s:   octetsFrames64          = 14770

[MCU2_0]   1569.032844 s:   octetsFrames65to127     = 255664

[MCU2_0]   1569.033012 s:   octetsFrames128to255    = 19148

[MCU2_0]   1569.033065 s:   octetsFrames256to511    = 87996

[MCU2_0]   1569.033100 s:   octetsFrames512to1023   = 219031

[MCU2_0]   1569.033136 s:   octetsFrames1024        = 409936

[MCU2_0]   1569.033170 s:   netOctets               = 836775993

[MCU2_0]   1569.033206 s:   portMaskDrop            = 3

[MCU2_0]   1569.033238 s:   rxTopOfFifoDrop         = 1

[MCU2_0]   1569.033271 s:   aleUnknownUcast         = 259

[MCU2_0]   1569.033303 s:   aleUnknownUcastBcnt     = 31818

[MCU2_0]   1569.033336 s:   aleUnknownMcast         = 1365

[MCU2_0]   1569.033370 s:   aleUnknownMcastBcnt     = 241058

[MCU2_0]   1569.033404 s:   aleUnknownBcast         = 1

[MCU2_0]   1569.033435 s:   aleUnknownBcastBcnt     = 87

[MCU2_0]   1569.033468 s:   alePolicyMatch          = 43452

[MCU2_0]   1569.033504 s:   txPri[0]                = 963090

[MCU2_0]   1569.033544 s:   txPriBcnt[0]            = 802780646

[MCU2_0]   1569.033586 s:   txPriDrop[0]            = 1

[MCU2_0]   1569.033625 s:   txPriDropBcnt[0]        = 304

[MCU2_0]   1569.033753 s: 

[MCU2_0]  External Port 5 Statistics

[MCU2_0]   1569.033796 s: -----------------------------------------

[MCU2_0]   1569.033830 s:   rxGoodFrames            = 1393483

[MCU2_0]   1569.034037 s:   rxMcastFrames           = 346166

[MCU2_0]   1569.034103 s:   aleDrop                 = 74

[MCU2_0]   1569.034142 s:   rxOctets                = 791076175

[MCU2_0]   1569.034181 s:   txGoodFrames            = 982275

[MCU2_0]   1569.034217 s:   txMcastFrames           = 4403

[MCU2_0]   1569.034254 s:   txOctets                = 895465116

[MCU2_0]   1569.034290 s:   octetsFrames64          = 124349

[MCU2_0]   1569.034322 s:   octetsFrames65to127     = 396646

[MCU2_0]   1569.034354 s:   octetsFrames128to255    = 102295

[MCU2_0]   1569.034387 s:   octetsFrames256to511    = 595444

[MCU2_0]   1569.034420 s:   octetsFrames512to1023   = 272554

[MCU2_0]   1569.034453 s:   octetsFrames1024        = 884470

[MCU2_0]   1569.034487 s:   netOctets               = 1686541291

[MCU2_0]   1569.034522 s:   portMaskDrop            = 74

[MCU2_0]   1569.034554 s:   rxTopOfFifoDrop         = 3

[MCU2_0]   1569.034587 s:   aleVidIngressDrop       = 68

[MCU2_0]   1569.034621 s:   aleUnknownUcast         = 2

[MCU2_0]   1569.034652 s:   aleUnknownUcastBcnt     = 2188

[MCU2_0]   1569.034683 s:   aleUnknownMcast         = 4

[MCU2_0]   1569.034714 s:   aleUnknownMcastBcnt     = 2554

[MCU2_0]   1569.034746 s:   alePolicyMatch          = 1393409

[MCU2_0]   1569.034780 s:   txPri[0]                = 982275

[MCU2_0]   1569.035070 s:   txPriBcnt[0]            = 895465116

[MCU2_0]   1569.037197 s:   txPriDrop[0]            = 1

[MCU2_0]   1569.037603 s:   txPriDropBcnt[0]        = 1063

over 1 year ago

0 Semon Zhang over 1 year ago

TI__Expert 8771 points

the meaning of the statistics can refer to TRM, if the received frame is errored frame, this frame will be dropped, and the error count will increase

Regards

Semon

0 zs xu over 1 year ago in reply to Semon Zhang

Prodigy 250 points

"rxTopOfFifoDrop" Does the increase in the count indicate that CPSW9G's Rx buffer overflowed, causing CPSW9G to drop the received packets?

"txPriDrop[0]" Does the increase in the count indicate that the Tx buffer of CPSW9G overflowed, causing CPSW9G to drop the sent data without actually sending the packet?

0 Semon Zhang over 1 year ago in reply to zs xu

TI__Expert 8771 points

"rxTopOfFifoDrop" Does the increase in the count indicate that CPSW9G's Rx buffer overflowed, causing CPSW9G to drop the received packets?

"txPriDrop[0]" Does the increase in the count indicate that the Tx buffer of CPSW9G overflowed, causing CPSW9G to drop the sent data without actually sending the packet?

-----------------------------

HI ZS

yes, when RX FIFO is full, the packet in the top of the FIFo will be dropped, this maybe caused by that the remote station send too fast, or the CPU is too busy to handle the received packet

any issue about this case?

Regards

Semon

0 zs xu over 1 year ago in reply to Semon Zhang

Prodigy 250 points

Can I monitor CPSW packet loss status on A72?

0 Semon Zhang 11 months ago in reply to zs xu

TI__Expert 8771 points

zs xu said:
Can I monitor CPSW packet loss status on A72?

the port packet stats register can be read from either CPU CORE

Regards

Semon

Processors

Processors forum

TDA4VM-Q1: [CPSW9G] Switch packet loss and optimization