J-Link program speed

Hi,
My test condition is jlink-v9, and windows 10. I use pyocd to program, the speed is about 10KB/S.

$ pyocd flash -t CY8C624AFNI-S2D43 ./cypress_flash.hex  --pack E:/pyocd_pack/Cypress.PSoC6_DFP.1.2.0.pack -f 5M
0001401:INFO:load_cmd:Loading E:\WorkSpace\pyOCD\cypress_flash.hex
[---|---|---|---|---|---|---|---|---|----]
[========================================]
0219615:INFO:loader:Erased 2097152 bytes (8 sectors), programmed 2097152 bytes (4096 pages), skipped 0 bytes (0 pages) at 9.44 kB/s

then, I run the "speed_test.py", the speed is 12KB/S

$ python ./test/speed_test.py
INFO:pyocd.board.board:Target type is cy8c6xxa
INFO:pyocd.board.board:Target type is cy8c6xxa
INFO:pyocd.coresight.dap:DP IDR = 0x6ba02477 (v2 rev6)
INFO:pyocd.coresight.ap:AHB-AP#0 IDR = 0x84770001 (AHB-AP var0 rev8)
INFO:pyocd.coresight.ap:AHB-AP#1 IDR = 0x84770001 (AHB-AP var0 rev8)
INFO:pyocd.coresight.ap:AHB-AP#2 IDR = 0x24770011 (AHB-AP var1 rev2)
INFO:pyocd.coresight.rom_table:AHB-AP#0 Class 0x1 ROM table #0 @ 0xf1000000 (designer=034 part=102)
INFO:pyocd.coresight.rom_table:AHB-AP#1 Class 0x1 ROM table #0 @ 0xf0000000 (designer=034 part=102)
INFO:pyocd.coresight.rom_table:[0]<e00ff000:ROM class=1 designer=43b part=4c0>
INFO:pyocd.coresight.rom_table:  AHB-AP#1 Class 0x1 ROM table #1 @ 0xe00ff000 (designer=43b part=4c0)
INFO:pyocd.coresight.rom_table:  [0]<e000e000:SCS v6-M class=14 designer=43b part=008>
INFO:pyocd.coresight.rom_table:  [1]<e0001000:DWT v6-M class=14 designer=43b part=00a>
INFO:pyocd.coresight.rom_table:  [2]<e0002000:BPU v6-M class=14 designer=43b part=00b>
INFO:pyocd.coresight.rom_table:[1]<f0002000:CTI M0+ class=9 designer=43b part=9a6 devtype=14 archid=1a14 devid=1040800:0:0>
INFO:pyocd.coresight.rom_table:[2]<f0003000:MTB M0+ class=9 designer=43b part=932 devtype=31 archid=0a31 devid=0:0:0>
INFO:pyocd.coresight.rom_table:AHB-AP#2 Class 0x1 ROM table #0 @ 0xe00ff000 (designer=034 part=102)
INFO:pyocd.coresight.rom_table:[0]<e0080000:CTI class=9 designer=43b part=906 devtype=14 archid=0000 devid=40800:0:0>
INFO:pyocd.coresight.rom_table:[3]<e008e000:TPIU M3 class=9 designer=43b part=923 devtype=11 archid=0000 devid=ca1:0:0>
INFO:pyocd.coresight.rom_table:[4]<e007f000:ROM class=1 designer=034 part=102>
INFO:pyocd.coresight.rom_table:  AHB-AP#2 Class 0x1 ROM table #1 @ 0xe007f000 (designer=034 part=102)
INFO:pyocd.coresight.rom_table:  [0]<e000e000:SCS v7-M class=14 designer=43b part=00c>
INFO:pyocd.coresight.rom_table:  [1]<e0001000:DWT v7-M class=14 designer=43b part=002>
INFO:pyocd.coresight.rom_table:  [2]<e0002000:FPB v7-M class=14 designer=43b part=003>
INFO:pyocd.coresight.rom_table:  [3]<e0000000:ITM v7-M class=14 designer=43b part=001>
INFO:pyocd.coresight.rom_table:  [4]<e0042000:CTI class=9 designer=43b part=906 devtype=14 archid=0000 devid=40800:0:0>
INFO:pyocd.coresight.rom_table:  [5]<e0041000:ETM M4 class=9 designer=43b part=925 devtype=13 archid=0000 devid=0:0:0>
INFO:pyocd.coresight.cortex_m:CPU core #0 is Cortex-M0+ r0p1
INFO:pyocd.coresight.cortex_m:CPU core #1 is Cortex-M4 r0p1
INFO:pyocd.coresight.cortex_m:FPU present: FPv4-SP-D16-M
INFO:pyocd.coresight.dwt:2 hardware watchpoints
INFO:pyocd.coresight.fpb:4 hardware breakpoints, 0 literal comparators
INFO:pyocd.coresight.dwt:4 hardware watchpoints
INFO:pyocd.coresight.fpb:6 hardware breakpoints, 4 literal comparators


------ TEST RAM READ / WRITE SPEED [uncached 8-bit] ------
Writing 32768 byte took 2.534 seconds: 12932.860 B/s
Reading 32768 byte took 2.641 seconds: 12406.393 B/s
TEST PASSED


------ TEST ROM READ SPEED [uncached 8-bit] ------
Reading 1048576 byte took 84.726 seconds: 12376.128 B/s
TEST PASSED


------ TEST RAM READ / WRITE SPEED [uncached 32-bit] ------
Writing 32768 byte took 2.122 seconds: 15444.448 B/s
Reading 32768 byte took 2.151 seconds: 15231.991 B/s
TEST PASSED


------ TEST ROM READ SPEED [uncached 32-bit] ------
Reading 1048576 byte took 69.954 seconds: 14989.456 B/s
TEST PASSED


------ TEST RAM READ / WRITE SPEED [cached 8-bit, pass 1] ------
Writing 32768 byte took 2.106 seconds: 15562.334 B/s
Unexpected ram read elapsed time of 0!
Reading 32768 byte took 0.000 seconds: 0.000 B/s
TEST PASSED


------ TEST ROM READ SPEED [cached 8-bit, pass 1] ------
Reading 1048576 byte took 69.281 seconds: 15135.033 B/s
TEST PASSED


------ TEST RAM READ / WRITE SPEED [cached 8-bit, pass 2] ------
Writing 32768 byte took 2.110 seconds: 15529.141 B/s
Reading 32768 byte took 0.001 seconds: 32856551.153 B/s
TEST PASSED


------ TEST ROM READ SPEED [cached 8-bit, pass 2] ------
Reading 1048576 byte took 0.006 seconds: 175234939.481 B/s
TEST PASSED
INFO:pyocd.coresight.dap:DP IDR = 0x6ba02477 (v2 rev6)


------ Speed Test Performance ------
Target             RAM Read Speed   RAM Write Speed    ROM Read Speed

cy8c6xxa              12.406 KB/s       12.933 KB/s       12.376 KB/s

But, if I use openocd, the speed is 90KB/S, is that normal?

***************************************
** Silicon: 0xE455, Family: 0x102, Rev.: 0x12 (A1)
** Detected Device: CY8C624AFNI-S2D43
** Detected Main Flash size, kb: 2048
** Flash Boot version: 3.1.0.378
** SFlash version: 292144
** Chip Protection: NORMAL
***************************************
Info : psoc6.cpu.cm4: hardware has 6 breakpoints, 4 watchpoints
Info : psoc6.cpu.cm4: external reset detected
Info : Listening on port 3333 for gdb connections
Info : Listening on port 3334 for gdb connections
adapter speed: 5000 kHz
Info : SWD DPIDR 0x6ba02477
target halted due to debug-request, current mode: Thread
xPSR: 0x41000000 pc: 0x000000e0 msp: 0x080ff800
** psoc6.cpu.cm4: Ran after reset and before halt...
target halted due to debug-request, current mode: Thread
xPSR: 0x01000000 pc: 0x0000012a msp: 0x080ff800
** Programming Started **
auto erase enabled
Info : Flash write discontinued at 0x100227c8, next section at 0x10025000
Info : Padding image section 0 at 0x100227c8 with 56 bytes (bank write end alignment)
[100%] [################################] [ Erasing     ]
[100%] [################################] [ Programming ]
Info : Padding image section 1 at 0x101eb1a4 with 92 bytes (bank write end alignment)
[100%] [################################] [ Erasing     ]
[100%] [################################] [ Programming ]
wrote 1870336 bytes from file ./build/CY8CPROTO-062-4343W_B20/Debug/SmartWatch.hex in 19.714502s (92.648 KiB/s)
** Programming Finished **

** Verify Started **
verified 1870188 bytes in 3.504242s (521.184 KiB/s)
** Verified OK **
** Resetting Target **
Info : SWD DPIDR 0x6ba02477

Start with test/speed_test.py and the pyocd flash command shown in the report, then trace the programming and memory-access paths used by J-Link. Compare their measured throughput with the OpenOCD results and determine whether the discrepancy is expected or indicates a performance issue. Done means the cause and expected behavior are established, ideally with a regression check if the relevant path is identifiable.