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Property:do dettmer write (procfs)
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Name-Collision - multiple objects in this wiki use the name do_dettmer_write!
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Procfs-Object
| Procfs-Object: | do_dettmer_write (procfs) - type File | Wiki | Freetz | IPPF | whmf | AVM | Web |
| Location: | System >> Proc-Filesystem - Origin: Lantiq | ||||||
| Path: | /proc/avm, /proc/avm/benchmark | ||||||
| Properties: | Firmware: 5.04 - 7.51 - Kernel (perm): 2.6.28.10 (r), 2.6.32.21 (r), 2.6.32.60 (r), 2.6.32.61 (r), 3.10.107 (r), 3.10.73 (r) | ||||||
| Function: | Test: MemBench Lantiq Write Benchmark (MIPS). | ||||||
Goto: Examples - Dependencies - Model-Matrix - Help Supportdata2 - SMW-Browser
Details
do_dettmer_write is an open source RAM Benchmark by AVM which performs a Linear Write test (cached).
Initially located at /proc/avm it was moved to /proc/avm/benchmark later. See the Path in the Model-Matrix.
This test is only available on MIPS CPUs and uses MIPS cached memory address space.
Unlike other tests it does not print the results but sends them to the kernel ring buffer, which could be read by dmesg.
The name of this procfs file comes from the surname of Knut Dettmer, a Lantiq employee.
do_dettmer_write is part of the MemBench suite. For an overview of all tests see help (procfs) and the Benchmark article.
Excerpt from the source code avm_membench.c (german):
/*------------------------------------------------------------------------------------------*\ * Mem-Test von Knut Dettmer (Lantiq-Mitarbeiter) * * KD: simple memory thruput test (MIPS cached memory address space). \*------------------------------------------------------------------------------------------*/
Examples
7490 fw 7.29 example:
fritz3:/var/mod/root $ cat /proc/avm/do_dettmer_write Lantiq Write Benchmark. (Set LogLevel 0 to see the results..) fritz3:/var/mod/root $ dmesg | tail -n 10 [1236092.820000] Starting ddr [1236092.820000] write [1236092.820000] stress test for [1236092.820000] 196.6 MHz [1236092.820000] ddr clock frequency [1236092.820000] 512MB will be [1236092.820000] written [1236093.110000] 512MB written [1236093.110000] in 361 mseconds [1236093.110000] ==>> 1452MB/s thruput
7390 fw 6.04 example:
root@7390:/var/mod/root# cat /proc/avm/do_dettmer_write Lantiq Write Benchmark. (Set LogLevel 0 to see the results..) root@7390:/var/mod/root# dmesg | tail -n 5 Starting ddr <0>write <0>stress test for <0>196.6 MHz <0>ddr clock frequency 512MB will be <0>written 512MB written in 356 mseconds ==>> 1472MB/s thruput
7240 fw 6.06 example:
root@fritz:/var/mod/root# echo AVM_PRINTK > /dev/debug root@fritz:/var/mod/root# cat /proc/avm/do_dettmer_write Lantiq Read Benchmark. (Set LogLevel 0 to see the results..) root@fritz:/var/mod/root# echo AVMDBG_EOF 1+ >/dev/debug root@fritz:/var/mod/root# tail /dev/debug 2>/dev/null Starting ddr write stress test for 196.6 MHz ddr clock frequency 512MB will be written 512MB written in 1592 mseconds ==>> 329MB/s thruput root@fritz:/var/mod/root# echo AVMDBG_EOF 0 >/dev/debug
Dependencies
Daily updated index of all dependencies of this object. Last update: GMT.
A ** in the Mod column marks info from Supportdata2 probes, which will always stay incomplete.
A - in the Mod column marks manual research, the Firmware then shows where the Object occurs, not the Relation.
| Relation | Typ | Object | Mod | Firmware | Info | Origin |
|---|---|---|---|---|---|---|
| 0 dependencies for this object | ||||||
Model-Matrix
Daily updated index of the presence, path and size of this object for each model. Last update: 2024-12-23 05:10 GMT.
Showing all models using this object. Click any column header (click-wait-click) to sort the list by the respective data.
The (main/scrpn/boot/arm/prx/atom/rtl) label in the Model column shows which CPU is meant for Multi-Linux models.
Note that this list comes from Supportdata2 probes, which can have arbitrary settings and come from different firmware versions.
It doesn't say much if a model is not listed here. It may be a missing supportdata2 file or just a disabled feature.
| Model | Firmware | Path | Kernel (perm) |
|---|---|---|---|
| FRITZ!Box 3490 | 7.30 | /proc/avm | 3.10.107 (r) |
| FRITZ!Box 5490 | 7.29 | /proc/avm | 3.10.107 (r) |
| FRITZ!Box Fon WLAN 7240 | 6.06 | /proc/avm | 2.6.32.60 (r) |
| FRITZ!Box 7272 | 6.88 | /proc/avm/benchmark | 2.6.32.61 (r) |
| FRITZ!Box Fon WLAN 7320 | 6.55 | /proc/avm/benchmark | 2.6.32.61 (r) |
| FRITZ!Box 7362 SL | 7.12 | /proc/avm | 3.10.107 (r) |
| FRITZ!Box Fon WLAN 7390 | 6.04 | /proc/avm | 2.6.28.10 (r) |
| FRITZ!Box 7412 | 6.87 | /proc/avm | 3.10.73 (r) |
| FRITZ!Box 7430 | 7.29 | /proc/avm | 3.10.107 (r) |
| FRITZ!Box 7490 | 7.29 - 7.51 | /proc/avm | 3.10.107 (r) |
| Speedport W 504V MK | 5.04 | /proc/avm | 2.6.32.21 (r) |
| 11 models use this object | |||
Help Supportdata2
The data in this article is incomplete since it was manually collected using the Supportdata2 project.
Unlike the Supportdata-Probes which have been collected for years Supportdata2 is brand new and only has a few probes.
If you have access to a shell then please help to extend the Supportdata2 collection to improve this data.
It's easy and it's done in minutes. Please send created data as an Email attachment to the address listed here. Thanks!
