Alex Tiedemann
Occasional Visitor
Hi,
Have an Asus AC68U router from 2014 running Asuswrt-Merlin verion 380.69_0 (just upgraded from verion 380.68_4, where i also have the problem below).
The last couple of days the WiFi, both 2.5 GHz and 5 GHz, have been failing, it becomes unresponsive and either disconnect clients, or leave clients connected and then disconnects clients, when clients are using the connection.
The connection speed drops before clients are disconnected. (See Screendump 01).
The problem first showed up running Asuswrt-Merlin version 380.68_4, tried many different WiFi setting to see weather or not it made any difference, but didn't manage to find a way to solve the problem.
Updated the firmware to Asuswrt-Merlin verion 380.69_0 but still have the problem.
When restarting the router, things are running fine, for some time, then at one point the WiFi fails.
No problem when having devices connected via cable, everything works fine, just not the WiFi.
The WiFi problem is with iPhones, Android devices, Dell and HP laptops, so all our wireless devices.
See settings for WiFi in screendumps 04, 05, 06 and 07.
Have two Guest-WiFi's setup, one 2.4 Ghz and one 5 GHz.
I have saved log info from the router in a Syslog file, and see at one point this shows up:
** Syslog Start **
23.01.2018 17:49,Warning,192.168.1.1,node 0: slabs: 3834, objs: 30665, free: 1
23.01.2018 17:49,Warning,192.168.1.1,cache: kmalloc_dma-4096, object size: 4096, buffer size: 4096, default order: 3, min order: 0
23.01.2018 17:49,Warning,192.168.1.1,SLUB: Unable to allocate memory on node -1 (gfp=0x21)
23.01.2018 17:49,Warning,192.168.1.1,0 pages swap cached
23.01.2018 17:49,Warning,192.168.1.1,7057 pages shared
23.01.2018 17:49,Warning,192.168.1.1,6282 slab pages
23.01.2018 17:49,Warning,192.168.1.1,1609 reserved pages
23.01.2018 17:49,Warning,192.168.1.1,22238 free pages
23.01.2018 17:49,Warning,192.168.1.1,65536 pages of RAM
23.01.2018 17:49,Warning,192.168.1.1,Total swap = 0kB
23.01.2018 17:49,Warning,192.168.1.1,Free swap = 0kB
23.01.2018 17:49,Warning,192.168.1.1,Swap cache stats: add 0, delete 0, find 0/0
23.01.2018 17:49,Warning,192.168.1.1,0 pages in swap cache
23.01.2018 17:49,Warning,192.168.1.1,2065 total pagecache pages
23.01.2018 17:49,Warning,192.168.1.1,Normal: 62*4kB 212*8kB 311*16kB 160*32kB 64*64kB 27*128kB 2*256kB 0*512kB 2*1024kB 2*2048kB 14*4096kB = 83592kB
23.01.2018 17:49,Warning,192.168.1.1,DMA: 0*4kB 2*8kB 1*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 1*4096kB = 4128kB
23.01.2018 17:49,Warning,192.168.1.1,lowmem_reserve[]: 0 0 0
23.01.2018 17:49,Warning,192.168.1.1,Normal free:83592kB min:9456kB low:11820kB high:14184kB active_anon:5376kB inactive_anon:5908kB active_file:2920kB inactive_file:4528kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:111616kB mlocked:0kB dirty:0kB writeback:0kB mapped:4816kB shmem:812kB slab_reclaimable:644kB slab_unreclaimable:11140kB kernel_stack:560kB pagetables:676kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no
23.01.2018 17:49,Warning,192.168.1.1,lowmem_reserve[]: 0 109 109
23.01.2018 17:49,Warning,192.168.1.1,DMA free:4128kB min:11020kB low:13772kB high:16528kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:130048kB mlocked:0kB dirty:0kB writeback:0kB mapped:0kB shmem:0kB slab_reclaimable:0kB slab_unreclaimable:122744kB kernel_stack:0kB pagetables:0kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? yes
23.01.2018 17:49,Warning,192.168.1.1,mapped:1204 shmem:203 pagetables:169 bounce:0
23.01.2018 17:49,Warning,192.168.1.1,free:21930 slab_reclaimable:161 slab_unreclaimable:33471
23.01.2018 17:49,Warning,192.168.1.1,unevictable:0 dirty:0 writeback:0 unstable:0
23.01.2018 17:49,Warning,192.168.1.1,active_file:730 inactive_file:1132 isolated_file:0
23.01.2018 17:49,Warning,192.168.1.1,active_anon:1344 inactive_anon:1477 isolated_anon:0
23.01.2018 17:49,Warning,192.168.1.1,CPU 1: hi: 42, btch: 7 usd: 38
23.01.2018 17:49,Warning,192.168.1.1,CPU 0: hi: 42, btch: 7 usd: 29
23.01.2018 17:49,Warning,192.168.1.1,Normal per-cpu:
23.01.2018 17:49,Warning,192.168.1.1,CPU 1: hi: 42, btch: 7 usd: 39
23.01.2018 17:49,Warning,192.168.1.1,CPU 0: hi: 42, btch: 7 usd: 6
23.01.2018 17:49,Warning,192.168.1.1,DMA per-cpu:
23.01.2018 17:49,Warning,192.168.1.1,Mem-info:
23.01.2018 17:49,Warning,192.168.1.1,unwind: Index not found bf015e48
23.01.2018 17:49,Warning,192.168.1.1,[<c038876c>] (_dma_rxfill+0x174/0x3d4) from [<bf015e48>] (chiprx+0xf0/0x140 [et])
23.01.2018 17:49,Warning,192.168.1.1,[<c03891f0>] (osl_pktget+0x4c/0x154) from [<c038876c>] (_dma_rxfill+0x174/0x3d4)
23.01.2018 17:49,Warning,192.168.1.1,[<c01d8ea4>] (osl_alloc_skb+0x18/0x30) from [<c03891f0>] (osl_pktget+0x4c/0x154)
23.01.2018 17:49,Warning,192.168.1.1,[<c0379f88>] (__alloc_skb+0x54/0x104) from [<c01d8ea4>] (osl_alloc_skb+0x18/0x30)
23.01.2018 17:49,Warning,192.168.1.1,[<c0377998>] (__kmalloc_track_caller+0xf8/0x108) from [<c0379f88>] (__alloc_skb+0x54/0x104)
23.01.2018 17:49,Warning,192.168.1.1,[<c0377764>] (__slab_alloc+0x794/0x814) from [<c0377998>] (__kmalloc_track_caller+0xf8/0x108)
23.01.2018 17:49,Warning,192.168.1.1,[<c009e84c>] (__alloc_pages_nodemask+0x61c/0x698) from [<c0377764>] (__slab_alloc+0x794/0x814)
23.01.2018 17:49,Warning,192.168.1.1,[<c0043ff8>] (unwind_backtrace+0x0/0xf8) from [<c009e84c>] (__alloc_pages_nodemask+0x61c/0x698)
23.01.2018 17:49,Warning,192.168.1.1,swapper: page allocation failure. order:0, mode:0x4021
** Syslog End **
Have made some screendumps when logged into the router that shows the amout of RAM used, screendump 08 and 09.
At one point i got a strange message when logging into the router, screendump 10, not the normal message when logging in, screendump 11.
Have uploaded two log files, one short and one long.
http://kiwi.as/AC68U/
Any ideas?
Have an Asus AC68U router from 2014 running Asuswrt-Merlin verion 380.69_0 (just upgraded from verion 380.68_4, where i also have the problem below).
The last couple of days the WiFi, both 2.5 GHz and 5 GHz, have been failing, it becomes unresponsive and either disconnect clients, or leave clients connected and then disconnects clients, when clients are using the connection.
The connection speed drops before clients are disconnected. (See Screendump 01).
The problem first showed up running Asuswrt-Merlin version 380.68_4, tried many different WiFi setting to see weather or not it made any difference, but didn't manage to find a way to solve the problem.
Updated the firmware to Asuswrt-Merlin verion 380.69_0 but still have the problem.
When restarting the router, things are running fine, for some time, then at one point the WiFi fails.
No problem when having devices connected via cable, everything works fine, just not the WiFi.
The WiFi problem is with iPhones, Android devices, Dell and HP laptops, so all our wireless devices.
See settings for WiFi in screendumps 04, 05, 06 and 07.
Have two Guest-WiFi's setup, one 2.4 Ghz and one 5 GHz.
I have saved log info from the router in a Syslog file, and see at one point this shows up:
** Syslog Start **
23.01.2018 17:49,Warning,192.168.1.1,node 0: slabs: 3834, objs: 30665, free: 1
23.01.2018 17:49,Warning,192.168.1.1,cache: kmalloc_dma-4096, object size: 4096, buffer size: 4096, default order: 3, min order: 0
23.01.2018 17:49,Warning,192.168.1.1,SLUB: Unable to allocate memory on node -1 (gfp=0x21)
23.01.2018 17:49,Warning,192.168.1.1,0 pages swap cached
23.01.2018 17:49,Warning,192.168.1.1,7057 pages shared
23.01.2018 17:49,Warning,192.168.1.1,6282 slab pages
23.01.2018 17:49,Warning,192.168.1.1,1609 reserved pages
23.01.2018 17:49,Warning,192.168.1.1,22238 free pages
23.01.2018 17:49,Warning,192.168.1.1,65536 pages of RAM
23.01.2018 17:49,Warning,192.168.1.1,Total swap = 0kB
23.01.2018 17:49,Warning,192.168.1.1,Free swap = 0kB
23.01.2018 17:49,Warning,192.168.1.1,Swap cache stats: add 0, delete 0, find 0/0
23.01.2018 17:49,Warning,192.168.1.1,0 pages in swap cache
23.01.2018 17:49,Warning,192.168.1.1,2065 total pagecache pages
23.01.2018 17:49,Warning,192.168.1.1,Normal: 62*4kB 212*8kB 311*16kB 160*32kB 64*64kB 27*128kB 2*256kB 0*512kB 2*1024kB 2*2048kB 14*4096kB = 83592kB
23.01.2018 17:49,Warning,192.168.1.1,DMA: 0*4kB 2*8kB 1*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 1*4096kB = 4128kB
23.01.2018 17:49,Warning,192.168.1.1,lowmem_reserve[]: 0 0 0
23.01.2018 17:49,Warning,192.168.1.1,Normal free:83592kB min:9456kB low:11820kB high:14184kB active_anon:5376kB inactive_anon:5908kB active_file:2920kB inactive_file:4528kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:111616kB mlocked:0kB dirty:0kB writeback:0kB mapped:4816kB shmem:812kB slab_reclaimable:644kB slab_unreclaimable:11140kB kernel_stack:560kB pagetables:676kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no
23.01.2018 17:49,Warning,192.168.1.1,lowmem_reserve[]: 0 109 109
23.01.2018 17:49,Warning,192.168.1.1,DMA free:4128kB min:11020kB low:13772kB high:16528kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:130048kB mlocked:0kB dirty:0kB writeback:0kB mapped:0kB shmem:0kB slab_reclaimable:0kB slab_unreclaimable:122744kB kernel_stack:0kB pagetables:0kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? yes
23.01.2018 17:49,Warning,192.168.1.1,mapped:1204 shmem:203 pagetables:169 bounce:0
23.01.2018 17:49,Warning,192.168.1.1,free:21930 slab_reclaimable:161 slab_unreclaimable:33471
23.01.2018 17:49,Warning,192.168.1.1,unevictable:0 dirty:0 writeback:0 unstable:0
23.01.2018 17:49,Warning,192.168.1.1,active_file:730 inactive_file:1132 isolated_file:0
23.01.2018 17:49,Warning,192.168.1.1,active_anon:1344 inactive_anon:1477 isolated_anon:0
23.01.2018 17:49,Warning,192.168.1.1,CPU 1: hi: 42, btch: 7 usd: 38
23.01.2018 17:49,Warning,192.168.1.1,CPU 0: hi: 42, btch: 7 usd: 29
23.01.2018 17:49,Warning,192.168.1.1,Normal per-cpu:
23.01.2018 17:49,Warning,192.168.1.1,CPU 1: hi: 42, btch: 7 usd: 39
23.01.2018 17:49,Warning,192.168.1.1,CPU 0: hi: 42, btch: 7 usd: 6
23.01.2018 17:49,Warning,192.168.1.1,DMA per-cpu:
23.01.2018 17:49,Warning,192.168.1.1,Mem-info:
23.01.2018 17:49,Warning,192.168.1.1,unwind: Index not found bf015e48
23.01.2018 17:49,Warning,192.168.1.1,[<c038876c>] (_dma_rxfill+0x174/0x3d4) from [<bf015e48>] (chiprx+0xf0/0x140 [et])
23.01.2018 17:49,Warning,192.168.1.1,[<c03891f0>] (osl_pktget+0x4c/0x154) from [<c038876c>] (_dma_rxfill+0x174/0x3d4)
23.01.2018 17:49,Warning,192.168.1.1,[<c01d8ea4>] (osl_alloc_skb+0x18/0x30) from [<c03891f0>] (osl_pktget+0x4c/0x154)
23.01.2018 17:49,Warning,192.168.1.1,[<c0379f88>] (__alloc_skb+0x54/0x104) from [<c01d8ea4>] (osl_alloc_skb+0x18/0x30)
23.01.2018 17:49,Warning,192.168.1.1,[<c0377998>] (__kmalloc_track_caller+0xf8/0x108) from [<c0379f88>] (__alloc_skb+0x54/0x104)
23.01.2018 17:49,Warning,192.168.1.1,[<c0377764>] (__slab_alloc+0x794/0x814) from [<c0377998>] (__kmalloc_track_caller+0xf8/0x108)
23.01.2018 17:49,Warning,192.168.1.1,[<c009e84c>] (__alloc_pages_nodemask+0x61c/0x698) from [<c0377764>] (__slab_alloc+0x794/0x814)
23.01.2018 17:49,Warning,192.168.1.1,[<c0043ff8>] (unwind_backtrace+0x0/0xf8) from [<c009e84c>] (__alloc_pages_nodemask+0x61c/0x698)
23.01.2018 17:49,Warning,192.168.1.1,swapper: page allocation failure. order:0, mode:0x4021
** Syslog End **
Have made some screendumps when logged into the router that shows the amout of RAM used, screendump 08 and 09.
At one point i got a strange message when logging into the router, screendump 10, not the normal message when logging in, screendump 11.
Have uploaded two log files, one short and one long.
http://kiwi.as/AC68U/
Any ideas?