TS-212 sporadisch extrem langsam

Hallo zusammen,

ich habe einen TS-212 sit ca. zwei Wochen, und seither erlebe ich an jedem 2. oder 3. Tag das Phänomen, dass die Datenübertragung extrem langsam ist...

Meine bisherigen Beobachtungen:

• Die Datenübertragungsrate sinkt auf ca. 500kB/m (ja, Minute, nicht Sekunde!).
• Die Adminseite ist nicht mehr erreichbar; entweder läuft der Fortschrittsbalken auf der schwarzen Seite ewig, oder ich kann mich zwar anmelden, lande aber auf einer weissen Seite ohne jeden Inhalt.
• Auch ein Reset hilft nicht, manchmal scheinen sich die Symptome nur leicht zu ändern (s.o.).
• Am folgenden Tag ist nach dem Einschalten alles wieder in Ordnung.

Die neueste Firmware 3.4.4 (0718T) habe ich drauf gemacht.

An den "guten Tagen" läuft der TS-212 prima...

Meine einfache Konfiguration:

• DSL-Router (DHCP-Server)
  
  
  • WLAN-Router
    
    
    • iMac (LAN), MacOS 10.6.8 Snow Leopard
    • TS-212 (LAN)
    • Notebook (WLAN)
    • Drucker (WLAN)

Hat einer eine Idee, woran das liegen könnte?

Gruss,

brazza

Hallo nochmals,

ich habe die Firmware V.3.5.0 eingespielt, das Phänomen tritt aber weiterhin auf. Die Adminseite ist nicht erreichbar, der Download-Manager aber schon.

Bin ich etwa der einzige, der auf dieses Problem gestossen ist?

Gruss,

brazza

Hi SL1000,

Zitat von "SL1000"

Any QPKGs installed? Sound to me like it is low on memory. Either that or you've hit the imfamous issue that the system gets sluggish when the filesystem is allmost full and there are many, many small files on it.

Double check though for hanging processes, consuming lots of cpu time. E.g. rpc.rquotad is one that sometimes gives issues.

I haven't installed any QPKGs, yet - this is something I'll only attempt when everything is working as it should. The file system can't be full since I got 2 x 2TB hdds and only 600GB of data stored there (however, I do have lots of small files). What really puzzles me is the fact that this happens only every 2 or 3 days; and now I've noticed that the admin page is actually rarely available, even when everything else is fine (i.e., I try to log on and only get the progress bar on the black page or an empty white page).

Thanks for the hanging processes hint; I'll look into that as soon as possible.

Thanks,

brazza

Hello SL1000,

here is the output of "free":

total         used         free       shared      buffers  Mem:       255636       229312        26324            0         3096 Swap:       530040        86872       443168Total:       785676       316184       469492

And here the output of "top":

Mem: 229800K used, 25836K free, 0K shrd, 3748K buff, 94780K cached
Load average: 1.41, 0.93, 0.81    (State: S=sleeping R=running, W=waiting)


  PID USER     STATUS   RSS  PPID %CPU %MEM COMMAND
 4690 admin    S        36M     1 40.8 14.4 btd
13664 admin    Z          0  2338  1.1  0.0 DS_Get_List.cgi
13654 admin    R        916 13218  0.5  0.3 top
 1064 admin    SW         0     2  0.1  0.0 kjournald
 3068 admin    S        17M     1  0.0  7.0 mt-daapd
 2607 admin    S       5784  2606  0.0  2.2 twonkymediaserv
 4337 admin    S <     2200     1  0.0  0.8 iscsid
13214 admin    S       2028  3619  0.0  0.7 sshd
 2338 admin    S       1888     1  0.0  0.7 _thttpd_
 2267 guest    S       1656     1  0.0  0.6 proftpd
 4295 admin    S       1536     1  0.0  0.6 qLogEngined
 2275 admin    S       1288     1  0.0  0.5 cupsd
13218 admin    S       1252 13214  0.0  0.4 sh
 3471 admin    S        988     1  0.0  0.3 smbd
 4305 admin    S        872     1  0.0  0.3 qShield
 3086 admin    S        844     1  0.0  0.3 nmbd
 1310 admin    S        788     1  0.0  0.3 qsmartd
 3771 admin    S        764     1  0.0  0.2 hd_util
 1891 admin    S        748     1  0.0  0.2 upnpd

The system was a little sluggish when I managed to connect via ssh, but it wasn't as bad as 2 days ago. The admin webpage is almost unavailable (it took me 20 minutes of trial-and-error until I finally managed to log on), and now there is a further "phenomenon" concerning the entry webpage: all modules -even the ones that are not active- are now visible and the quick link list is empty (I recall reading somewhere that others are experiencing this too).

Thanks for your help!

brazza

Hi SL1000,

the system is working fine today; I have disabled a couple of services (and will disable some more) and will observe the performance the next few days. If it gets sluggish again, I'll post a fresh top output, sorted by memory usage.

At the moment 'top' shows:

Mem: 233684K used, 21952K free, 0K shrd, 3208K buff, 102308K cached
Load average: 1.52, 1.75, 1.45    (State: S=sleeping R=running, W=waiting)


  PID USER     STATUS   RSS  PPID %CPU %MEM COMMAND
 3581 admin    S        35M     1 35.4 14.3 btd
 2600 admin    S        13M     1  0.0  5.5 mt-daapd
 2540 admin    S       4892  2538  0.0  1.9 twonkymediaserv
13155 admin    R       3072  2323  1.1  1.2 qsmart.cgi
 4359 admin    S <     2200     1  0.0  0.8 iscsid
11697 admin    S       2076  3455  0.0  0.8 smbd
11912 admin    S       2020  3599  0.0  0.7 sshd
 2323 admin    S       1512     1  0.0  0.5 _thttpd_
 4308 admin    S       1352     1  0.0  0.5 qLogEngined
11930 admin    R       1312 11916  0.3  0.5 top
 2257 admin    S       1272     1  0.0  0.4 cupsd
 2330 guest    S       1260     1  0.0  0.4 proftpd
11916 admin    S       1176 11912  0.0  0.4 sh
 1307 admin    S       1164     1  0.0  0.4 qsmartd
 3455 admin    S       1036     1  0.0  0.4 smbd
 3055 admin    S        852     1  0.0  0.3 nmbd
 3374 admin    S        840     1  0.0  0.3 nmbd
 4329 admin    S        796     1  0.0  0.3 klogd.sh
 3705 admin    S        780     1  0.0  0.3 hd_util

I'm indeed using the download station right now; I'll wait until the download is done and then observe the memory and cpu time load.

Thanks again,

brazza

Hi,

I deactivated all applications -including the download station- and most services, but the system is still sluggish:

Mem: 228304K used, 27332K free, 0K shrd, 8648K buff, 119388K cached
Load average: 0.07, 0.91, 0.68    (State: S=sleeping R=running, W=waiting)


  PID USER     STATUS   RSS  PPID %CPU %MEM COMMAND
 3851 admin    S       6156  3417  0.0  2.4 smbd
 3417 admin    S       4936     1  0.0  1.9 smbd
 3249 admin    S       3576     1  0.0  1.3 afpd
 2925 admin    S       3480     1  0.0  1.3 nmbd
 2519 admin    S       3196     1  0.0  1.2 qsyncman
 2311 admin    S       3184     1  0.0  1.2 _thttpd_
 4179 admin    S       3144     1  0.0  1.2 qLogEngined
  680 admin    S       2904     1  0.0  1.1 bcclient
 3696 admin    S       2872     1  0.0  1.1 hd_util
 3087 admin    S       2864     1  0.0  1.1 Qthttpd
 2584 admin    S       2852     1  0.0  1.1 bcclient
 3770 admin    S       2836     1  0.0  1.1 upnpcd
 2553 admin    S       2824     1  0.0  1.1 picd
 3530 admin    S       2824  3417  0.0  1.1 smbd
 2580 admin    S       2788     1  0.0  1.0 hwmond
 2578 admin    S       2728     1  0.0  1.0 gpiod
 1305 admin    S       2724     1  0.0  1.0 hotswap
 2597 admin    S       2664     1  0.0  1.0 upsutil
 1310 admin    S       2612     1  0.0  1.0 qsmartd

Deactivation of the download station appears to have only saved 2-3MB of memory.

I tried copying some video files from the NAS to my Mac using scp. The copy process stalled on the first file and the transfer rate dropped to 5kB/s. This effect could be reproduced after rebooting the NAS.

Any other ideas?

brazza

Hello SL1000,

in the meanwhile I guess I have solved the problem(s).

First, it began to get worse and even the smallest files could no longer be opened; so I did a hdd check and it appears that one of the brand-new hdds is defect... argh! So I replaced it. However, the performance problem remained, and data transfer rate remained extremly low (about 5kB/s). Then, I decided to turn everything off - not only the NAS, but also my WLAN router, and voilá! After rebooting the WLAN router the data transfer rate was again as I expected. Somehow, the NAS and my router are having communication problems. I got a new router on Friday and since then everything is working fine.

Now I'll begin to restart the services and protocols I need and continue to observe performance. Hopefully, I won't bump into new problems any time soon...

Thanks again for your help!

brazza