Chris Pollard Posted August 18, 2012 Share Posted August 18, 2012 Might be a loose cable, you could post a full smart report here for people to look at. Should be instructions in the wiki. Quote Link to comment
Joe L. Posted August 18, 2012 Share Posted August 18, 2012 Might be a loose cable, you could post a full smart report here for people to look at. Should be instructions in the wiki. A smart report might show something, but odds are a syslog from the period of time where the poor performance is occurring is more useful. Quote Link to comment
ix400 Posted August 18, 2012 Author Share Posted August 18, 2012 I think I can exclude a cable causing the issues. I swapped the drive to a different bay (I'm using Supermicro's CSE-M35 enclosures), and that doesn't help either. Here is a log file: https://dl.dropbox.com/u/7782292/log.rtf It was recorded during two buffering events. However, during the time the buffering happened no entries were made in the log. In other words, the buffering occurred in the 5 minutes after the last log entry. As mentioned before, during that time I observed high %wa values, and it seems to happen when the movie file is opened for the first time after a reboot. The 2nd try to play the same movie from the beginning works without buffering, and %wa stays low. I will also generate a smart-report in the next hours. Thanks for your help, Chris Quote Link to comment
ix400 Posted August 19, 2012 Author Share Posted August 19, 2012 Hi, I've finished preparing the smart reports: https://dl.dropbox.com/u/7782292/smart_disc_10_long.txt https://dl.dropbox.com/u/7782292/smart_disc_10_short.txt To me the results looks like as if the disc is okay. What else can I do? Chris Quote Link to comment
ix400 Posted August 19, 2012 Author Share Posted August 19, 2012 ... and I have to add: Yesterday I configured the LAN as 100Mb in order to see if the buffering is influenced by that. I had the feeling that I see it less frequently, but it's still there. Anyhow, I looked for dropped packets this morning. I used the server quite a bit yesterday, so this log is based on more network traffic: root@Neon:~# ifconfig eth0 Link encap:Ethernet HWaddr 00:30:48:b2:0f:e6 inet addr:192.168.1.120 Bcast:192.168.1.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:8051675 errors:0 dropped:27 overruns:0 frame:0 TX packets:15119121 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:572095857 (545.5 MiB) TX bytes:4000581494 (3.7 GiB) Interrupt:43 Base address:0x8000 27 dropped packets. I guess in 1000Mb moder the rate would have been even higher, wouldn't it? Chris Quote Link to comment
ix400 Posted August 19, 2012 Author Share Posted August 19, 2012 ... but if the network would cause the problems also the movie playback from discs 1 to 9 would be effected. But only disc 10 causes the problems and shows the high %wa during the first minute of a started movie playback. Chris Quote Link to comment
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