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seen Feb 18 at 14:34

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Jan
9
asked Nginx not honoring must-revalidate
Jan
6
comment MySQL connection errors when client server bandwidth is exhausted
tcp should handle the bandwidth congestion just fine... however mysql has problems. nothing else has. since i do not use only atomic statements (no transactions or stuff like lastinsertid) i ended up writing a database connection object that sends all the sql statmenets to a remote rest http api that serializes the response - that works just fine.
Jan
3
comment MySQL connection errors when client server bandwidth is exhausted
The connection is truly saturated, and the traffic is also not unwanted (it is a download server). I cannot set up a separate since the server is only connected with 1 gbit port. I know that the saturation leads to dropping / queueing of packets (depending of the handling on the network layer). My question is why only mysql is having problems and all other tcp connections (ssh, http) work just fine, only a little slower?
Jan
3
comment MySQL connection errors when client server bandwidth is exhausted
@jeffatrackaid I am using PHP (PHP 5.4.6-1ubuntu1.5), however the error can be reproduced with the terminal mysql client version (mysql Ver 14.14 Distrib 5.5.34). My network is really exhausted (I server downloads from that server that saturate the bandwidth completely). I know that this will cause packets to be dropped, however I was wondering why ssh, http etc work just fine and only mysql does not. Should not packets be re-sent by tcp?
Jan
2
asked MySQL connection errors when client server bandwidth is exhausted
Dec
29
asked Limit concurrent connections in nginx across multiple servers
Dec
16
answered How can it be that mounting and unmounting takes hours to complete?
Dec
15
comment How can it be that mounting and unmounting takes hours to complete?
yeah, now i just waited for more than 2 hours and then it actually went through! i already tried to update the firmware controller but it seems that i need to get the firmware from some legacy sites... the official site does just not come up with anything...
Dec
15
comment How can it be that mounting and unmounting takes hours to complete?
lshw tells me there is a 3ware 9650SE controller, so i figure there is an expander or the ports would not suffice. probably built into the backplane. i also tried reversing the order of the drives, the behaviour keeps the same. after about 15 drives it starts hanging. i am also using luks encryption but i produced the exact same behaviour across the board without it, so this is not the reason.
Dec
15
comment How can it be that mounting and unmounting takes hours to complete?
unfortunately the issue also occurs when the filesystem is freshly creating and also immediately after a manual filesystem check..
Dec
15
comment How can it be that mounting and unmounting takes hours to complete?
i can also read data from the drive using dd (even when it hangs). and i have 24 drives because i need to store a lot of files and dont need a raid because this is managed on the application level
Dec
15
comment How can it be that mounting and unmounting takes hours to complete?
well the behaviour also occurs immediately after freshly creating the filesystem. also i should mention that there is nothing on the disks. they are empty and no applications are accessing them. i also tried debian wheezy without success (same behaviour)