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May
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awarded  Self-Learner
May
17
revised ubuntu kvm disk io slowdown after some tyme
added similar question
May
17
revised ubuntu kvm disk io slowdown after some tyme
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May
17
comment ubuntu kvm disk io slowdown after some tyme
Look likes this helps. sync && echo 3 > /proc/sys/vm/drop_caches
May
17
awarded  Yearling
May
16
answered Ubuntu broken machine (backup mysql via FTP)
May
15
comment ubuntu kvm disk io slowdown after some tyme
Host system uses software raid md. raid level 1: NCQ should be off, write cache should be off. About "benchmark disk performance" -- i dont benchmark it, it's spead about 20-30 MB/s on writting -- is OK to me. but some time later it drops to very low level, it is not possible to work with write speed max 1 MB/s at server. Why this happens - i dont know.
May
15
comment ubuntu kvm disk io slowdown after some tyme
dd bs=1024M count=1 if=/dev/zero of=filename conv=fdatasync ~ 20 MB/s # dd bs=128M count=8 if=/dev/zero of=filename conv=fdatasync ~ 22 MB/s # avarage RAM used 2 of total 16 GB ## 10 MB/s is slow, but i've got 1 MB/s after some time. thats looks like bug maybe, system isnt busy .
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asked ubuntu kvm disk io slowdown after some tyme
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27
comment linux pseudo files for rotating streams
This application is like that ones, but doesnt have this feature. Even vlc can make output to pipe (fifo)
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26
revised linux pseudo files for rotating streams
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asked linux pseudo files for rotating streams
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