Why am I seeing a ton of SyS_poll?












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I have two different Linux desktops connected to a Synology NAS like so:



10.0.0.20:/volume1/chronicle  /chronicle        nfs rw,hard,intr 0 0


and I am frequently seeing my computer locking up entirely, with the system monitor showing IOWait which is apparently blocking. For instance, a movie playback will freeze, but (most of the time) I can still quit VLC and restart it. I could also copy the movie file to my local SSD, which would (a significant amount of the times I've tried) have pauses in the transfer while doing this IOWait thing. If I do things not involving the NAS share, I'm generally also not experiencing any freezing.



I've tried figuring out why, but I don't understand the man pages and other resources regarding IOWait, poll, and epoll.



What can I do to identify and resolve this issue?



Partial screen dump of my process list









share



























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    I have two different Linux desktops connected to a Synology NAS like so:



    10.0.0.20:/volume1/chronicle  /chronicle        nfs rw,hard,intr 0 0


    and I am frequently seeing my computer locking up entirely, with the system monitor showing IOWait which is apparently blocking. For instance, a movie playback will freeze, but (most of the time) I can still quit VLC and restart it. I could also copy the movie file to my local SSD, which would (a significant amount of the times I've tried) have pauses in the transfer while doing this IOWait thing. If I do things not involving the NAS share, I'm generally also not experiencing any freezing.



    I've tried figuring out why, but I don't understand the man pages and other resources regarding IOWait, poll, and epoll.



    What can I do to identify and resolve this issue?



    Partial screen dump of my process list









    share

























      0












      0








      0








      I have two different Linux desktops connected to a Synology NAS like so:



      10.0.0.20:/volume1/chronicle  /chronicle        nfs rw,hard,intr 0 0


      and I am frequently seeing my computer locking up entirely, with the system monitor showing IOWait which is apparently blocking. For instance, a movie playback will freeze, but (most of the time) I can still quit VLC and restart it. I could also copy the movie file to my local SSD, which would (a significant amount of the times I've tried) have pauses in the transfer while doing this IOWait thing. If I do things not involving the NAS share, I'm generally also not experiencing any freezing.



      I've tried figuring out why, but I don't understand the man pages and other resources regarding IOWait, poll, and epoll.



      What can I do to identify and resolve this issue?



      Partial screen dump of my process list









      share














      I have two different Linux desktops connected to a Synology NAS like so:



      10.0.0.20:/volume1/chronicle  /chronicle        nfs rw,hard,intr 0 0


      and I am frequently seeing my computer locking up entirely, with the system monitor showing IOWait which is apparently blocking. For instance, a movie playback will freeze, but (most of the time) I can still quit VLC and restart it. I could also copy the movie file to my local SSD, which would (a significant amount of the times I've tried) have pauses in the transfer while doing this IOWait thing. If I do things not involving the NAS share, I'm generally also not experiencing any freezing.



      I've tried figuring out why, but I don't understand the man pages and other resources regarding IOWait, poll, and epoll.



      What can I do to identify and resolve this issue?



      Partial screen dump of my process list







      linux io manjaro freeze nas





      share












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      asked 6 mins ago









      KlaymenDKKlaymenDK

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