Hello Zdenek I think you suggestion is constructive， some unnecessary operations in udev rules waster too much system resoure(CPU etc.) It is another way to promote multipath efficiency, could you put forward more specific amendment?
Regards, Tang 发件人: Zdenek Kabelac <zdenek.kabe...@gmail.com> 收件人: tang.jun...@zte.com.cn, Benjamin Marzinski <bmarz...@redhat.com>, 抄送: zhang.ka...@zte.com.cn, dm-devel@redhat.com, Martin Wilck <mwi...@suse.com>, Bart Van Assche <bart.vanass...@sandisk.com> 日期: 2016/11/29 17:22 主题: Re: [dm-devel] Improve processing efficiency for addition and deletion of multipath devices 发件人: dm-devel-boun...@redhat.com Dne 23.11.2016 v 02:08 tang.jun...@zte.com.cn napsal(a): > So, now we have at least 4 ways to improve mutliapth efficiency: > 1) Filtering uevents; > 2) Merger uevents; > 3) Using separate locks for mpvec and pathvec; > 4) Get rid of the gazillion waiter threads. > > This is exciting, but how do we achieve this blueprint? > Can we set up some working groups and develop it in parallel > to implement each improvement since most of them are independent? > I'm missing here the analysis of impact on performance. Do we have 'perf' traces and other reports where is the CPU wasted ? While surely solving all issues make sense - there are some tasks which have major impact on speed - while others user will most not notice at all. Regards Zdenek -- dm-devel mailing list dm-devel@redhat.com https://www.redhat.com/mailman/listinfo/dm-devel
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