Kim, 1. My message size is around 80kb, so what would be suggested values for the blow properties?
wcache-page-size wcache-num-pages tpl-wcache-num-pages tpl-wcache-page-size right now i have all defaults, so i am trying to see if i can tune these values for my messages size to avoid those AIO busy cases. I have try to define those properties/options in qpidd.conf file but when i run qpid-config queues its not showing those values on my queues created by client application, do i have to define those options when i create queue instead of keep them in qpidd.conf? 2. What is difference b/w tpl-wcache-page-size and wcache-page-size Thanks, Ram On Fri, Nov 16, 2018 at 9:26 AM Kim van der Riet <kvand...@redhat.com> wrote: > There is little documentation on linearstore. Certainly, the Apache docs > don't contain much. I think this is an oversight, but it won't get fixed > anytime soon. > > Kim > > On 11/16/18 12:11 PM, rammohan ganapavarapu wrote: > > Any one point me to the doc where i can read internals about how > > linearstore works and how qpid uses it? > > > > Thanks, > > Ram > > > > On Mon, Nov 12, 2018 at 8:43 AM rammohan ganapavarapu < > > rammohanga...@gmail.com> wrote: > > > >> Kim, > >> > >> Thanks for clearing that up for me, does it support SAN storage blocks. > >> Where can i read more about linearstore if i want to know the low level > >> internals? > >> > >> Ram > >> > >> On Mon, Nov 12, 2018 at 8:32 AM Kim van der Riet <kvand...@redhat.com> > >> wrote: > >> > >>> The linearstore relies on using libaio for its async disk writes. The > >>> O_DIRECT flag is used, and this requires a block of aligned memory to > >>> serve as a memory buffer for disk write operations. To my knowledge, > >>> this technique only works with local disks and controllers. NFS does > not > >>> allow for DMA memory writes to disk AFAIK, and for as long as I can > >>> remember, has been a problem for the linearstore. With some work it > >>> might be possible to make it work using another write technique though. > >>> NFS has never been a "supported" medium for linearstore. > >>> > >>> On 11/9/18 4:28 PM, rammohan ganapavarapu wrote: > >>>> But how does NFS will cause this issue, i am interested to see because > >>> we > >>>> are using NFS (V4 version) in some environments, so wanted to learn > >>> tunings > >>>> when we use NFS. > >>>> > >>>> Thanks, > >>>> Ram > >>>> > >>>> On Fri, Nov 9, 2018 at 6:48 AM rammohan ganapavarapu < > >>>> rammohanga...@gmail.com> wrote: > >>>> > >>>>> Sorry, i thought it's NFS but it's actually SAN storage volume. > >>>>> > >>>>> Thanks, > >>>>> Ram > >>>>> > >>>>> On Fri, Nov 9, 2018, 2:10 AM Gordon Sim <g...@redhat.com wrote: > >>>>> > >>>>>> On 08/11/18 16:56, rammohan ganapavarapu wrote: > >>>>>>> I was wrong about the NFS for qpid journal files, looks like they > >>> are on > >>>>>>> NFS, so does NFS cause this issue? > >>>>>> Yes, I believe it does. What version of NFS are you using? > >>>>>> > >>>>>> > --------------------------------------------------------------------- > >>>>>> To unsubscribe, e-mail: users-unsubscr...@qpid.apache.org > >>>>>> For additional commands, e-mail: users-h...@qpid.apache.org > >>>>>> > >>>>>> > >>> --------------------------------------------------------------------- > >>> To unsubscribe, e-mail: users-unsubscr...@qpid.apache.org > >>> For additional commands, e-mail: users-h...@qpid.apache.org > >>> > >>> > > --------------------------------------------------------------------- > To unsubscribe, e-mail: users-unsubscr...@qpid.apache.org > For additional commands, e-mail: users-h...@qpid.apache.org > >
