If it helps. This doesn't happen on NFS from the exact same client. How do I file a bug?
On Tue, Mar 8, 2016 at 1:51 PM, Mini Trader <[email protected]> wrote: > Simple example. > > 1 Server 1 client. > > Restart service everything is fast. A few hours later from same client > (nothing happening concurrently) speed is slow. Restart service again, > speed is fast. > > Its like CIFS starts off fast than somehow for whatever reason if it is > not used, the connection for my CIFS drives to the server becomes slow. > Also this only happens when the client is downloading. Not when uploading > to the server that is always fast. > > On Tue, Mar 8, 2016 at 1:42 AM, Jim Klimov <[email protected]> wrote: > >> 8 марта 2016 г. 6:42:13 CET, Mini Trader <[email protected]> >> пишет: >> >Is it possible that CIFS will ignore TCP buffer settings after a while? >> > >> >I've confirmed my systems max transfer rate using iperf and have tuned >> >my >> >buffers accordingly. For whatever reason CIFS seems to forget these >> >settings after a while as speed drops significantly. Issuing a restart >> >of >> >the service immediately appears to restore the setting as transfer >> >speed >> >becomes normal again. >> > >> >Any ideas why this would happen? >> > >> > >> >------------------------------------------------------------------------ >> > >> >_______________________________________________ >> >OmniOS-discuss mailing list >> >[email protected] >> >http://lists.omniti.com/mailman/listinfo/omnios-discuss >> >> As a random guess from experience with other network stuff - does the >> speed-drop happen on a running connection or new ones too? Do you have >> concurrent transfers at this time? >> >> Some other subsystems (no idea if this one too) use best speeds for new >> or recently awakened dormant connections, so short-lived bursts are fast - >> at expence of long-running active bulk transfers (deemed to be bulk because >> they run for a long time). >> >> HTH, Jim >> -- >> Typos courtesy of K-9 Mail on my Samsung Android >> > >
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