[Info-vax] what quota to change when one increase FTP service /limit=xxx ?

H Vlems hvlems at freenet.de
Fri Jan 15 03:42:46 EST 2010


On 14 jan, 17:37, Jan-Erik Soderholm <jan-erik.soderh... at telia.com>
wrote:
> Pierre wrote:
> > I changed the limit of simultaneous incoming FTP connections (TCPIP>
> > set service ftp/limit=255) but when a large number of connections
> > arise in a very short period of time, the TCPIP$FTP_1 process dies
> > with
>
> > %SYSTEM-F-EXITFORCED, forced exit of image or process by SYS$DELPRC
>
> > as a final status in the accounting and
>
> > %SYSTEM-F-EXBYTLM, exceeded byte count quota
> > %TCPIP-E-FTP_ACPTCN, accepting connection failed
>
> > in [TCPIP$FTP]TCPIP$FTP_RUN.LOG
>
> > I changed Bytlm in the UAF accordingly but have no heuristic to
> > compute the _right_ value.
> > BTW, I think I may also have to increase other quota such as Fillm,
> > Astlm or Biolm (# of termination mailboxes between the listener and
> > the ftp chidren, pending IO/AST with these mailboxes, maybe BG
> > devices)
>
> > do you know any rule of thumb on what to change in the UAF when the /
> > limit=xxx increase ?
>
> >   HP TCP/IP Services for OpenVMS Alpha Version V5.4 - ECO 5
> >   on a COMPAQ AlphaServer DS20E 666 MHz running OpenVMS V7.3-2
>
> If the manuals don't have any calculations, I'd simply say
> "double it" and see what happens. Start with the one that
> the error message reports (BYTLM).- Tekst uit oorspronkelijk bericht niet weergeven -
>
> - Tekst uit oorspronkelijk bericht weergeven -

An increase of BYTLM isn't expensive, not on an Alpha anyway. So
doubling it is a good start.
Instead of changing the value in UAF you might consider changing it in
SYSGEN.
Hans



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