On 01/17/2018 09:15 AM, Heiler Bemerguy wrote: > Everytime I enable this: > > range_offset_limit -1 fullDLext > quick_abort_min 0 KB > quick_abort_max 0 KB > quick_abort_pct 95 > > Our link is fully utilized for a whole day if at least 2 users tries to > get the same file with range (206) requests (Windows Update does this) > Rockstore with SMP and 3.5.27 > > The file will be simultaneously downloaded from the beginning by each of > workers that got the request, and in the end it won't be cached, giving > a SWAPFAIL_MISS message.. This easily TOPS our link for a whole day > (maybe till the users turn their computers off..?) > > It's a known bug, as I filled a bug report years ago.. it was never > fixed... To avoid misundertanding, there are at least three overlapping issues here. Only one of them is a bug: * The fact that Squid may fetch more data than is necessary when configured to prefetch is not a bug. Both range_offset_limit and quick_abort_* are essentially prefetching options -- they tell Squid to fetch more than what the asking client needs. * The fact that multiple workers may attempt concurrent downloads of the same object is not necessarily a bug. Squid behavior in such cases is controlled by collapsed_forwarding (and various HTTP rules). * The fact that the concurrently fetched cachable object may never be cached is a bug. It may be fixed as a side effect of the pending pull request #46 changes, but I am not sure. Alex. > Em 17/01/2018 12:36, Alex Rousskov escreveu: >> On 01/17/2018 05:47 AM, joseph wrote: >>> Amos Jeffries wrote >>>> "range_offset_limit N" only affects the initial starting point for a >>>> transaction. If a client wants to start reading a range somewhere in the >>>> first N bytes Squid will request the full file in order to cache it for >>>> future requests. Otherwise only the range the client wants will be >>>> requested - and cannot (yet) be cached. >>> meaning it will continue dose not restart >> You have misinterpreted Amos's response: Whether Squid continues after >> the client disappears depends on quick_abort_* settings, not >> range_offset_limit settings. >> >> >> HTH, >> >> Alex. >> _______________________________________________ >> squid-users mailing list >> squid-users@xxxxxxxxxxxxxxxxxxxxx >> http://lists.squid-cache.org/listinfo/squid-users > > > > _______________________________________________ > squid-users mailing list > squid-users@xxxxxxxxxxxxxxxxxxxxx > http://lists.squid-cache.org/listinfo/squid-users > _______________________________________________ squid-users mailing list squid-users@xxxxxxxxxxxxxxxxxxxxx http://lists.squid-cache.org/listinfo/squid-users
