~guilhem-fr/nginx/nginx-upstream-fair : changes

~guilhem-fr/nginx/nginx-upstream-fair » Changes from revision 64

From Revision 56 to 37

Rev	Summary	Authors	Date
56	Keep our own generation counter instead of relying on ngx_cy... Keep our own generation counter instead of relying on ngx_cycle	Grzegorz Nosek	15 years ago
55	Don't store pointers inside the shm segment at all Don't store pointers inside the shm segment at all (an exceptional use-case is the status handler but it takes care to do things safely)	Grzegorz Nosek	15 years ago
54	Use ngx_cycle instead of various tricks to store the current... Use ngx_cycle instead of various tricks to store the current cycle somewhere	Grzegorz Nosek	15 years ago
53	Fix (another) crash in status display after reload Fix (another) crash in status display after reload	Grzegorz Nosek	15 years ago
52	Debug message tweaks Debug message tweaks	Grzegorz Nosek	15 years ago
51	weight_mode=(idle\|peak) parameter support weight_mode=(idle\|peak) parameter support Weight mode 'idle' means that a backend is considered idle when servicing less than 'weight' requests. This has special meaning when running in no_rr mode. The backends are chosen from the following groups with descending priority: - backends with 1 <= nreq <= weight (by descending nreq) - totally idle backends - all other (busy) backends This mode (idle+no_rr) is particularly suited to small setups with backends started on demand. It requires care in bigger installations, as it may overload a range of backends without ever using others. Weight mode 'peak' means that no backend may serve more than 'weight' requests at once. Once this limit is reached, nginx starts to return 502 errors. This is useful when you want to limit the load on your backends at the price of errors sent to the client (although this might be an advantage in e.g. tiered load balancer setups). So the distinct modes of upstream_fair operation are: * default * no_rr * no_rr weight_mode=idle * weight_mode=peak All other combinations are more or less pointless, at least for now.	Grzegorz Nosek	15 years ago
50	Replace atomic ops with normal ones (except the spinlock, of... Replace atomic ops with normal ones (except the spinlock, of course)	Grzegorz Nosek	15 years ago
49	Fix status report for multiple fair upstreams Fix status report for multiple fair upstreams	Grzegorz Nosek	15 years ago
48	Use per-upstream spinlock to protect access to shared memory Use per-upstream spinlock to protect access to shared memory	Grzegorz Nosek	15 years ago
47	Fix crash in status handler if called right after reload Fix crash in status handler if called right after reload	Grzegorz Nosek	15 years ago
46	Use monotonic request counter instead of time data, track to... Use monotonic request counter instead of time data, track total number of requests per upstream and per backend	Grzegorz Nosek	15 years ago
45	The `fair' directive now takes parameters. The `fair' directive now takes parameters. Currently the only parameter is `no-rr' which disables round-robin behaviour, i.e. if you only need X backends to keep up with your peak load, backends X+1 should never receive any requests. Note that this does make the load balancer unfair as requests are definitely not distributed evenly.	Grzegorz Nosek	15 years ago
44	--with-extended-status support in upstream_fair --with-extended-status support in upstream_fair The data returned is more for debugging purposes than real production monitoring, so this is still proof-of-concept stage.	Grzegorz Nosek	15 years ago
43	Show upstream name in gdb show_fair_peers command Show upstream name in gdb show_fair_peers command	Grzegorz Nosek	15 years ago
42	Fix compile error on some platforms Fix compile error on some platforms Reported by Jeff Berg	Grzegorz Nosek	15 years ago
41	Update gdb macros Update gdb macros	Grzegorz Nosek	15 years ago
40	Move ->fails and ->current_weight to shm, remove fp->shared Move ->fails and ->current_weight to shm, remove fp->shared	Grzegorz Nosek	15 years ago
39	Update gdb macros to reflect latest changes Update gdb macros to reflect latest changes	Grzegorz Nosek	15 years ago
38	Incorporate fair_rr_peers into rr_peers structure Incorporate fair_rr_peers into rr_peers structure	Grzegorz Nosek	15 years ago
37	Mostly mechanical conversion to no longer use round_robin's ... Mostly mechanical conversion to no longer use round_robin's data structures	Grzegorz Nosek	15 years ago

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