memory alloc and probe

[Hernán Marsili]

Hi,

We have two problems while using Varnish:

1) we actually don't know how to determine if the amount of memory we
assigned to the MALLOC is enough or not. varnishstat -1 show this:


SMA.s0.c_req               58035        34.08 Allocator requests

SMA.s0.c_fail                  0         0.00 Allocator failures

SMA.s0.c_bytes        4830340101   2836371.17 Bytes allocated

SMA.s0.c_freed        2864339421   1681937.42 Bytes freed

SMA.s0.g_alloc             44952          .   Allocations outstanding

SMA.s0.g_bytes        1966000680          .   Bytes outstanding

SMA.s0.g_space         181482968          .   Bytes available

SMA.Transient.c_req        72960        42.84 Allocator requests

SMA.Transient.c_fail           0         0.00 Allocator failures

SMA.Transient.c_bytes   4366160011   2563805.06 Bytes allocated

SMA.Transient.c_freed   4365783718   2563584.10 Bytes freed

SMA.Transient.g_alloc          350          .   Allocations outstanding

SMA.Transient.g_bytes       376293          .   Bytes outstanding

SMA.Transient.g_space            0          .   Bytes available

2) PROBE: we configured the probes as follows. What we noticed is, once the
backend is mark as sick, even when the service is restored, Varnish
continues to answering with a GURU MEDITATION. Is like VARNISH never checks
back again the backend to see if it is healthy again. Is that a
misconfiguration we have?

 .probe = {

      .url = "http://www.tycsports.com/balancer/alive1.html";

      .interval = 30s;   #chequear cada X seg

      .timeout = 10s;    #timeout de la prueba

      .window = 10;      #el probing funciona como sliding window

      .threshold = 8;   # cuantos del window tienen que estar ok para
declararl$

Any help will be much appreciated! tnx :)

Regards,
Hernán.
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