miams at reisys.com
Thu Mar 11 10:52:30 CET 2010
We are seeing an issue where one-for-one increments in "sms_nreq/SMS allocator requests" are resulting in 503 errors. We are not getting any backend related errors.
This is happening on a very small percentage of the page requests, but it is repeatable in our load-tests.
A couple questions:
1) Is this a problem that has been seen before? Is there a known configuration adjustment, work-around?
2) What specific function is performed by the SMS metrics measured in varnishstat? The most I've found in my digging is that it is used for internal memory house-keeping. There was a similar inquiry a couple of days ago on this message-list regarding SMS, SMA, SM, etc. It would be good if there was something published somewhere that elaborates on what these measure.
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