After the upgrade to 9.3, not sure exactly which version, but noticed the proxy performance was lagging. Then when the upgrade to 9.309-3 the proxy was just stop passing traffic and it would have to be manually restarted. One major issue besides the proxy stopping is that the disk utilization in ATOP is reaching 100% quite often. Cpu and ram utilization is low.
Some of the errors are noted below.
sys="SecureWeb" sub="http" request="(nil)" function="http_parser_context_execute" file="http_parser_context.c" line="95" message="Unable to parse a http message of 9 bytes (HPE_INVALID_METHOD: invalid HTTP method)"
2015:04:02-11:04:23 httpproxy[22402]: id="0003" severity="info" sys="SecureWeb" sub="http" request="(nil)" function="read_request_headers" file="request.c" line="1536" message="unable to parse a http message on handler 2250 (Resource temporarily unavailable)"
sub="http" request="(nil)" function="plain_write_vector" file="epoll.c" line="1098" message="Write error on the epoll handler 1901 (Broken pipe)"
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