Dear all, I have a Squid transparent proxy which uses 40 Squirm URL rewriter processes. Everything worked fine until today, when Squid crashed after an error "179 pending requests queued": 2011/11/15 13:55:41| WARNING: All redirector processes are busy. 2011/11/15 13:55:41| WARNING: 40 pending requests queued 2011/11/15 13:55:41| Consider increasing the number of redirector processes in your config file. 2011/11/15 14:05:41| WARNING: All redirector processes are busy. 2011/11/15 14:05:41| WARNING: 179 pending requests queued 2011/11/15 14:05:41| storeDirWriteCleanLogs: Starting... 2011/11/15 14:05:41| WARNING: Closing open FD 190 2011/11/15 14:05:41| 65536 entries written so far. 2011/11/15 14:05:41| 131072 entries written so far. 2011/11/15 14:05:41| 196608 entries written so far. 2011/11/15 14:05:41| 262144 entries written so far. 2011/11/15 14:05:41| 327680 entries written so far. 2011/11/15 14:05:41| 393216 entries written so far. 2011/11/15 14:05:41| 458752 entries written so far. 2011/11/15 14:05:41| 524288 entries written so far. 2011/11/15 14:05:41| 589824 entries written so far. 2011/11/15 14:05:42| Finished. Wrote 633017 entries. 2011/11/15 14:05:42| Took 1.49 seconds (426234.18 entries/sec). FATAL: Too many queued redirector requests Squid Cache (Version 3.1.7): Terminated abnormally. CPU Usage: 91414.241 seconds = 55144.038 user + 36270.203 sys Maximum Resident Size: 0 KB Page faults with physical i/o: 8 Memory usage for squid via mallinfo(): total space in arena: 1007116 KB Ordinary blocks: 1003347 KB 100368 blks Small blocks: 0 KB 1 blks Holding blocks: 27164 KB 8 blks Free Small blocks: 0 KB Free Ordinary blocks: 3768 KB Total in use: 1030511 KB 102% Total free: 3768 KB 0% Restarting gave this error: 2011/11/15 14:14:02| WARNING: Disk space over limit: 11037556 KB > 10240000 KB 2011/11/15 14:14:02| IpIntercept.cc(137) NetfilterInterception: NF getsockopt(SO_ORIGINAL_DST) failed on FD 10: (2) No such file or directory 2011/11/15 14:14:02| IpIntercept.cc(137) NetfilterInterception: NF getsockopt(SO_ORIGINAL_DST) failed on FD 12: (2) No such file or directory 2011/11/15 14:14:02| IpIntercept.cc(137) NetfilterInterception: NF getsockopt(SO_ORIGINAL_DST) failed on FD 14: (2) No such file or directory 2011/11/15 14:14:02| IpIntercept.cc(137) NetfilterInterception: NF getsockopt(SO_ORIGINAL_DST) failed on FD 16: (2) No such file or directory 2011/11/15 14:14:02| IpIntercept.cc(137) NetfilterInterception: NF getsockopt(SO_ORIGINAL_DST) failed on FD 18: (2) No such file or directory (... snipped 60 entries similar as the one above ... ) 2011/11/15 14:14:05| WARNING: All redirector processes are busy. 2011/11/15 14:14:05| WARNING: 40 pending requests queued 2011/11/15 14:14:05| Consider increasing the number of redirector processes in your config file. I tried increasing redirect_children to 300 in squid.conf, but since each children spawns as a process, this brought the system to its knees. Even with no active HTTP clients. What is the max/reasonable number of Squirm redirect_children? These two lines also puzzle me. I could rebuild the cache to get rid of it, but I'd like to know why this occurred: 2011/11/15 14:14:02| WARNING: Disk space over limit: 11037556 KB > 10240000 KB Total in use: 1030511 KB 102% Thanks a lot for your thoughts, Leonardo
