Hi Eleizer, thanks for getting back to me. OK - yes. Its a VMWare virtual machine with 2 interfaces - 1 to outside world, one with the clients on. Its 2 processor, 4GB RAM, Debian wheezy 64bit I can't set it up as router only as it isn't a gateway, and I'm not keen on rejigging the network to test this, but traffic is likely to be ~10-20Mbps when it dies, connections per seconds in the hundreds. 'Kills it' is cpu usage hits 99.8-101% and stays there. And it stops forwarding requests. there is nothing I can see in the logs (3.2 gave a message about file descriptors) I've been through all this before with s squid 3.2 box, and the solution then was file descriptors. I've not set up disk caching on this setup (or at least I haven't got a line setting about disk cache - does it create one by default?). My next thing to try would be adding a disk cache maybe... Regards, Jim Potter BEC Network Manager On 31 January 2014 09:58, Eliezer Croitoru <eliezer@xxxxxxxxxxxx> wrote: > Hey Mr, > > I will might not find the solution in one sec but.. > What interfaces do you have? > What is the network load? > Have you tried to use SMP on this machine? > In order to analyze the basic traffic size you can use the machine as a > "router" only based on linux. > This would give you the basic picture of the network traffic load. > The basic information is RPS or Connections Per Second. > > What are the symptoms of "kills" it? > If you do have some logs that will describe it will help to see them. > > Thank, > Eliezer > > > On 31/01/14 11:48, Mr J Potter wrote: >> >> Hi all, >> >> I'm trying to roll out SSLBump internet filtering. I've got it all >> working fine under test conditions, but squid grinds to a halt using >> 100% CPU. >> >> I've gone through all the comments on this online, and it seems all to >> point to file descriptors. (I think I've fixed this proviously by >> setting this value with squid 3.2). >> >> In my current setup I don't have any disk cache, and adding >> file_descriptors doesn't fix it. It only seems to go when load hist a >> certain threshold. It can run fine all day, but when I add more >> traffic, it just dies. I.m pretty sure its nothing to do with SSLBump >> as I use this server for all youtube traffic via SSLBUmp (its fine) >> but when I put everything else through with no SSL bump, the load >> seems to kill it. >> >> ... and it doesn't seem to be using the 2GB RAM allocated to it for >> cache. the whole machine only uses ~750MB. >> >> Any idea anyone? config files and details below... >> >> thankyou >> >> Jim Potter >> BEC Network Manager > > <SNIP>