Messages in this thread |  | | Date | Sat, 28 Apr 2001 13:55:01 -0700 | From | Tim Moore <> | Subject | Re: linux and high volume web sites |
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David Lang wrote: > > watch the resonate heartbeat and see if it is getting lost in the network > traffic (the resonate logs will show missing heartbeat packets). think > seriously of setting the resonate stuff to run at a higher priority so > that it doesn't get behind. > > depending on how high your network traffic is seriously look at putting in > a second nic and switch to move the NFS traffic off the network that has > the internet traffic and hearbeat. > > I had the same problem with central dispatch a couple years ago when first > implementing it. the exact details of the problem that I ran into should > have been fixed by now (mostly having to do with large number of virtual > IP addresses) but the symptoms were the same.
In addition to the above make sure there's enough bandwidth to the filer (eg- good switches, multiple ethernets).
Consider moving to 2.2.19. Significant VM changes after 2.2.19pre3 which could account for the freezes.
rgds, tim.
> > I have a high volume web site under linux : > > kernel is 2.2.17 > > hardware is 5 bi-PIII 700Mhz / 512Mb, eepro100 > > all server are diskless (nfs on an netapp filer) except for tmp and swap > > > > dispatch is done by the Resonate product > > > > web server is apache+php (something like 400 processes), database > > backend is a mysql on the same hardware > > > > in high volume from time to time machines are "freezing" then after a > > few seconds they "reappear" and response timne is > > > > > > how can I investigate all these problems ?
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