Thanks, good tool: I'm using it to take a view into the routes table. El Mie, 10 de Enero de 2007, 20:40, Jesper Dangaard Brouer escribió: > > The values looks reasonable, garbage collection start (gc_thresh:32768) > fairly early, but I often see that the GC cannot keep up. > > The maximum size of the route cache max_size=524288 is okay, but it > depends on the usage pattern. On my production systems I has increased > max_size to 2 million, to keep up! > > Another interesting value is secret_interval:600, which is the interval > the route cache is flushed, in seconds, that is 10 minuts. > > 524288/600 = 873 packet/sec to new destinations. > > You should realize that filling the route cache in 10 minuts can happen, > as it only requires 873 packet/sec to new destinations. > > > What to do next: > > Monitor the route cache, to see whats actually happening. The route cache > counters are located in /proc/net/stat/rt_cache, but is not very human > readable. Use the tool "rtstat" to monitor the route cache. > > The rtstat tool can be downloaded from Roberts site: > ftp://robur.slu.se/pub/Linux/net-development/rt_cache_stat > > Cheers, > Jesper Brouer > > -- > ------------------------------------------------------------------- > MSc. Master of Computer Science > Dept. of Computer Science, University of Copenhagen > Author of http://www.adsl-optimizer.dk > ------------------------------------------------------------------- > > > > On Wed, 10 Jan 2007, ArcosCom Linux User wrote: > >> Here are: >> >> # grep . /proc/sys/net/ipv4/route/* >> /proc/sys/net/ipv4/route/error_burst:5000 >> /proc/sys/net/ipv4/route/error_cost:1000 >> grep: /proc/sys/net/ipv4/route/flush: Operación no permitida >> /proc/sys/net/ipv4/route/gc_elasticity:8 >> /proc/sys/net/ipv4/route/gc_interval:60 >> /proc/sys/net/ipv4/route/gc_min_interval:0 >> /proc/sys/net/ipv4/route/gc_min_interval_ms:500 >> /proc/sys/net/ipv4/route/gc_thresh:32768 >> /proc/sys/net/ipv4/route/gc_timeout:300 >> /proc/sys/net/ipv4/route/max_delay:10 >> /proc/sys/net/ipv4/route/max_size:524288 >> /proc/sys/net/ipv4/route/min_adv_mss:256 >> /proc/sys/net/ipv4/route/min_delay:2 >> /proc/sys/net/ipv4/route/min_pmtu:552 >> /proc/sys/net/ipv4/route/mtu_expires:600 >> /proc/sys/net/ipv4/route/redirect_load:20 >> /proc/sys/net/ipv4/route/redirect_number:9 >> /proc/sys/net/ipv4/route/redirect_silence:20480 >> /proc/sys/net/ipv4/route/secret_interval:600 >> >> >> El Mie, 10 de Enero de 2007, 16:01, Jesper Dangaard Brouer escribió: >>> >>> >>> On Wed, 10 Jan 2007, ArcosCom Linux User wrote: >>> >>>> El Mie, 10 de Enero de 2007, 8:15, Patrick McHardy escribió: >>>>> ArcosCom Linux User wrote: >>>>>> The log says: >>>>>> Dec 30 00:52:27 cura kernel: dst cache overflow >>> >>> The log message "dst cache overflow" is normally related to overflow of >>> the route cache. The max_size of the route cache can be adjusted >>> through >>> /proc/sys/net/ipv4/route/max_size. >>> >>> What is your settings in /proc/sys/net/ipv4/route/? >>> >>> Run command: >>> grep . /proc/sys/net/ipv4/route/* >>> >>> Hilsen >>> Jesper Brouer >>> >>> -- >>> ------------------------------------------------------------------- >>> MSc. Master of Computer Science >>> Dept. of Computer Science, University of Copenhagen >>> Author of http://www.adsl-optimizer.dk >>> ------------------------------------------------------------------- >
