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Message-ID: <5743349.5WGxWa1M1u@ei.h3.stusta.mhn.de> Date: Thu, 24 Oct 2013 00:52:58 +0200 From: Wolfgang Walter <linux@...m.de> To: Eric Dumazet <eric.dumazet@...il.com> Cc: David Miller <davem@...emloft.net>, hannes@...essinduktion.org, netdev@...r.kernel.org, klassert@...hematik.tu-chemnitz.de Subject: Re: Big performance loss from 3.4.63 to 3.10.13 when routing ipv4 On Wednesday 23 October 2013 10:06:32 Eric Dumazet wrote: > On Wed, 2013-10-23 at 18:59 +0200, Wolfgang Walter wrote: > > Ah, ok. I use SLUB, but SLABINFO=y. > > > > Without much traffic it is: > > > > # grep dst /proc/slabinfo > > xfrm_dst_cache 4435 4608 448 36 4 : tunables 0 0 0 > > : slabdata 128 128 0 > > > > on the big one. > > > > I can recompile the kernels with SLAB instead of SLUB if SLAB gives more > > usefull infos. > Not needed, because it seems we do not merge this SLUB cache with > another one. Ok. I can't see xfrm_dst_cache on 32bit-systems, though. > > So please post this information, because I believe the default should be > 65536, not 1024 or 4096 > Indeed I already saw higher values, at the moment I see: # while true; do grep dst /proc/slabinfo ; sleep 1; done xfrm_dst_cache 12636 12636 448 36 4 : tunables 0 0 0 : slabdata 351 351 0 xfrm_dst_cache 12636 12636 448 36 4 : tunables 0 0 0 : slabdata 351 351 0 xfrm_dst_cache 12636 12636 448 36 4 : tunables 0 0 0 : slabdata 351 351 0 xfrm_dst_cache 12636 12636 448 36 4 : tunables 0 0 0 : slabdata 351 351 0 xfrm_dst_cache 12636 12636 448 36 4 : tunables 0 0 0 : slabdata 351 351 0 xfrm_dst_cache 12636 12636 448 36 4 : tunables 0 0 0 : slabdata 351 351 0 xfrm_dst_cache 12636 12636 448 36 4 : tunables 0 0 0 : slabdata 351 351 0 xfrm_dst_cache 12636 12636 448 36 4 : tunables 0 0 0 : slabdata 351 351 0 xfrm_dst_cache 12636 12636 448 36 4 : tunables 0 0 0 : slabdata 351 351 0 xfrm_dst_cache 12636 12636 448 36 4 : tunables 0 0 0 : slabdata 351 351 0 xfrm_dst_cache 12636 12636 448 36 4 : tunables 0 0 0 : slabdata 351 351 0 xfrm_dst_cache 12708 12708 448 36 4 : tunables 0 0 0 : slabdata 353 353 0 xfrm_dst_cache 11529 12276 448 36 4 : tunables 0 0 0 : slabdata 341 341 0 xfrm_dst_cache 11599 12276 448 36 4 : tunables 0 0 0 : slabdata 341 341 0 xfrm_dst_cache 11599 12276 448 36 4 : tunables 0 0 0 : slabdata 341 341 0 xfrm_dst_cache 11599 12276 448 36 4 : tunables 0 0 0 : slabdata 341 341 0 xfrm_dst_cache 11599 12276 448 36 4 : tunables 0 0 0 : slabdata 341 341 0 xfrm_dst_cache 11599 12276 448 36 4 : tunables 0 0 0 : slabdata 341 341 0 xfrm_dst_cache 11599 12276 448 36 4 : tunables 0 0 0 : slabdata 341 341 0 xfrm_dst_cache 11599 12276 448 36 4 : tunables 0 0 0 : slabdata 341 341 0 xfrm_dst_cache 11599 12276 448 36 4 : tunables 0 0 0 : slabdata 341 341 0 xfrm_dst_cache 11599 12276 448 36 4 : tunables 0 0 0 : slabdata 341 341 0 xfrm_dst_cache 11599 12276 448 36 4 : tunables 0 0 0 : slabdata 341 341 0 xfrm_dst_cache 11633 12276 448 36 4 : tunables 0 0 0 : slabdata 341 341 0 xfrm_dst_cache 11633 12276 448 36 4 : tunables 0 0 0 : slabdata 341 341 0 xfrm_dst_cache 11633 12276 448 36 4 : tunables 0 0 0 : slabdata 341 341 0 xfrm_dst_cache 11700 12276 448 36 4 : tunables 0 0 0 : slabdata 341 341 0 xfrm_dst_cache 11763 12276 448 36 4 : tunables 0 0 0 : slabdata 341 341 0 xfrm_dst_cache 11798 12276 448 36 4 : tunables 0 0 0 : slabdata 341 341 0 xfrm_dst_cache 11964 12276 448 36 4 : tunables 0 0 0 : slabdata 341 341 0 xfrm_dst_cache 12139 12276 448 36 4 : tunables 0 0 0 : slabdata 341 341 0 xfrm_dst_cache 12244 12276 448 36 4 : tunables 0 0 0 : slabdata 341 341 0 xfrm_dst_cache 12312 12312 448 36 4 : tunables 0 0 0 : slabdata 342 342 0 xfrm_dst_cache 12492 12492 448 36 4 : tunables 0 0 0 : slabdata 347 347 0 Regards, -- Wolfgang Walter Studentenwerk München Anstalt des öffentlichen Rechts -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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