Date: Wed, 17 Feb 2016 10:43:17 +0530 From: Venkateswara Rao Dokku <dvrao.584@gmail.com> To: Juraj Bocinec <juraj.bocinec@lain.sk> Cc: freebsd-drivers@freebsd.org, owner-freebsd-drivers@freebsd.org, freebsd-cloud@freebsd.org Subject: Re: SCP issue on FreeBSD Message-ID: <CACiOAOAiEkxh_Q2Z3EVDfkkbzHn3jdPY-3RMAyDnwkX8uo0R6Q@mail.gmail.com> In-Reply-To: <CACiOAOBZW_CYUxK3k_MUZhU=Om%2BUBHCKRT%2Bin8yOW=FHBYb7pw@mail.gmail.com> References: <CACiOAODLd3=K6qsEE__=QaZQmvQZ_i8-4mOsR3FzM5BzzQRC_A@mail.gmail.com> <686449bd2840e86a391cc6f4771c3403@mam.nameserver.sk> <CACiOAOANQhLhKHvnouSFO=oACaKe=qTU2rRd1y3GCQmVuNZd4Q@mail.gmail.com> <CACiOAOBZW_CYUxK3k_MUZhU=Om%2BUBHCKRT%2Bin8yOW=FHBYb7pw@mail.gmail.com>
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This beahavior is only seen on the FreeBSD guest which is running on KVM. When we run the same guest on Xen, ESX hypervisors the issue is not seen. Is there any issue with FreeBSD + VirtIO combined? Any help is much appreciated. On Tue, Feb 16, 2016 at 10:13 AM, Venkateswara Rao Dokku < dvrao.584@gmail.com> wrote: > root@test:~ # sysctl -a | grep send > kern.cam.ada.send_ordered: 1 > kern.cam.da.send_ordered: 1 > net.local.stream.sendspace: 8192 > net.inet.ip.sendsourcequench: 0 > net.inet.igmp.sendlocal: 1 > net.inet.igmp.sendra: 1 > net.inet.tcp.sendspace: 65536 > net.inet.tcp.sendbuf_max: 262144 > net.inet.tcp.sendbuf_inc: 16384 > net.inet.tcp.sendbuf_auto: 1 > net.inet.sctp.sendspace: 233016 > net.raw.sendspace: 8192 > root@test:~ # sysctl -a | grep recv > net.local.stream.recvspace: 8192 > net.local.dgram.recvspace: 4096 > net.inet.igmp.recvifkludge: 1 > net.inet.tcp.recvspace: 65536 > net.inet.tcp.recvbuf_max: 262144 > net.inet.tcp.recvbuf_inc: 16384 > net.inet.tcp.recvbuf_auto: 1 > net.inet.udp.recvspace: 42080 > net.inet.sctp.recvspace: 233016 > net.inet.raw.recvspace: 9216 > net.raw.recvspace: 8192 > net.wlan.recv_bar: 1 > hw.cs.recv_delay: 570 > > On Tue, Feb 16, 2016 at 10:13 AM, Venkateswara Rao Dokku < > dvrao.584@gmail.com> wrote: > >> I dont think that is causing the problem. >> I have the send/receive buffers equal on my system. >> >> >> On Wed, Feb 10, 2016 at 12:41 AM, Juraj Bocinec <juraj.bocinec@lain.sk> >> wrote: >> >>> Greetings, i'm no expert but doesn't this have to do something with >>> network send/receive buffers? They're not set the same by default: >>> >>> [root@schizo /etc]# sysctl -a|grep send >>> kern.cam.ada.ada_send_ordered: 1 >>> kern.cam.da.da_send_ordered: 1 >>> net.local.stream.sendspace: 8192 >>> net.inet.ip.sendsourcequench: 0 >>> net.inet.igmp.sendlocal: 1 >>> net.inet.igmp.sendra: 1 >>> net.inet.tcp.sendspace: 32768 >>> net.inet.tcp.sendbuf_max: 262144 >>> net.inet.tcp.sendbuf_inc: 8192 >>> net.inet.tcp.sendbuf_auto: 1 >>> net.inet.sctp.sendspace: 233016 >>> net.raw.sendspace: 8192 >>> [root@schizo /etc]# sysctl -a|grep recv >>> net.local.stream.recvspace: 8192 >>> net.local.dgram.recvspace: 4096 >>> net.inet.igmp.recvifkludge: 1 >>> net.inet.tcp.recvspace: 65536 >>> net.inet.tcp.recvbuf_max: 262144 >>> net.inet.tcp.recvbuf_inc: 16384 >>> net.inet.tcp.recvbuf_auto: 1 >>> net.inet.udp.recvspace: 42080 >>> net.inet.sctp.recvspace: 233016 >>> net.inet.raw.recvspace: 9216 >>> net.raw.recvspace: 8192 >>> >>> Juraj Bocinec >>> >>> On 2016-02-09 05:39, Venkateswara Rao Dokku wrote: >>> >>>> Hi, >>>> >>>> I am using FreeBSD 8.4 as guest on top of the linux (ubuntu 14.10) >>>> host. I >>>> observed that, the Pushing a file from FreeBSD is giving good >>>> performance >>>> over Puling a file from other linux box to FreeBSD. >>>> >>>> root@test:~ # *scp ns-10.5-57.7.gz root@10.102.38.202:/root* >>>> root@10.102.38.202's password: >>>> ns-10.5-57.7.gz >>>> 100% >>>> 126MB *63.0MB/s* 00:02 >>>> root@test:~ #* scp root@10.102.38.202:/root/ns-10.5-57.7.gz* . >>>> root@10.102.38.202's password: >>>> ns-10.5-57.7.gz >>>> 100% >>>> 126MB *11.5MB/s* 00:11 >>>> >>>> Why there is a difference between these two?. Any tuning needs to be >>>> done >>>> on the FreeBSD guest to get these two almost same? >>>> >>>> To see, whether its specific to FreeBSD I did the same experiment with >>>> Linux(Ubuntu 14.10) as guest on top of Linux(same host as above). Here >>>> the >>>> output is almost same. >>>> >>>> root@ubuntu:~# *scp root@10.102.38.202:/root/ns-11.1-14.4.gz .* >>>> root@10.102.38.202's password: >>>> ns-11.1-14.4.gz >>>> 100% >>>> 130MB *64.8MB/s* 00:02 >>>> root@ubuntu:~# *scp ns-11.1-14.4.gz root@10.102.38.202:/roo*t >>>> root@10.102.38.202's password: >>>> ns-11.1-14.4.gz >>>> 100% 130MB *64.8MB/s* 00:02 >>>> >>>> >>>> Moreover, in most cases Linux performance is better than FreeBSD. Is >>>> Ubuntu >>>> gives good performance when compared to FreeBSD? >>>> >>>> Any help is much appreciated. >>>> Thanks. >>>> >>> >>> >> >> >> -- >> Thanks & Regards, >> Venkateswara Rao Dokku. >> >> > > > -- > Thanks & Regards, > Venkateswara Rao Dokku. > > -- Thanks & Regards, Venkateswara Rao Dokku.
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