tcpdump mailing list archives
Re: Libpcap performance under VMWare guest OSes
From: "Mark Bednarczyk" <voytechs () yahoo com>
Date: Thu, 10 Dec 2009 21:57:26 -0500
ubuntu9-x86:~# uname -a Linux ubuntu9-x86 2.6.28-11-server #42-Ubuntu SMP Fri Apr 17 02:48:10 UTC 2009 i686 GNU/Linux ubuntu9-x86:~# tcpdump -h tcpdump version 3.9.8 libpcap version 1.0.0 deb5-x86:~# uname -a Linux deb5-x86 2.6.26-1-686 #1 SMP Sat Jan 10 18:29:31 UTC 2009 i686 GNU/Linux deb5-x86:~# tcpdump -h tcpdump version 3.9.8 libpcap version 0.9.8 And both of these "guest" OSes are running on old version of FedoraCore 8 using VMServer version 4: [root@b7 ~]# uname -a Linux b7 2.6.24.5-85.fc8 #1 SMP Sat Apr 19 12:39:34 EDT 2008 i686 i686 i386 GNU/Linux I also have a litany of the same type of OSes on a WinXP system where I use both VMWorkstation 6.5 (and VMPLayer if needed). I ran guest ubuntu1 on WinXP host and guest ubuntu2 on FC8 host. As to the NICs. The FC8 system is a rackmount 1U server, its one of the onboard ether cards: /var/log/messages: "Dec 10 21:03:43 b7 kernel: e1000: eth0: e1000_probe: Intel(R) PRO/1000 Network Connection" The WinXP uses "Intel(R) PRO/100 VE Network Connection" card (it's a HP retail system). Cheers, mark...
-----Original Message----- From: tcpdump-workers-owner () lists tcpdump org [mailto:tcpdump-workers-owner () lists tcpdump org] On Behalf Of Guy Harris Sent: Thursday, December 10, 2009 9:41 PM To: tcpdump-workers () lists tcpdump org Subject: Re: [tcpdump-workers] Libpcap performance under VMWare guest OSes On Dec 10, 2009, at 6:33 PM, Mark Bednarczyk wrote:The debian packages are: ubuntu9-x86:~# dpkg-query --show libpcap0.8 libpcap0.8 1.0.0-1I *suspect* that means that it's libpcap 1.0.0, which means that *if* the kernel supports the memory-mapped interface to PF_PACKET sockets, libpcap will use it, which might improve the capture performance. (Run "tcpdump -h" to find out the actual libpcap version number, and "uname -r" to get the kernel version number.) That's the OS running both as a native host and as a guest under Windows XP, right? What type of network adapters are being used on the host and the guest? In particular, what drivers are being used?deb5-x86:~# dpkg-query --show libpcap0.8 libpcap0.8 0.9.8-5And *that* probably means it's libpcap 0.9.8, which means that, unless the Debian folk added memory-mapped interface support, libpcap *won't* use the memory-mapped interface.- This is the tcpdump-workers list. Visit https://cod.sandelman.ca/ to unsubscribe.
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Current thread:
- Libpcap performance under VMWare guest OSes Mark Bednarczyk (Dec 10)
- Re: Libpcap performance under VMWare guest OSes Rick Jones (Dec 10)
- Re: Libpcap performance under VMWare guest OSes Mark Bednarczyk (Dec 10)
- Re: Libpcap performance under VMWare guest OSes Rick Jones (Dec 10)
- Re: Libpcap performance under VMWare guest OSes Guy Harris (Dec 10)
- Re: Libpcap performance under VMWare guest OSes Mark Bednarczyk (Dec 10)
- Re: Libpcap performance under VMWare guest OSes Guy Harris (Dec 10)
- Re: Libpcap performance under VMWare guest OSes Mark Bednarczyk (Dec 10)
- Re: Libpcap performance under VMWare guest OSes Mark Bednarczyk (Dec 10)
- Re: Libpcap performance under VMWare guest OSes Rick Jones (Dec 10)
- Re: Libpcap performance under VMWare guest OSes Mark Bednarczyk (Dec 10)