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FreeBSD 8.0 Network Performance
Hey All,
I just installed FreeBSD 8.0 on my home server and I noticed that since the install I have had reduced network performance. Before I did the move, I ran a ttcp test and then redid it after. Both installations were the same, same software and hardware and these are the results I got: FreeBSD 7.2: 504.41 KB/s FreeBSD 8.0: 273.17 KB/s I have noticed that if I start streaming alot (Which worked fine on 7.2), the internet connection stalls. Its baffling me. I have talked to some of my IT Admin friends who have upgraded to FreeBSD 8.0 and in all cases they have noticed the exact same slowdown, but to varing degrees (One of my friends who runs a gigabit network was getting around 40 MB/s before and after was only getting around 20 MB/s so the performance decreate was by 50% ). Has anyone else noticed this? Is there anything I can do to fix it or should I revert back to 7.2? Note: When I reinstalled, I whiped the drive clean and reinstalled. I didnt use CVS to update it. Thanks, Karl |
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Set these by sysctl(8) and try again your test:
Code:
net.isr.direct=0 kern.random.sys.harvest.ethernet=0 kern.random.sys.harvest.interrupt=0 http://freebsd.org/send-pr.html
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religions, worst damnation of mankind "If 386BSD had been available when I started on Linux, Linux would probably never had happened." Linus Torvalds Linux is not UNIX! Face it! It is not an insult. It is fact: GNU is a recursive acronym for “GNU's Not UNIX”. vermaden's: links resources deviantart spreadbsd |
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I made the changes, but it didnt seem to work. Infact it seemed to make the network stack unstable. It worked for about 5 minutes (My network speed went clsose to normal) but then it dropped down to a new now of 82 KB/s.
Decided to disable the sysctls, and these were the results: 3846.05 KB/sec 5080.51 KB/sec 82.51 KB/sec This is with no network traffic asside from the test. I lodged a bug report with the dev's, hopefully it will be fixed soon Thanks, Karl |
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@khakkinen
I remember, that these setting helped some users, but you should send the BUG imho.
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religions, worst damnation of mankind "If 386BSD had been available when I started on Linux, Linux would probably never had happened." Linus Torvalds Linux is not UNIX! Face it! It is not an insult. It is fact: GNU is a recursive acronym for “GNU's Not UNIX”. vermaden's: links resources deviantart spreadbsd |
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Sorry, I did to a BUG report using the form you sent me to Been a long day :P
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I can't say about the rest of the world, but the only slow downs I've noticed with FreeBSD 8.0, is www/firefox35 stalls a lot more often :-P. Network performance over my ath wireless card has been perfect.
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My Journal Thou shalt check the array bounds of all strings (indeed, all arrays), for surely where thou typest ``foo'' someone someday shall type ``supercalifragilisticexpialidocious''. |
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I also see stalls in Firefox and video playback - mplayer a lot, vlc less, but still some. I am going to refresh all KDE4 settings which are somewhat broken and see if it makes any difference.
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I might actually retract my results above.
The VM's I was running the tests on were ones I'd set up under VMware ESXi 3.5 update4. That version of VMware does not have any pre-sets for FreeBSD. Today, I rebuilt my FreeBSD 8.0 VM from scratch, under VMware ESXi 4 Update 1. This time using the FreeBSD (64-bit) pre-set that's now available. My results are currently averaging the following: FreeBSD 8.0 built under ESXi 4
Apologies if this is now distracting for the topic, I just wanted to clear that up. |
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Quote:
Maybe this is a solution for your problem ...
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use UNIX or die :-) |
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Considering that I have browser.sessionstore.resume_from_crash disabled (false), I would hope to GOD that Mozilla doesn't save the session data every browser.sessionstore.interval....... because if it still saves it under those conditions, we're taking hopeless levels of brain damage here.
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My Journal Thou shalt check the array bounds of all strings (indeed, all arrays), for surely where thou typest ``foo'' someone someday shall type ``supercalifragilisticexpialidocious''. |
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