Am 31.08.2011 14:48, schrieb Ben Hutchings: > On Wed, 2011-08-31 at 14:36 +0200, Thorsten Giese wrote: >> Am 31.08.2011 14:09, schrieb Ben Hutchings: >>>> I think I found a performance issue in the kernel (2.6.32/amd64) of the >>>> squeeze release. >>>> >>>> I tested from different servers and each time made a wget of a 16 MB >>>> file from a remote co-location which is connected with gigabit (but the >>>> issue showed also on a 32MBit/s "dial-up" cable connection). >>>> >>>> The squeeze system starts the transfer significantly slower and takes >>>> longer to get faster over time (on a 2GB file the maximum was reached >>>> after 12 seconds). The lenny system reaches this maxium very fast so the >>>> overall time drops from 2.4s to 0.4s. It could be, this is related to >>>> changes in TCP/IP behaviour. I could not see this behaviour in the same >>>> subnet, it shows up, as soon as routing is involved in the connection. >>> [...] >>> >>> Which network driver are you using? >>> >>> Is there any packet loss? Run 'netstat -s | grep retransmited' to >>> check this. >> >> >> I checked and I am using the e1000e on all affected systems. I checked >> on a squeeze system with the r8169 driver and the problem seems not to >> appear there. > [...] > > We're about to update e1000e in stable to add hardware support, but it > may help with this problem as well. Can you test the appropriate > package from <http://people.debian.org/~benh/packages/>? (The changes > file contains checksums for all files and is signed by me.)
I installed your kernel an the problem persists. No luck here, sorry. When the server is powered up (e.g. for the new kernel, there is a short time, where it seems to work, but then after about 4-5 requests (2-3 minutes) it stops working correctly and shows the problems as described above. Thorsten -- ANW GmbH & Co. KG Holunderweg 2 66894 Bechhofen Telefon 06372 8033190 Telefax 06372 8033191 E-Mail [email protected] Internet www.anw.de Sitz der Gesellschaft/Registered Office: 66894 Bechhofen, AG Zweibrücken HRA 30241 Persönlich haftende Gesellschafterin/ Partner with unlimited liability: ANW Management GmbH, AG Zweibrücken HRB 30449 Geschäftsführung: Oliver Gab, Thorsten Giese USt-ID/VAT-ID: DE241553575 -- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". Trouble? Contact [email protected] Archive: http://lists.debian.org/[email protected]
