Messages in this thread | | | Date | Wed, 16 Jul 2008 08:38:52 -0500 | Subject | Re: sendfile() broken with 2.6.26 + Apache 2 ? | From | "J. K. Cliburn" <> |
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Eric Dumazet wrote: > Ian Jeffray a écrit : >> Hi Eric, >> >> Thanks for directing me to a better list. >> >> Further responses below: >> >> Eric Dumazet wrote: >>> CC to netdev where this report might find better answers >>> >>> Ian Jeffray a écrit : >>>> All, >>>> >>>> I moved from kernel 2.6.25.4 to 2.6.26 yesterday and observed that >>>> large files sent via Apache2 are partially corrupt. >>>> >>>> This appears to be linked to sendfile() -- disabling the use of >>>> sendfile in the apache config (EnableSendfile Off) allows it to >>>> function as normal.
>>> >>> >>> What kind of network adapter are you using ? (lspci | grep -i ether) >> >> 02:00.0 Ethernet controller: Attansic Technology Corp. L1 Gigabit >> Ethernet Adapter (rev b0) >> >> >>> If you disable TCP segmentation offload on this NIC (ethtool -K eth0 >>> tso off) , is this problem still present ? >> >> Wow. That 'solves' the problem! Great. >> >> Does this therefore point to an attansic driver issue? >> > > > Yes, maybe related to commit 9d90fb1ac9d97da86e24d9ea947bf2a2f333829a > In this patch, Jay Cliburn enabled TSO by default for atl1 driver. > > This might be a driver problem, or a generic sendfile() problem, I dont > know...
I'm currently traveling and unable to delve into this issue and its relation to the atl1 driver. I should be able to look at it this weekend when I get back home.
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