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[EP-tech] Re: Error "Apache2 IO write: (103)"

Hi Florian,

I'll test your patch.

Thanks guys,

Cristian


On Mon, Mar 31, 2014 at 11:30 AM, Florian Heß <hess@ub.uni-heidelberg.de> wrote:
> Am 22.03.2014 16:13, schrieb Centro de Documentación:
>
>> Hi guys,
>>
>> I've noticed lots of "Apache2 IO write: (103) Software caused
>> connection abort" messages appearing in our apache log. I'm worried
>> because there are a lot of them. I think it's something unusual.
>>
>> Can something force eprints to stop a file retrieval? I mean something
>> strange that could cause it.
>>
>> Is there a relationship between those messages and errors 500?
>>
>> I'm running EPrints 3.3.10, Apache 2.2.22, mod_perl/2.0.7
>>
>
> Hi,
>
> my patch - thanks to Sebastien, we mailed about this (or maybe a related?)
> issue last year - does not eliminate the "Software caused ..." events, just
> checked the logs, but there should be fewer chances for user agents to make
> massively parallel requests since this is explicitly demotivated by header
> Accept-Ranges: none. Look if it reduces those errors at least. EPrints
> should not deliver big pdf files in parallel chunks as the system will
> likely read the whole file into memory. I am not quite optimistic about
> Webserver processes able to share a file in cache.
>
> In EPrints/Apache/Storage.pm, line 183ff, change
>         EPrints::Apache::AnApache::header_out(
>                 $r,
>                 "Accept-Ranges" => "none" # was "bytes"
>         );
>
> Caution: Any streamed A/V media might cease to work because of it.
>
> I think that a certain share of aborted request come from search bots.
>
> May it work for you nonetheless :-), would like to know if there is a
> significant change in the ratio of "Software caused" events by all error
> lines.
>
> Florian
>
>> Regards,
>>
>> Cristian
>>
>> /////////////////////////////////////////////
>>
>> Error in file retrieval: :Apache2 IO write: (103) Software caused
>> connection abort at
>> /usr/share/eprints3/perl_lib/EPrints/Apache/Storage.pm line 207
>> ------------------------------------------------------------------
>>   at /usr/share/eprints3/perl_lib/EPrints/Apache/Storage.pm line 267
>>
>> EPrints::Apache::Storage::handler('Apache2::RequestRec=SCALAR(0x7fa7d9657610)')
>> called at -e line 0
>>      eval {...} called at -e line 0
>> ------------------------------------------------------------------
>> ---------------- EPrints System Error ----------------------------
>> ------------------------------------------------------------------
>> Error in file retrieval: :Apache2 IO write: (103) Software caused
>> connection abort at
>> /usr/share/eprints3/perl_lib/EPrints/Apache/Storage.pm line 207
>> ------------------------------------------------------------------
>>   at /usr/share/eprints3/perl_lib/EPrints/Apache/Storage.pm line 267
>>
>> EPrints::Apache::Storage::handler('Apache2::RequestRec=SCALAR(0x7fa7dc4eab28)')
>> called at -e line 0
>>      eval {...} called at -e line 0
>> ------------------------------------------------------------------
>> ---------------- EPrints System Error ----------------------------
>> ------------------------------------------------------------------
>> Error in file retrieval: :Apache2 IO write: (103) Software caused
>> connection abort at
>> /usr/share/eprints3/perl_lib/EPrints/Apache/Storage.pm line 207
>> ------------------------------------------------------------------
>>   at /usr/share/eprints3/perl_lib/EPrints/Apache/Storage.pm line 267
>>
>> EPrints::Apache::Storage::handler('Apache2::RequestRec=SCALAR(0x7fa7dc4e8f60)')
>> called at -e line 0
>>      eval {...} called at -e line 0
>> ------------------------------------------------------------------
>> ---------------- EPrints System Error ----------------------------
>> ------------------------------------------------------------------
>> Error in file retrieval: :Apache2 IO write: (103) Software caused
>> connection abort at
>> /usr/share/eprints3/perl_lib/EPrints/Apache/Storage.pm line 207
>> ------------------------------------------------------------------
>>   at /usr/share/eprints3/perl_lib/EPrints/Apache/Storage.pm line 267
>>
>> EPrints::Apache::Storage::handler('Apache2::RequestRec=SCALAR(0x7fa7dc4e8c30)')
>> called at -e line 0
>>      eval {...} called at -e line 0
>> ------------------------------------------------------------------
>> ---------------- EPrints System Error ----------------------------
>> ------------------------------------------------------------------
>> Error in file retrieval: :Apache2 IO write: (103) Software caused
>> connection abort at
>> /usr/share/eprints3/perl_lib/EPrints/Apache/Storage.pm line 207
>> ------------------------------------------------------------------
>>   at /usr/share/eprints3/perl_lib/EPrints/Apache/Storage.pm line 267
>>
>> EPrints::Apache::Storage::handler('Apache2::RequestRec=SCALAR(0x7fa7dc4e4648)')
>> called at -e line 0
>>      eval {...} called at -e line 0
>> ------------------------------------------------------------------
>> ---------------- EPrints System Error ----------------------------
>> ------------------------------------------------------------------
>> Error in file retrieval: :Apache2 IO write: (103) Software caused
>> connection abort at
>> /usr/share/eprints3/perl_lib/EPrints/Apache/Storage.pm line 207
>> ------------------------------------------------------------------
>>   at /usr/share/eprints3/perl_lib/EPrints/Apache/Storage.pm line 267
>>
>> EPrints::Apache::Storage::handler('Apache2::RequestRec=SCALAR(0x7fa7db885738)')
>> called at -e line 0
>>      eval {...} called at -e line 0
>> ------------------------------------------------------------------
>> ---------------- EPrints System Error ----------------------------
>> ------------------------------------------------------------------
>> Error in file retrieval: :Apache2 IO write: (103) Software caused
>> connection abort at
>> /usr/share/eprints3/perl_lib/EPrints/Apache/Storage.pm line 207
>> ------------------------------------------------------------------
>>   at /usr/share/eprints3/perl_lib/EPrints/Apache/Storage.pm line 267
>>
>> EPrints::Apache::Storage::handler('Apache2::RequestRec=SCALAR(0x7fa7dc4e8c30)')
>> called at -e line 0
>>      eval {...} called at -e line 0
>> ------------------------------------------------------------------
>> ---------------- EPrints System Error ----------------------------
>> ------------------------------------------------------------------
>> Error in file retrieval: :Apache2 IO write: (103) Software caused
>> connection abort at
>> /usr/share/eprints3/perl_lib/EPrints/Apache/Storage.pm line 207
>> ------------------------------------------------------------------
>>   at /usr/share/eprints3/perl_lib/EPrints/Apache/Storage.pm line 267
>>
>> EPrints::Apache::Storage::handler('Apache2::RequestRec=SCALAR(0x7fa7dc4f5a38)')
>> called at -e line 0
>>      eval {...} called at -e line 0
>> ------------------------------------------------------------------
>> ---------------- EPrints System Error ----------------------------
>> ------------------------------------------------------------------
>> Error in file retrieval: :Apache2 IO write: (103) Software caused
>> connection abort at
>> /usr/share/eprints3/perl_lib/EPrints/Apache/Storage.pm line 207
>> ------------------------------------------------------------------
>>   at /usr/share/eprints3/perl_lib/EPrints/Apache/Storage.pm line 267
>>
>> EPrints::Apache::Storage::handler('Apache2::RequestRec=SCALAR(0x7fa7dc4dd140)')
>> called at -e line 0
>>      eval {...} called at -e line 0
>> ------------------------------------------------------------------
>> ---------------- EPrints System Error ----------------------------
>> ------------------------------------------------------------------
>> Error in file retrieval: :Apache2 IO write: (103) Software caused
>> connection abort at
>> /usr/share/eprints3/perl_lib/EPrints/Apache/Storage.pm line 207
>> ------------------------------------------------------------------
>>   at /usr/share/eprints3/perl_lib/EPrints/Apache/Storage.pm line 267
>>
>> EPrints::Apache::Storage::handler('Apache2::RequestRec=SCALAR(0x7fa7dc4ec058)')
>> called at -e line 0
>>      eval {...} called at -e line 0
>> ------------------------------------------------------------------
>> ---------------- EPrints System Error ----------------------------
>> ------------------------------------------------------------------
>> Error in file retrieval: :Apache2 IO write: (103) Software caused
>> connection abort at
>> /usr/share/eprints3/perl_lib/EPrints/Apache/Storage.pm line 207
>> ------------------------------------------------------------------
>>   at /usr/share/eprints3/perl_lib/EPrints/Apache/Storage.pm line 267
>>
>> EPrints::Apache::Storage::handler('Apache2::RequestRec=SCALAR(0x7fa7d9657610)')
>> called at -e line 0
>>      eval {...} called at -e line 0
>> ------------------------------------------------------------------
>> ---------------- EPrints System Error ----------------------------
>> ------------------------------------------------------------------
>> Error in file retrieval: :Apache2 IO write: (103) Software caused
>> connection abort at
>> /usr/share/eprints3/perl_lib/EPrints/Apache/Storage.pm line 207
>> ------------------------------------------------------------------
>>   at /usr/share/eprints3/perl_lib/EPrints/Apache/Storage.pm line 267
>>
>> EPrints::Apache::Storage::handler('Apache2::RequestRec=SCALAR(0x7fa7d9657610)')
>> called at -e line 0
>>      eval {...} called at -e line 0
>> ------------------------------------------------------------------
>> ---------------- EPrints System Error ----------------------------
>> ------------------------------------------------------------------
>> Error in file retrieval: :Apache2 IO write: (103) Software caused
>> connection abort at
>> /usr/share/eprints3/perl_lib/EPrints/Apache/Storage.pm line 207
>> ------------------------------------------------------------------
>>   at /usr/share/eprints3/perl_lib/EPrints/Apache/Storage.pm line 267
>>
>> EPrints::Apache::Storage::handler('Apache2::RequestRec=SCALAR(0x7fa7db853200)')
>> called at -e line 0
>>      eval {...} called at -e line 0
>> ------------------------------------------------------------------
>> ---------------- EPrints System Error ----------------------------
>> ------------------------------------------------------------------
>> Error in file retrieval: :Apache2 IO write: (103) Software caused
>> connection abort at
>> /usr/share/eprints3/perl_lib/EPrints/Apache/Storage.pm line 258
>> ------------------------------------------------------------------
>>   at /usr/share/eprints3/perl_lib/EPrints/Apache/Storage.pm line 267
>>
>> EPrints::Apache::Storage::handler('Apache2::RequestRec=SCALAR(0x7fa7dc4e7708)')
>> called at -e line 0
>>      eval {...} called at -e line 0
>> ------------------------------------------------------------------
>> ---------------- EPrints System Error ----------------------------
>> ------------------------------------------------------------------
>> Error in file retrieval: :Apache2 IO write: (103) Software caused
>> connection abort at
>> /usr/share/eprints3/perl_lib/EPrints/Apache/Storage.pm line 207
>> ------------------------------------------------------------------
>>   at /usr/share/eprints3/perl_lib/EPrints/Apache/Storage.pm line 267
>>
>> EPrints::Apache::Storage::handler('Apache2::RequestRec=SCALAR(0x7fa7db889d80)')
>> called at -e line 0
>>      eval {...} called at -e line 0
>> ------------------------------------------------------------------
>> ---------------- EPrints System Error ----------------------------
>> ------------------------------------------------------------------
>> Error in file retrieval: :Apache2 IO write: (103) Software caused
>> connection abort at
>> /usr/share/eprints3/perl_lib/EPrints/Apache/Storage.pm line 258
>> ------------------------------------------------------------------
>>   at /usr/share/eprints3/perl_lib/EPrints/Apache/Storage.pm line 267
>>
>> EPrints::Apache::Storage::handler('Apache2::RequestRec=SCALAR(0x7fa7dc4e9a58)')
>> called at -e line 0
>>      eval {...} called at -e line 0
>> ------------------------------------------------------------------
>> ---------------- EPrints System Error ----------------------------
>> ------------------------------------------------------------------
>> Error in file retrieval: :Apache2 IO write: (103) Software caused
>> connection abort at
>> /usr/share/eprints3/perl_lib/EPrints/Apache/Storage.pm line 258
>> ------------------------------------------------------------------
>>   at /usr/share/eprints3/perl_lib/EPrints/Apache/Storage.pm line 267
>>
>> EPrints::Apache::Storage::handler('Apache2::RequestRec=SCALAR(0x7fa7dc4e8fd8)')
>> called at -e line 0
>>      eval {...} called at -e line 0
>> ------------------------------------------------------------------
>> ---------------- EPrints System Error ----------------------------
>> ------------------------------------------------------------------
>> Error in file retrieval: :Apache2 IO write: (103) Software caused
>> connection abort at
>> /usr/share/eprints3/perl_lib/EPrints/Apache/Storage.pm line 258
>> ------------------------------------------------------------------
>>   at /usr/share/eprints3/perl_lib/EPrints/Apache/Storage.pm line 267
>>
>> EPrints::Apache::Storage::handler('Apache2::RequestRec=SCALAR(0x7fa7db88c388)')
>> called at -e line 0
>>      eval {...} called at -e line 0
>> ------------------------------------------------------------------
>> ---------------- EPrints System Error ----------------------------
>> ------------------------------------------------------------------
>> Error in file retrieval: :Apache2 IO write: (103) Software caused
>> connection abort at
>> /usr/share/eprints3/perl_lib/EPrints/Apache/Storage.pm line 258
>> ------------------------------------------------------------------
>>   at /usr/share/eprints3/perl_lib/EPrints/Apache/Storage.pm line 267
>>
>> EPrints::Apache::Storage::handler('Apache2::RequestRec=SCALAR(0x7fa7db84bc40)')
>> called at -e line 0
>>      eval {...} called at -e line 0
>> ------------------------------------------------------------------
>> ---------------- EPrints System Error ----------------------------
>> ------------------------------------------------------------------
>> Error in file retrieval: :Apache2 IO write: (103) Software caused
>> connection abort at
>> /usr/share/eprints3/perl_lib/EPrints/Apache/Storage.pm line 258
>> ------------------------------------------------------------------
>>   at /usr/share/eprints3/perl_lib/EPrints/Apache/Storage.pm line 267
>>
>> EPrints::Apache::Storage::handler('Apache2::RequestRec=SCALAR(0x7fa7dc4f1d48)')
>> called at -e line 0
>>      eval {...} called at -e line 0
>> ------------------------------------------------------------------
>> ---------------- EPrints System Error ----------------------------
>> ------------------------------------------------------------------
>> Error in file retrieval: :Apache2 IO write: (103) Software caused
>> connection abort at
>> /usr/share/eprints3/perl_lib/EPrints/Apache/Storage.pm line 207
>> ------------------------------------------------------------------
>>   at /usr/share/eprints3/perl_lib/EPrints/Apache/Storage.pm line 267
>>
>> EPrints::Apache::Storage::handler('Apache2::RequestRec=SCALAR(0x7fa7db891e78)')
>> called at -e line 0
>>      eval {...} called at -e line 0
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>>
>
>
> --
> UB Heidelberg (Altstadt)
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> Abt. Informationstechnik
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>
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