Re: Reducing HDD writing affect on whole system.
Thank You for Your time and answer, Camaleón:
>> I have terrible delays/freezes w/ any application whenever HDD (a
>> SATA one) does its writing.
>
>That should not happen at all.
Agree, but...
>Consider running a smartctl test on the disk, it can be dying or
>having a severe hardware problem.
I have run this way:
smartctl --test=short /dev/sda
in 2 minutes it completed and in its log (-l selftest /dev/sda) I saw
its report stating that everything is OK that is no errors found. Seems
to me it makes not speed tests but whither an HDD alive, I tried to
take long test but it seems to do the same thing just hard way and not
performance test...
Or I have done something wrong? - I'm new to the utility though.
>> My question is, Whether I can make any adjustments as to FS mount
>> options, kernel parameters, etc?
>>
>> The idea is, If it works extremely slow - to reduce its (the writing
>> process or whatever related to it) priority or whatever - so it
>> affect not the OS almost at all - though the writing will continue
>> forever.
>
>I think you should first find out what makes this (freezes and
>slowness) happens because if you're facing a hardware related issue,
>there will be no improvements in tweaking the filesystem mount
>options, sooner or later your disk will fail and you will only delay
>its agony.
Well it is my long experience (about 7 years already) w/ SATA HDDs that
to me it works slower (on Linux) than the PATA ones - I understand it
sounds very weird, but so it is. Long time ago I have seen for example
- the SATA HDD w/ less capacity was fsck-ed much longer than PATA one
w/ having more capacity - of course there was not heard of / used ext4
at all, ext3 - was the highest version of the FS. And so on. Till
this very day I suppose the culprit is the hardware drivers in the
kernel or wherever - if it is not so - I mean that a lot of people
have high writing/reading speeds of SATAs then I have something to do
w/ my configurations :) though I do not have a glue.
Having said that I'm not looking for finding a bottle neck w/ the
discs, but rather reduce its effect that it has on my systems - at
least this is the point that I had when I started the thread.
Yet if I'm wrong, and the devices can produce high performance in
Linux / Debian, then I would find the problem rather than lowing
writing process priority, etc. In this case would You help to
investigate the problem? I supply any info relating the matter.
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