From: Nikolay Borisov <kernel@kyup.com>
To: kexec@lists.infradead.org
Cc: SiteGround Operations <operations@siteground.com>
Subject: Reducing the size of the dump file/speeding up collection
Date: Wed, 16 Sep 2015 11:30:41 +0300 [thread overview]
Message-ID: <55F928B1.4080703@kyup.com> (raw)
Hello,
I've been using makedumpfile as the crash collector with the -d31
parameter. The machine this is being run on usually have 128-256GB of
ram and the resulting crash dumps are in the range of 14-20gb which is
very bug for the type of analysis I'm usually performing on crashed
machine. I was wondering whether there is a way to further reduce the
size and the time to take the dump (now it takes around 25 minutes to
collect such a dump). I've seen reports where people with TBs of ram
take that long, meaning for a machine with 256gb it should be even
faster. I've been running this configuration on kernels 3.12.28 and 4.1
where mmap for the vmcore file is supported.
Please advise
Regards,
Nikolay
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next reply other threads:[~2015-09-16 8:31 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-16 8:30 Nikolay Borisov [this message]
2015-09-17 3:27 ` Reducing the size of the dump file/speeding up collection qiaonuohan
2015-09-17 6:32 ` Nikolay Borisov
2015-09-17 7:08 ` Nikolay Borisov
2015-09-18 2:38 ` qiaonuohan
2015-09-18 12:45 ` Nikolay Borisov
2015-09-21 6:27 ` qiaonuohan
2015-09-23 1:44 ` Baoquan He
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