From: Petr Vorel <pvorel@suse.cz>
To: Yang Xu <xuyang2018.jy@fujitsu.com>
Cc: ltp@lists.linux.it
Subject: Re: [LTP] [PATCH v5 4/4] zram/zram01.sh: replacing data stored in this disk with allocated for this disk
Date: Mon, 20 Dec 2021 11:49:28 +0100 [thread overview]
Message-ID: <YcBfuCPg1ENZHvud@pevik> (raw)
In-Reply-To: <1639983142-2247-4-git-send-email-xuyang2018.jy@fujitsu.com>
> Before ltp commit 4372f7a2156 ("Fix compression ratio calculation in zram01")[1], we
nit: we can drop [1]
> used free -m changes to calculate the compression ratio.
> After the above patch, we used compr_data_size to calculate. kernel documentation[2] has
nit: I'd add link to the doc also in this commit message.
Kind regards,
Petr
> the following info:
> orig_data_size: uncompressed size of data stored in this disk.
> compr_data_size: compressed size of data stored in this disk
> mem_used_total: the amount of memory allocated for this disk
> We should calculate the compression ratio by used disk size divided into used mem size.
> It can also avoid the situation that division by 0 as below:
> zram01 7 TINFO: filling zram4 (it can take long time)
> zram01 7 TPASS: zram4 was filled with '25568' KB
> zram01 7 TINFO: compr_size 0
> /opt/ltp/testcases/bin/zram01.sh: line 131: 100 * 1024 * 25568 / 0: division by 0 (error token is "0")
> Reviewed-by: Petr Vorel <pvorel@suse.cz>
> Signed-off-by: Yang Xu <xuyang2018.jy@fujitsu.com>
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next prev parent reply other threads:[~2021-12-20 10:49 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-20 6:52 [LTP] [PATCH v5 1/4] swapping01: skip test if zram-swap is being used Yang Xu
2021-12-20 6:52 ` [LTP] [PATCH v5 2/4] zram/zram_lib.sh: adapt the situation that zram device " Yang Xu
2021-12-20 10:45 ` Petr Vorel
2021-12-21 1:33 ` xuyang2018.jy
2021-12-20 6:52 ` [LTP] [PATCH v5 3/4] zram/zram03: Convert into new api Yang Xu
2021-12-20 6:52 ` [LTP] [PATCH v5 4/4] zram/zram01.sh: replacing data stored in this disk with allocated for this disk Yang Xu
2021-12-20 10:49 ` Petr Vorel [this message]
2021-12-21 2:18 ` xuyang2018.jy
2021-12-21 8:41 ` Petr Vorel
2021-12-22 9:33 ` xuyang2018.jy
2021-12-22 14:12 ` Petr Vorel
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