From: Nitin Gupta <ngupta@vflare.org> To: Pekka Enberg <penberg@cs.helsinki.fi>, Minchan Kim <minchan.kim@gmail.com>, Andrew Morton <akpm@linux-foundation.org>, Greg KH <greg@kroah.com> Cc: Linux Driver Project <devel@driverdev.osuosl.org>, linux-mm <linux-mm@kvack.org>, linux-kernel <linux-kernel@vger.kernel.org> Subject: [PATCH 10/10] Document sysfs entries Date: Mon, 9 Aug 2010 22:56:56 +0530 [thread overview] Message-ID: <1281374816-904-11-git-send-email-ngupta@vflare.org> (raw) In-Reply-To: <1281374816-904-1-git-send-email-ngupta@vflare.org> Signed-off-by: Nitin Gupta <ngupta@vflare.org> --- Documentation/ABI/testing/sysfs-block-zram | 99 ++++++++++++++++++++++++++++ 1 files changed, 99 insertions(+), 0 deletions(-) create mode 100644 Documentation/ABI/testing/sysfs-block-zram diff --git a/Documentation/ABI/testing/sysfs-block-zram b/Documentation/ABI/testing/sysfs-block-zram new file mode 100644 index 0000000..c8b3b48 --- /dev/null +++ b/Documentation/ABI/testing/sysfs-block-zram @@ -0,0 +1,99 @@ +What: /sys/block/zram<id>/disksize +Date: August 2010 +Contact: Nitin Gupta <ngupta@vflare.org> +Description: + The disksize file is read-write and specifies the disk size + which represents the limit on the *uncompressed* worth of data + that can be stored in this disk. + +What: /sys/block/zram<id>/initstate +Date: August 2010 +Contact: Nitin Gupta <ngupta@vflare.org> +Description: + The disksize file is read-only and shows the initialization + state of the device. + +What: /sys/block/zram<id>/reset +Date: August 2010 +Contact: Nitin Gupta <ngupta@vflare.org> +Description: + The disksize file is write-only and allows resetting the + device. The reset operation frees all the memory assocaited + with this device. + +What: /sys/block/zram<id>/num_reads +Date: August 2010 +Contact: Nitin Gupta <ngupta@vflare.org> +Description: + The num_reads file is read-only and specifies the number of + reads (failed or successful) done on this device. + +What: /sys/block/zram<id>/num_writes +Date: August 2010 +Contact: Nitin Gupta <ngupta@vflare.org> +Description: + The num_writes file is read-only and specifies the number of + writes (failed or successful) done on this device. + +What: /sys/block/zram<id>/invalid_io +Date: August 2010 +Contact: Nitin Gupta <ngupta@vflare.org> +Description: + The invalid_io file is read-only and specifies the number of + non-page-size-aligned I/O requests issued to this device. + +What: /sys/block/zram<id>/notify_free +Date: August 2010 +Contact: Nitin Gupta <ngupta@vflare.org> +Description: + The notify_free file is read-only and specifies the number of + swap slot free notifications received by this device. These + notifications are send to a swap block device when a swap slot + is freed. This statistic is applicable only when this disk is + being used as a swap disk. + +What: /sys/block/zram<id>/discard +Date: August 2010 +Contact: Nitin Gupta <ngupta@vflare.org> +Description: + The discard file is read-only and specifies the number of + discard requests received by this device. These requests + provide information to block device regarding blocks which are + no longer used by filesystem. + +What: /sys/block/zram<id>/zero_pages +Date: August 2010 +Contact: Nitin Gupta <ngupta@vflare.org> +Description: + The zero_pages file is read-only and specifies number of zero + filled pages written to this disk. No memory is allocated for + such pages. + +What: /sys/block/zram<id>/orig_data_size +Date: August 2010 +Contact: Nitin Gupta <ngupta@vflare.org> +Description: + The orig_data_size file is read-only and specifies uncompressed + size of data stored in this disk. This excludes zero-filled + pages (zero_pages) since no memory is allocated for them. + Unit: bytes + +What: /sys/block/zram<id>/compr_data_size +Date: August 2010 +Contact: Nitin Gupta <ngupta@vflare.org> +Description: + The compr_data_size file is read-only and specifies compressed + size of data stored in this disk. So, compression ratio can be + calculated using orig_data_size and this statistic. + Unit: bytes + +What: /sys/block/zram<id>/mem_used_total +Date: August 2010 +Contact: Nitin Gupta <ngupta@vflare.org> +Description: + The mem_used_total file is read-only and specifies the amount + of memory, including allocator fragmentation and metadata + overhead, allocated for this disk. So, allocator space + efficiency can be calculated using compr_data_size and this + statistic. + Unit: bytes \ No newline at end of file -- 1.7.2.1
WARNING: multiple messages have this Message-ID (diff)
From: Nitin Gupta <ngupta@vflare.org> To: Pekka Enberg <penberg@cs.helsinki.fi>, Minchan Kim <minchan.kim@gmail.com>, Andrew Morton <akpm@linux-foundation.org>, Greg KH <greg@kroah.com> Cc: Linux Driver Project <devel@linuxdriverproject.org>, linux-mm <linux-mm@kvack.org>, linux-kernel <linux-kernel@vger.kernel.org> Subject: [PATCH 10/10] Document sysfs entries Date: Mon, 9 Aug 2010 22:56:56 +0530 [thread overview] Message-ID: <1281374816-904-11-git-send-email-ngupta@vflare.org> (raw) In-Reply-To: <1281374816-904-1-git-send-email-ngupta@vflare.org> Signed-off-by: Nitin Gupta <ngupta@vflare.org> --- Documentation/ABI/testing/sysfs-block-zram | 99 ++++++++++++++++++++++++++++ 1 files changed, 99 insertions(+), 0 deletions(-) create mode 100644 Documentation/ABI/testing/sysfs-block-zram diff --git a/Documentation/ABI/testing/sysfs-block-zram b/Documentation/ABI/testing/sysfs-block-zram new file mode 100644 index 0000000..c8b3b48 --- /dev/null +++ b/Documentation/ABI/testing/sysfs-block-zram @@ -0,0 +1,99 @@ +What: /sys/block/zram<id>/disksize +Date: August 2010 +Contact: Nitin Gupta <ngupta@vflare.org> +Description: + The disksize file is read-write and specifies the disk size + which represents the limit on the *uncompressed* worth of data + that can be stored in this disk. + +What: /sys/block/zram<id>/initstate +Date: August 2010 +Contact: Nitin Gupta <ngupta@vflare.org> +Description: + The disksize file is read-only and shows the initialization + state of the device. + +What: /sys/block/zram<id>/reset +Date: August 2010 +Contact: Nitin Gupta <ngupta@vflare.org> +Description: + The disksize file is write-only and allows resetting the + device. The reset operation frees all the memory assocaited + with this device. + +What: /sys/block/zram<id>/num_reads +Date: August 2010 +Contact: Nitin Gupta <ngupta@vflare.org> +Description: + The num_reads file is read-only and specifies the number of + reads (failed or successful) done on this device. + +What: /sys/block/zram<id>/num_writes +Date: August 2010 +Contact: Nitin Gupta <ngupta@vflare.org> +Description: + The num_writes file is read-only and specifies the number of + writes (failed or successful) done on this device. + +What: /sys/block/zram<id>/invalid_io +Date: August 2010 +Contact: Nitin Gupta <ngupta@vflare.org> +Description: + The invalid_io file is read-only and specifies the number of + non-page-size-aligned I/O requests issued to this device. + +What: /sys/block/zram<id>/notify_free +Date: August 2010 +Contact: Nitin Gupta <ngupta@vflare.org> +Description: + The notify_free file is read-only and specifies the number of + swap slot free notifications received by this device. These + notifications are send to a swap block device when a swap slot + is freed. This statistic is applicable only when this disk is + being used as a swap disk. + +What: /sys/block/zram<id>/discard +Date: August 2010 +Contact: Nitin Gupta <ngupta@vflare.org> +Description: + The discard file is read-only and specifies the number of + discard requests received by this device. These requests + provide information to block device regarding blocks which are + no longer used by filesystem. + +What: /sys/block/zram<id>/zero_pages +Date: August 2010 +Contact: Nitin Gupta <ngupta@vflare.org> +Description: + The zero_pages file is read-only and specifies number of zero + filled pages written to this disk. No memory is allocated for + such pages. + +What: /sys/block/zram<id>/orig_data_size +Date: August 2010 +Contact: Nitin Gupta <ngupta@vflare.org> +Description: + The orig_data_size file is read-only and specifies uncompressed + size of data stored in this disk. This excludes zero-filled + pages (zero_pages) since no memory is allocated for them. + Unit: bytes + +What: /sys/block/zram<id>/compr_data_size +Date: August 2010 +Contact: Nitin Gupta <ngupta@vflare.org> +Description: + The compr_data_size file is read-only and specifies compressed + size of data stored in this disk. So, compression ratio can be + calculated using orig_data_size and this statistic. + Unit: bytes + +What: /sys/block/zram<id>/mem_used_total +Date: August 2010 +Contact: Nitin Gupta <ngupta@vflare.org> +Description: + The mem_used_total file is read-only and specifies the amount + of memory, including allocator fragmentation and metadata + overhead, allocated for this disk. So, allocator space + efficiency can be calculated using compr_data_size and this + statistic. + Unit: bytes \ No newline at end of file -- 1.7.2.1 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
next prev parent reply other threads:[~2010-08-09 17:27 UTC|newest] Thread overview: 137+ messages / expand[flat|nested] mbox.gz Atom feed top 2010-08-09 17:26 [PATCH 00/10] zram: various improvements and cleanups Nitin Gupta 2010-08-09 17:26 ` Nitin Gupta 2010-08-09 17:26 ` [PATCH 01/10] Replace ioctls with sysfs interface Nitin Gupta 2010-08-09 17:26 ` Nitin Gupta 2010-08-09 18:34 ` Pekka Enberg 2010-08-09 18:34 ` Pekka Enberg 2010-08-10 3:06 ` Nitin Gupta 2010-08-10 3:06 ` Nitin Gupta 2010-08-31 23:06 ` Dave Hansen 2010-08-31 23:06 ` Dave Hansen 2010-08-09 17:26 ` [PATCH 02/10] Remove need for explicit device initialization Nitin Gupta 2010-08-09 17:26 ` Nitin Gupta 2010-08-09 18:36 ` Pekka Enberg 2010-08-09 18:36 ` Pekka Enberg 2010-08-10 3:38 ` Nitin Gupta 2010-08-10 3:38 ` Nitin Gupta 2010-08-09 17:26 ` [PATCH 03/10] Use percpu stats Nitin Gupta 2010-08-09 17:26 ` Nitin Gupta 2010-08-09 18:44 ` Pekka Enberg 2010-08-09 18:44 ` Pekka Enberg 2010-08-10 4:34 ` Andrew Morton 2010-08-10 4:34 ` Andrew Morton 2010-08-11 16:39 ` Nitin Gupta 2010-08-11 16:39 ` Nitin Gupta 2010-08-11 17:18 ` Andrew Morton 2010-08-11 17:18 ` Andrew Morton 2010-08-30 16:20 ` Christoph Lameter 2010-08-30 16:20 ` Christoph Lameter 2010-08-31 20:31 ` Nitin Gupta 2010-08-31 20:31 ` Nitin Gupta 2010-08-31 21:28 ` Eric Dumazet 2010-08-31 21:28 ` Eric Dumazet 2010-08-31 21:35 ` Christoph Lameter 2010-08-31 21:35 ` Christoph Lameter 2010-08-31 21:41 ` Eric Dumazet 2010-08-31 21:41 ` Eric Dumazet 2010-09-01 20:05 ` Christoph Lameter 2010-09-01 20:05 ` Christoph Lameter 2010-09-01 20:38 ` Eric Dumazet 2010-09-01 20:38 ` Eric Dumazet 2010-09-02 0:34 ` Christoph Lameter 2010-09-02 0:34 ` Christoph Lameter 2010-08-31 5:36 ` Anton Blanchard 2010-08-31 5:36 ` Anton Blanchard 2010-09-01 3:41 ` Anton Blanchard 2010-09-01 3:41 ` Anton Blanchard 2010-09-01 3:51 ` Anton Blanchard 2010-09-01 3:51 ` Anton Blanchard 2010-09-17 20:59 ` Andrew Morton 2010-09-17 20:59 ` Andrew Morton 2010-08-09 17:26 ` [PATCH 04/10] Use percpu buffers Nitin Gupta 2010-08-09 17:26 ` Nitin Gupta 2010-08-09 18:57 ` Pekka Enberg 2010-08-09 18:57 ` Pekka Enberg 2010-08-10 4:47 ` Nitin Gupta 2010-08-10 4:47 ` Nitin Gupta 2010-08-10 5:05 ` Pekka Enberg 2010-08-10 5:05 ` Pekka Enberg 2010-08-10 5:32 ` Nitin Gupta 2010-08-10 5:32 ` Nitin Gupta 2010-08-10 7:36 ` Pekka Enberg 2010-08-10 7:36 ` Pekka Enberg 2010-08-09 17:26 ` [PATCH 05/10] Reduce per table entry overhead by 4 bytes Nitin Gupta 2010-08-09 17:26 ` Nitin Gupta 2010-08-09 18:59 ` Pekka Enberg 2010-08-09 18:59 ` Pekka Enberg 2010-08-10 4:55 ` Nitin Gupta 2010-08-10 4:55 ` Nitin Gupta 2010-08-09 17:26 ` [PATCH 06/10] Block discard support Nitin Gupta 2010-08-09 17:26 ` Nitin Gupta 2010-08-09 19:03 ` Pekka Enberg 2010-08-09 19:03 ` Pekka Enberg 2010-08-10 2:23 ` Jens Axboe 2010-08-10 2:23 ` Jens Axboe 2010-08-10 2:23 ` Jens Axboe 2010-08-10 4:54 ` Nitin Gupta 2010-08-10 4:54 ` Nitin Gupta 2010-08-10 4:54 ` Nitin Gupta 2010-08-10 15:54 ` Jens Axboe 2010-08-10 15:54 ` Jens Axboe 2010-08-10 15:54 ` Jens Axboe 2010-08-09 17:26 ` [PATCH 07/10] Increase compressed page size threshold Nitin Gupta 2010-08-09 17:26 ` Nitin Gupta 2010-08-09 18:32 ` Pekka Enberg 2010-08-09 18:32 ` Pekka Enberg 2010-08-09 17:26 ` [PATCH 08/10] Some cleanups Nitin Gupta 2010-08-09 17:26 ` Nitin Gupta 2010-08-09 19:02 ` Pekka Enberg 2010-08-09 19:02 ` Pekka Enberg 2010-08-09 17:26 ` [PATCH 09/10] Update zram documentation Nitin Gupta 2010-08-09 17:26 ` Nitin Gupta 2010-08-09 17:26 ` Nitin Gupta [this message] 2010-08-09 17:26 ` [PATCH 10/10] Document sysfs entries Nitin Gupta 2010-08-09 19:02 ` Pekka Enberg 2010-08-09 19:02 ` Pekka Enberg 2010-08-31 22:37 ` [PATCH 00/10] zram: various improvements and cleanups Greg KH 2010-08-31 22:37 ` Greg KH 2010-09-01 3:32 ` Anton Blanchard 2010-09-01 3:32 ` Anton Blanchard 2010-09-09 17:24 ` OOM panics with zram Dave Hansen 2010-09-09 17:24 ` Dave Hansen 2010-09-09 19:07 ` [patch -rc] oom: always return a badness score of non-zero for eligible tasks David Rientjes 2010-09-09 19:07 ` David Rientjes 2010-09-09 19:48 ` Dave Hansen 2010-09-09 19:48 ` Dave Hansen 2010-09-09 21:00 ` David Rientjes 2010-09-09 21:00 ` David Rientjes 2010-09-09 21:10 ` Dave Hansen 2010-09-09 21:10 ` Dave Hansen 2010-09-09 21:40 ` David Rientjes 2010-09-09 21:40 ` David Rientjes 2010-10-03 18:41 ` OOM panics with zram Nitin Gupta 2010-10-03 18:41 ` Nitin Gupta 2010-10-03 19:27 ` Dave Hansen 2010-10-03 19:27 ` Dave Hansen 2010-10-03 19:40 ` Nitin Gupta 2010-10-03 19:40 ` Nitin Gupta 2010-10-04 11:08 ` Ed Tomlinson 2010-10-04 11:08 ` Ed Tomlinson 2010-10-05 23:43 ` Greg KH 2010-10-05 23:43 ` Greg KH 2010-10-06 2:29 ` Nitin Gupta 2010-10-06 2:29 ` Nitin Gupta 2010-10-06 2:36 ` Greg KH 2010-10-06 2:36 ` Greg KH 2010-10-06 4:30 ` Nitin Gupta 2010-10-06 4:30 ` Nitin Gupta 2010-10-06 7:38 ` Pekka Enberg 2010-10-06 7:38 ` Pekka Enberg 2010-10-06 14:03 ` Greg KH 2010-10-06 14:03 ` Greg KH 2010-10-06 14:16 ` Pekka Enberg 2010-10-06 14:16 ` Pekka Enberg 2010-10-06 14:53 ` Nitin Gupta 2010-10-06 14:53 ` Nitin Gupta 2010-10-06 14:02 ` Greg KH 2010-10-06 14:02 ` Greg KH
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