[Gluster-users] Extremely slow file listing in folders with many files
Artem Russakovskii
archon810 at gmail.com
Mon May 18 22:25:27 UTC 2020
I've launched an ls in a folder with ~100k files/dirs 20 minutes ago. It's
still not done and the log is filled with tens of thousands of these. This
makes gluster almost unusable right now.
[2020-05-18 22:23:35.919504] I [MSGID: 109063]
[dht-layout.c:659:dht_layout_normalize] 0-apkmirror_data1-dht: Found
anomalies in (null) (gfid = 5c539141-dbe5-484a-acc0-acc369d2e55b). Holes=1
overlaps=0
[2020-05-18 22:23:35.919526] I [MSGID: 109063]
[dht-layout.c:659:dht_layout_normalize] 0-apkmirror_data1-dht: Found
anomalies in (null) (gfid = 686ed221-0b5a-4412-bd70-385b707cc63e). Holes=1
overlaps=0
[2020-05-18 22:23:35.919534] I [MSGID: 109063]
[dht-layout.c:659:dht_layout_normalize] 0-apkmirror_data1-dht: Found
anomalies in (null) (gfid = 04459d23-f77d-4ad4-baf6-bb5c39dc59b6). Holes=1
overlaps=0
[2020-05-18 22:23:35.919545] I [MSGID: 109063]
[dht-layout.c:659:dht_layout_normalize] 0-apkmirror_data1-dht: Found
anomalies in (null) (gfid = e0beed96-4f2b-4e4b-8e02-963a159da4ff). Holes=1
overlaps=0
[2020-05-18 22:23:35.919552] I [MSGID: 109063]
[dht-layout.c:659:dht_layout_normalize] 0-apkmirror_data1-dht: Found
anomalies in (null) (gfid = 4393a4a8-3768-4acf-a4bd-33152f79c7b9). Holes=1
overlaps=0
[2020-05-18 22:23:35.919564] I [MSGID: 109063]
[dht-layout.c:659:dht_layout_normalize] 0-apkmirror_data1-dht: Found
anomalies in (null) (gfid = 2ec6e22b-2226-482f-9149-4ef9259f2777). Holes=1
overlaps=0
[2020-05-18 22:23:35.919571] I [MSGID: 109063]
[dht-layout.c:659:dht_layout_normalize] 0-apkmirror_data1-dht: Found
anomalies in (null) (gfid = 6047055d-59ec-405b-ab9d-69cf3112d51b). Holes=1
overlaps=0
[2020-05-18 22:23:35.919585] I [MSGID: 109063]
[dht-layout.c:659:dht_layout_normalize] 0-apkmirror_data1-dht: Found
anomalies in (null) (gfid = 6cc7de36-ddd6-4daf-b219-3d823b5020d1). Holes=1
overlaps=0
[2020-05-18 22:23:35.919592] I [MSGID: 109063]
[dht-layout.c:659:dht_layout_normalize] 0-apkmirror_data1-dht: Found
anomalies in (null) (gfid = 27dd2dfa-f8f2-48e5-b59d-a407293a89f7). Holes=1
overlaps=0
[2020-05-18 22:23:36.286582] I [MSGID: 109063]
[dht-layout.c:659:dht_layout_normalize] 0-apkmirror_data1-dht: Found
anomalies in (null) (gfid = b4b8fcde-c0d0-4d4e-ae49-c09b4a4f5360). Holes=1
overlaps=0
[2020-05-18 22:23:36.286631] I [MSGID: 109063]
[dht-layout.c:659:dht_layout_normalize] 0-apkmirror_data1-dht: Found
anomalies in (null) (gfid = 80d7664c-aa3d-4675-bea4-389f3bef9d08). Holes=1
overlaps=0
[2020-05-18 22:23:36.286641] I [MSGID: 109063]
[dht-layout.c:659:dht_layout_normalize] 0-apkmirror_data1-dht: Found
anomalies in (null) (gfid = 6b5a6b00-1c77-4c2a-b92a-000f00b03b8c). Holes=1
overlaps=0
[2020-05-18 22:23:36.286649] I [MSGID: 109063]
[dht-layout.c:659:dht_layout_normalize] 0-apkmirror_data1-dht: Found
anomalies in (null) (gfid = b6be91a5-c7ff-441f-b495-3aaa360c66aa). Holes=1
overlaps=0
[2020-05-18 22:23:36.286663] I [MSGID: 109063]
[dht-layout.c:659:dht_layout_normalize] 0-apkmirror_data1-dht: Found
anomalies in (null) (gfid = 1d22681c-f55c-4021-82ee-86f1a91caa32). Holes=1
overlaps=0
[2020-05-18 22:23:36.286671] I [MSGID: 109063]
[dht-layout.c:659:dht_layout_normalize] 0-apkmirror_data1-dht: Found
anomalies in (null) (gfid = 93d3cecf-b340-46a7-8fcb-7139d6337021). Holes=1
overlaps=0
[2020-05-18 22:23:36.286713] I [MSGID: 109063]
[dht-layout.c:659:dht_layout_normalize] 0-apkmirror_data1-dht: Found
anomalies in (null) (gfid = 93dfb66d-c60c-4708-826b-a1078a85c741). Holes=1
overlaps=0
[2020-05-18 22:23:36.286722] I [MSGID: 109063]
[dht-layout.c:659:dht_layout_normalize] 0-apkmirror_data1-dht: Found
anomalies in (null) (gfid = eea71270-342f-45e2-8da6-e3bad3d700c7). Holes=1
overlaps=0
[2020-05-18 22:23:36.286729] I [MSGID: 109063]
[dht-layout.c:659:dht_layout_normalize] 0-apkmirror_data1-dht: Found
anomalies in (null) (gfid = 848849a5-20f8-49f9-870f-e5bf928d98e8). Holes=1
overlaps=0
[2020-05-18 22:23:36.286737] I [MSGID: 109063]
[dht-layout.c:659:dht_layout_normalize] 0-apkmirror_data1-dht: Found
anomalies in (null) (gfid = 97e58dce-7d41-4c82-86e9-0e72ca02bbcd). Holes=1
overlaps=0
[2020-05-18 22:23:36.416493] I [MSGID: 109063]
[dht-layout.c:659:dht_layout_normalize] 0-apkmirror_data1-dht: Found
anomalies in (null) (gfid = 40d108b0-5f5f-4c39-a4ce-06cef1bac6bd). Holes=1
overlaps=0
[2020-05-18 22:23:36.416549] I [MSGID: 109063]
[dht-layout.c:659:dht_layout_normalize] 0-apkmirror_data1-dht: Found
anomalies in (null) (gfid = d7871c87-2954-4615-86c7-2af660614c85). Holes=1
overlaps=0
[2020-05-18 22:23:36.416560] I [MSGID: 109063]
[dht-layout.c:659:dht_layout_normalize] 0-apkmirror_data1-dht: Found
anomalies in (null) (gfid = 3923df3a-5845-4e14-8299-c9bb3e886a80). Holes=1
overlaps=0
[2020-05-18 22:23:36.416568] I [MSGID: 109063]
[dht-layout.c:659:dht_layout_normalize] 0-apkmirror_data1-dht: Found
anomalies in (null) (gfid = 6cd7dbdb-4224-4fe2-9c40-7e146140d993). Holes=1
overlaps=0
[2020-05-18 22:23:36.416578] I [MSGID: 109063]
[dht-layout.c:659:dht_layout_normalize] 0-apkmirror_data1-dht: Found
anomalies in (null) (gfid = 00fba742-5ebb-404a-8628-bfc697285389). Holes=1
overlaps=0
[2020-05-18 22:23:36.416587] I [MSGID: 109063]
[dht-layout.c:659:dht_layout_normalize] 0-apkmirror_data1-dht: Found
anomalies in (null) (gfid = d7de7b74-3065-4c63-9c2b-80f174c6c407). Holes=1
overlaps=0
[2020-05-18 22:23:36.416594] I [MSGID: 109063]
[dht-layout.c:659:dht_layout_normalize] 0-apkmirror_data1-dht: Found
anomalies in (null) (gfid = df7c960b-f867-400a-b1ea-3d2aa9205903). Holes=1
overlaps=0
[2020-05-18 22:23:36.416603] I [MSGID: 109063]
[dht-layout.c:659:dht_layout_normalize] 0-apkmirror_data1-dht: Found
anomalies in (null) (gfid = 3d52e68a-3de4-48d8-b3c3-ff9f02499b8d). Holes=1
overlaps=0
[2020-05-18 22:23:36.416618] I [MSGID: 109063]
[dht-layout.c:659:dht_layout_normalize] 0-apkmirror_data1-dht: Found
anomalies in (null) (gfid = 0ba97207-3539-419d-921a-5883bd839f8b). Holes=1
overlaps=0
[2020-05-18 22:23:36.416625] I [MSGID: 109063]
[dht-layout.c:659:dht_layout_normalize] 0-apkmirror_data1-dht: Found
anomalies in (null) (gfid = 9f569e44-6a7f-49ff-be61-4051614679e0). Holes=1
overlaps=0
[2020-05-18 22:23:36.416632] I [MSGID: 109063]
[dht-layout.c:659:dht_layout_normalize] 0-apkmirror_data1-dht: Found
anomalies in (null) (gfid = 3cb0b764-e0b7-4c80-9e6e-e5a6540378c7). Holes=1
overlaps=0
[2020-05-18 22:23:36.416641] I [MSGID: 109063]
[dht-layout.c:659:dht_layout_normalize] 0-apkmirror_data1-dht: Found
anomalies in (null) (gfid = 4d12a428-b082-4f0d-977a-2e1b21a62f9f). Holes=1
overlaps=0
[2020-05-18 22:23:36.416659] I [MSGID: 109063]
[dht-layout.c:659:dht_layout_normalize] 0-apkmirror_data1-dht: Found
anomalies in (null) (gfid = 4b58cd7c-3470-4d3d-be05-1f7a1ce3b885). Holes=1
overlaps=0
[2020-05-18 22:23:36.416667] I [MSGID: 109063]
[dht-layout.c:659:dht_layout_normalize] 0-apkmirror_data1-dht: Found
anomalies in (null) (gfid = 0b5f9eb1-ff2b-4f53-8068-be3459d24893). Holes=1
overlaps=0
[2020-05-18 22:23:36.416676] I [MSGID: 109063]
[dht-layout.c:659:dht_layout_normalize] 0-apkmirror_data1-dht: Found
anomalies in (null) (gfid = 923bf3d7-e964-4f3f-b067-60b1dc3239e2). Holes=1
overlaps=0
[2020-05-18 22:23:36.592293] I [MSGID: 109063]
[dht-layout.c:659:dht_layout_normalize] 0-apkmirror_data1-dht: Found
anomalies in (null) (gfid = da9de079-2fff-4589-86d1-1edc2ff1e088). Holes=1
overlaps=0
[2020-05-18 22:23:36.592383] I [MSGID: 109063]
[dht-layout.c:659:dht_layout_normalize] 0-apkmirror_data1-dht: Found
anomalies in (null) (gfid = c4dad7e7-feb5-4346-96ac-fb2f84c59961). Holes=1
overlaps=0
[2020-05-18 22:23:36.592394] I [MSGID: 109063]
[dht-layout.c:659:dht_layout_normalize] 0-apkmirror_data1-dht: Found
anomalies in (null) (gfid = c28fa677-cffb-42f7-bf58-809f82c5fda8). Holes=1
overlaps=0
[2020-05-18 22:23:36.592409] I [MSGID: 109063]
[dht-layout.c:659:dht_layout_normalize] 0-apkmirror_data1-dht: Found
anomalies in (null) (gfid = 44d5fc11-ec63-4589-b1a5-435cb9956807). Holes=1
overlaps=0
[2020-05-18 22:23:36.592418] I [MSGID: 109063]
[dht-layout.c:659:dht_layout_normalize] 0-apkmirror_data1-dht: Found
anomalies in (null) (gfid = 4a826ae1-2e5e-4cd1-b7aa-4045095cac88). Holes=1
overlaps=0
[2020-05-18 22:23:36.592425] I [MSGID: 109063]
[dht-layout.c:659:dht_layout_normalize] 0-apkmirror_data1-dht: Found
anomalies in (null) (gfid = a04618e8-5dc9-4c13-8885-9db27c2e9101). Holes=1
overlaps=0
[2020-05-18 22:23:36.592434] I [MSGID: 109063]
[dht-layout.c:659:dht_layout_normalize] 0-apkmirror_data1-dht: Found
anomalies in (null) (gfid = 52d3cae3-0e94-4508-9409-322230c324e4). Holes=1
overlaps=0
[2020-05-18 22:23:36.592441] I [MSGID: 109063]
[dht-layout.c:659:dht_layout_normalize] 0-apkmirror_data1-dht: Found
anomalies in (null) (gfid = 94d989de-2aa5-470c-a3da-5d169b4dd882). Holes=1
overlaps=0
[2020-05-18 22:23:36.592452] I [MSGID: 109063]
[dht-layout.c:659:dht_layout_normalize] 0-apkmirror_data1-dht: Found
anomalies in (null) (gfid = c2840cd4-a0c0-4577-8169-4c9c1c14d236). Holes=1
overlaps=0
[2020-05-18 22:23:36.592459] I [MSGID: 109063]
[dht-layout.c:659:dht_layout_normalize] 0-apkmirror_data1-dht: Found
anomalies in (null) (gfid = eef2b761-8919-425a-be50-ee23e3f2bc5d). Holes=1
overlaps=0
[2020-05-18 22:23:36.592470] I [MSGID: 109063]
[dht-layout.c:659:dht_layout_normalize] 0-apkmirror_data1-dht: Found
anomalies in (null) (gfid = 3e698fd4-fff6-4ba6-abe6-1c9e94c7f238). Holes=1
overlaps=0
[2020-05-18 22:23:36.727125] I [MSGID: 109063]
[dht-layout.c:659:dht_layout_normalize] 0-apkmirror_data1-dht: Found
anomalies in (null) (gfid = d3c978cd-55a9-4bcf-b923-cc328d19b721). Holes=1
overlaps=0
[2020-05-18 22:23:36.727178] I [MSGID: 109063]
[dht-layout.c:659:dht_layout_normalize] 0-apkmirror_data1-dht: Found
anomalies in (null) (gfid = 2a76f859-8162-4022-b721-ea1914d28f63). Holes=1
overlaps=0
[2020-05-18 22:23:36.761998] I [MSGID: 109063]
[dht-layout.c:659:dht_layout_normalize] 0-apkmirror_data1-dht: Found
anomalies in (null) (gfid = 3616ac4b-7320-4a06-8bb2-ac862a5f0f44). Holes=1
overlaps=0
[2020-05-18 22:23:36.762041] I [MSGID: 109063]
[dht-layout.c:659:dht_layout_normalize] 0-apkmirror_data1-dht: Found
anomalies in (null) (gfid = a1848805-2cdb-4f86-8677-5532ac97ca60). Holes=1
overlaps=0
[2020-05-18 22:23:36.762087] I [MSGID: 109063]
[dht-layout.c:659:dht_layout_normalize] 0-apkmirror_data1-dht: Found
anomalies in (null) (gfid = b78a7479-6868-4ffe-beca-b0e929d66aec). Holes=1
overlaps=0
[2020-05-18 22:23:36.762099] I [MSGID: 109063]
[dht-layout.c:659:dht_layout_normalize] 0-apkmirror_data1-dht: Found
anomalies in (null) (gfid = 4467d1b6-1438-4912-958e-d56ee13ce2a4). Holes=1
overlaps=0
[2020-05-18 22:23:36.762109] I [MSGID: 109063]
[dht-layout.c:659:dht_layout_normalize] 0-apkmirror_data1-dht: Found
anomalies in (null) (gfid = 34015db8-3885-42d4-97bb-8b6acf11a55d). Holes=1
overlaps=0
[2020-05-18 22:23:36.762117] I [MSGID: 109063]
[dht-layout.c:659:dht_layout_normalize] 0-apkmirror_data1-dht: Found
anomalies in (null) (gfid = 3cc59a68-6c36-40b8-a7ee-76666a3359c8). Holes=1
overlaps=0
[2020-05-18 22:23:37.157837] I [MSGID: 109063]
[dht-layout.c:659:dht_layout_normalize] 0-apkmirror_data1-dht: Found
anomalies in (null) (gfid = 1f367ff0-b483-4985-961a-508175c8583b). Holes=1
overlaps=0
[2020-05-18 22:23:37.157890] I [MSGID: 109063]
[dht-layout.c:659:dht_layout_normalize] 0-apkmirror_data1-dht: Found
anomalies in (null) (gfid = fd4d4f5f-8638-42a7-9639-d921eabbb360). Holes=1
overlaps=0
[2020-05-18 22:23:37.157935] I [MSGID: 109063]
[dht-layout.c:659:dht_layout_normalize] 0-apkmirror_data1-dht: Found
anomalies in (null) (gfid = ebf167c8-1c29-40f2-8762-6c05061fba7c). Holes=1
overlaps=0
[2020-05-18 22:23:37.157945] I [MSGID: 109063]
[dht-layout.c:659:dht_layout_normalize] 0-apkmirror_data1-dht: Found
anomalies in (null) (gfid = 7a9ae43c-896a-4c16-994e-440c0d0f0550). Holes=1
overlaps=0
[2020-05-18 22:23:37.157952] I [MSGID: 109063]
[dht-layout.c:659:dht_layout_normalize] 0-apkmirror_data1-dht: Found
anomalies in (null) (gfid = 2ebccb10-7fb5-4b0e-8633-9c3ed6f67f5f). Holes=1
overlaps=0
[2020-05-18 22:23:37.157962] I [MSGID: 109063]
[dht-layout.c:659:dht_layout_normalize] 0-apkmirror_data1-dht: Found
anomalies in (null) (gfid = 71d9ea44-0b98-416f-98a7-0229bcc08596). Holes=1
overlaps=0
[2020-05-18 22:23:37.157975] I [MSGID: 109063]
[dht-layout.c:659:dht_layout_normalize] 0-apkmirror_data1-dht: Found
anomalies in (null) (gfid = d3c0e707-51af-49cc-b09c-f2ed07aaedd6). Holes=1
overlaps=0
[2020-05-18 22:23:37.157988] I [MSGID: 109063]
[dht-layout.c:659:dht_layout_normalize] 0-apkmirror_data1-dht: Found
anomalies in (null) (gfid = 8c60366b-5d26-46d9-aee0-9ce668edabf0). Holes=1
overlaps=0
[2020-05-18 22:23:37.158008] I [MSGID: 109063]
[dht-layout.c:659:dht_layout_normalize] 0-apkmirror_data1-dht: Found
anomalies in (null) (gfid = d4a336e7-b1c0-4858-91e3-37b6c8d09b07). Holes=1
overlaps=0
[2020-05-18 22:23:37.465465] I [MSGID: 109063]
[dht-layout.c:659:dht_layout_normalize] 0-apkmirror_data1-dht: Found
anomalies in (null) (gfid = 73c6b711-976a-4f31-9e08-054e55ca6be9). Holes=1
overlaps=0
[2020-05-18 22:23:37.465525] I [MSGID: 109063]
[dht-layout.c:659:dht_layout_normalize] 0-apkmirror_data1-dht: Found
anomalies in (null) (gfid = 6f9c16eb-f0f1-4cb6-b28c-eba2224e4b80). Holes=1
overlaps=0
[2020-05-18 22:23:37.465553] I [MSGID: 109063]
[dht-layout.c:659:dht_layout_normalize] 0-apkmirror_data1-dht: Found
anomalies in (null) (gfid = 9a233480-ebfa-463f-98bc-a2e1a122e315). Holes=1
overlaps=0
[2020-05-18 22:23:37.465566] I [MSGID: 109063]
[dht-layout.c:659:dht_layout_normalize] 0-apkmirror_data1-dht: Found
anomalies in (null) (gfid = 2c33de93-7a33-4d14-b935-80d8643f7109). Holes=1
overlaps=0
[2020-05-18 22:23:37.517495] I [MSGID: 109063]
[dht-layout.c:659:dht_layout_normalize] 0-apkmirror_data1-dht: Found
anomalies in (null) (gfid = d1733ee9-91e4-44f4-b7ad-d436e6b24059). Holes=1
overlaps=0
[2020-05-18 22:23:37.517554] I [MSGID: 109063]
[dht-layout.c:659:dht_layout_normalize] 0-apkmirror_data1-dht: Found
anomalies in (null) (gfid = bf870b8f-809b-4369-9532-91c22e3a8c04). Holes=1
overlaps=0
[2020-05-18 22:23:37.517569] I [MSGID: 109063]
[dht-layout.c:659:dht_layout_normalize] 0-apkmirror_data1-dht: Found
anomalies in (null) (gfid = 769fa28d-e7a5-4387-af45-a2d1c5910997). Holes=1
overlaps=0
[2020-05-18 22:23:37.517582] I [MSGID: 109063]
[dht-layout.c:659:dht_layout_normalize] 0-apkmirror_data1-dht: Found
anomalies in (null) (gfid = 62b2aa19-b3bb-4536-b0cc-3bb54305f668). Holes=1
overlaps=0
[2020-05-18 22:23:37.517590] I [MSGID: 109063]
[dht-layout.c:659:dht_layout_normalize] 0-apkmirror_data1-dht: Found
anomalies in (null) (gfid = 942eeba7-ce64-460d-82c2-5fdbe3341a5b). Holes=1
overlaps=0
Sincerely,
Artem
--
Founder, Android Police <http://www.androidpolice.com>, APK Mirror
<http://www.apkmirror.com/>, Illogical Robot LLC
beerpla.net | @ArtemR <http://twitter.com/ArtemR>
On Mon, May 18, 2020 at 3:10 PM Artem Russakovskii <archon810 at gmail.com>
wrote:
> Hi,
>
> Does the gluster team have any feedback about this? Resolving the "Found
> anomalies" issues may be key to resolving dir list speed issues.
>
> Sincerely,
> Artem
>
> --
> Founder, Android Police <http://www.androidpolice.com>, APK Mirror
> <http://www.apkmirror.com/>, Illogical Robot LLC
> beerpla.net | @ArtemR <http://twitter.com/ArtemR>
>
>
> On Thu, Apr 30, 2020 at 10:36 PM Strahil Nikolov <hunter86_bg at yahoo.com>
> wrote:
>
>> On April 30, 2020 9:05:19 PM GMT+03:00, Artem Russakovskii <
>> archon810 at gmail.com> wrote:
>> >I did this on the same prod instance just now.
>> >
>> >'find' on a fuse gluster dir with 40k+ files:
>> >1st run: 3m56.261s
>> >2nd run: 0m24.970s
>> >3rd run: 0m24.099s
>> >
>> >At this point, I killed all gluster services on one of the 4 servers
>> >and
>> >verified that that brick went offline.
>> >
>> >1st run: 0m38.131s
>> >2nd run: 0m19.369s
>> >3rd run: 0m23.576s
>> >
>> >Nothing conclusive really IMO.
>> >
>> >Sincerely,
>> >Artem
>> >
>> >--
>> >Founder, Android Police <http://www.androidpolice.com>, APK Mirror
>> ><http://www.apkmirror.com/>, Illogical Robot LLC
>> >beerpla.net | @ArtemR <http://twitter.com/ArtemR>
>> >
>> >
>> >On Thu, Apr 30, 2020 at 9:55 AM Strahil Nikolov <hunter86_bg at yahoo.com>
>> >wrote:
>> >
>> >> On April 30, 2020 6:27:10 PM GMT+03:00, Artem Russakovskii <
>> >> archon810 at gmail.com> wrote:
>> >> >Hi Strahil, in the original email I included both the times for the
>> >> >first
>> >> >and subsequent reads on the fuse mounted gluster volume as well as
>> >the
>> >> >xfs
>> >> >filesystem the gluster data resides on (this is the brick, right?).
>> >> >
>> >> >On Thu, Apr 30, 2020, 7:44 AM Strahil Nikolov
>> ><hunter86_bg at yahoo.com>
>> >> >wrote:
>> >> >
>> >> >> On April 30, 2020 4:24:23 AM GMT+03:00, Artem Russakovskii <
>> >> >> archon810 at gmail.com> wrote:
>> >> >> >Hi all,
>> >> >> >
>> >> >> >We have 500GB and 10TB 4x1 replicate xfs-based gluster volumes,
>> >and
>> >> >the
>> >> >> >10TB one especially is extremely slow to do certain things with
>> >(and
>> >> >> >has
>> >> >> >been since gluster 3.x when we started). We're currently on 5.13.
>> >> >> >
>> >> >> >The number of files isn't even what I'd consider that great -
>> >under
>> >> >> >100k
>> >> >> >per dir.
>> >> >> >
>> >> >> >Here are some numbers to look at:
>> >> >> >
>> >> >> >On gluster volume in a dir of 45k files:
>> >> >> >The first time
>> >> >> >
>> >> >> >time find | wc -l
>> >> >> >45423
>> >> >> >real 8m44.819s
>> >> >> >user 0m0.459s
>> >> >> >sys 0m0.998s
>> >> >> >
>> >> >> >And again
>> >> >> >
>> >> >> >time find | wc -l
>> >> >> >45423
>> >> >> >real 0m34.677s
>> >> >> >user 0m0.291s
>> >> >> >sys 0m0.754s
>> >> >> >
>> >> >> >
>> >> >> >If I run the same operation on the xfs block device itself:
>> >> >> >The first time
>> >> >> >
>> >> >> >time find | wc -l
>> >> >> >45423
>> >> >> >real 0m13.514s
>> >> >> >user 0m0.144s
>> >> >> >sys 0m0.501s
>> >> >> >
>> >> >> >And again
>> >> >> >
>> >> >> >time find | wc -l
>> >> >> >45423
>> >> >> >real 0m0.197s
>> >> >> >user 0m0.088s
>> >> >> >sys 0m0.106s
>> >> >> >
>> >> >> >
>> >> >> >I'd expect a performance difference here but just as it was
>> >several
>> >> >> >years
>> >> >> >ago when we started with gluster, it's still huge, and simple
>> >file
>> >> >> >listings
>> >> >> >are incredibly slow.
>> >> >> >
>> >> >> >At the time, the team was looking to do some optimizations, but
>> >I'm
>> >> >not
>> >> >> >sure this has happened.
>> >> >> >
>> >> >> >What can we do to try to improve performance?
>> >> >> >
>> >> >> >Thank you.
>> >> >> >
>> >> >> >
>> >> >> >
>> >> >> >Some setup values follow.
>> >> >> >
>> >> >> >xfs_info /mnt/SNIP_block1
>> >> >> >meta-data=/dev/sdc isize=512 agcount=103,
>> >> >> >agsize=26214400
>> >> >> >blks
>> >> >> > = sectsz=512 attr=2,
>> >projid32bit=1
>> >> >> > = crc=1 finobt=1, sparse=0,
>> >> >rmapbt=0
>> >> >> > = reflink=0
>> >> >> >data = bsize=4096 blocks=2684354560,
>> >> >> >imaxpct=25
>> >> >> > = sunit=0 swidth=0 blks
>> >> >> >naming =version 2 bsize=4096 ascii-ci=0, ftype=1
>> >> >> >log =internal log bsize=4096 blocks=51200,
>> >> >version=2
>> >> >> > = sectsz=512 sunit=0 blks,
>> >> >lazy-count=1
>> >> >> >realtime =none extsz=4096 blocks=0,
>> >rtextents=0
>> >> >> >
>> >> >> >Volume Name: SNIP_data1
>> >> >> >Type: Replicate
>> >> >> >Volume ID: SNIP
>> >> >> >Status: Started
>> >> >> >Snapshot Count: 0
>> >> >> >Number of Bricks: 1 x 4 = 4
>> >> >> >Transport-type: tcp
>> >> >> >Bricks:
>> >> >> >Brick1: nexus2:/mnt/SNIP_block1/SNIP_data1
>> >> >> >Brick2: forge:/mnt/SNIP_block1/SNIP_data1
>> >> >> >Brick3: hive:/mnt/SNIP_block1/SNIP_data1
>> >> >> >Brick4: citadel:/mnt/SNIP_block1/SNIP_data1
>> >> >> >Options Reconfigured:
>> >> >> >cluster.quorum-count: 1
>> >> >> >cluster.quorum-type: fixed
>> >> >> >network.ping-timeout: 5
>> >> >> >network.remote-dio: enable
>> >> >> >performance.rda-cache-limit: 256MB
>> >> >> >performance.readdir-ahead: on
>> >> >> >performance.parallel-readdir: on
>> >> >> >network.inode-lru-limit: 500000
>> >> >> >performance.md-cache-timeout: 600
>> >> >> >performance.cache-invalidation: on
>> >> >> >performance.stat-prefetch: on
>> >> >> >features.cache-invalidation-timeout: 600
>> >> >> >features.cache-invalidation: on
>> >> >> >cluster.readdir-optimize: on
>> >> >> >performance.io-thread-count: 32
>> >> >> >server.event-threads: 4
>> >> >> >client.event-threads: 4
>> >> >> >performance.read-ahead: off
>> >> >> >cluster.lookup-optimize: on
>> >> >> >performance.cache-size: 1GB
>> >> >> >cluster.self-heal-daemon: enable
>> >> >> >transport.address-family: inet
>> >> >> >nfs.disable: on
>> >> >> >performance.client-io-threads: on
>> >> >> >cluster.granular-entry-heal: enable
>> >> >> >cluster.data-self-heal-algorithm: full
>> >> >> >
>> >> >> >Sincerely,
>> >> >> >Artem
>> >> >> >
>> >> >> >--
>> >> >> >Founder, Android Police <http://www.androidpolice.com>, APK
>> >Mirror
>> >> >> ><http://www.apkmirror.com/>, Illogical Robot LLC
>> >> >> >beerpla.net | @ArtemR <http://twitter.com/ArtemR>
>> >> >>
>> >> >> Hi Artem,
>> >> >>
>> >> >> Have you checked the same on brick level ? How big is the
>> >difference
>> >> >?
>> >> >>
>> >> >> Best Regards,
>> >> >> Strahil Nikolov
>> >> >>
>> >>
>> >> Hi Artem,
>> >>
>> >> My bad I missed the 'xfs' word... Still the difference is huge.
>> >>
>> >> May I ask you to do a test again (pure curiosity) as follows:
>> >> 1. Repeat the test from before
>> >> 2. Stop 1 brick and test again.
>> >>
>> >>
>> >> P.S.: You can try it on the test cluster
>> >>
>> >> Best Regards,
>> >> Strahil Nikolov
>> >>
>>
>> Hi Artem,
>>
>> I was wondering if the 4th replica is adding additional overhead
>> (another dir to check), but the test is not very conclusive.
>>
>>
>> Actually the 'anomalities' log entries in your pool could be a symptom
>> of another pdoblem (just like the long listing time).
>>
>> I will try to reproduce your setup (smaller scale - 1 brick 50k files)
>> and then will try with 3 bricks.
>>
>>
>> Best Regards,
>> Strahil Nikolov
>>
>
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