Hi I'm evaluation using cachefiles in a production environment. Is this considered a nono? I tried benching it quickly but ran into the below when mounting an NFS share through localhost. Below I have 100 processes reading 100 different files with dd. Kind regards, Fredrik Widlund Nov 2 14:37:49 nas kernel: INFO: task dd:1927 blocked for more than 120 seconds. Nov 2 14:37:49 nas kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. Nov 2 14:37:49 nas kernel: dd D 0000000000000000 0 1927 1 0x00000004 Nov 2 14:37:49 nas kernel: ffff88012ee79a80 0000000000000082 ffff88012ee79a80 000000001dde118e Nov 2 14:37:49 nas kernel: 00000000000138c0 ffff88012f84cf80 ffff88012ee79d20 00000000000138c0 Nov 2 14:37:49 nas kernel: 000000000000e168 ffff88012ee79d20 ffff88012ee79a80 0000000000011280 Nov 2 14:37:49 nas kernel: Call Trace: Nov 2 14:37:49 nas kernel: [<ffffffffa041adb5>] ? __fscache_wait_on_page_write+0x75/0xc0 [fscache] Nov 2 14:37:49 nas kernel: [<ffffffff8107a130>] ? autoremove_wake_function+0x0/0x60 Nov 2 14:37:49 nas kernel: [<ffffffffa0477b7f>] ? nfs_fscache_release_page+0x6f/0x160 [nfs] Nov 2 14:37:49 nas kernel: [<ffffffff810ee0d2>] ? shrink_page_list+0x512/0x850 Nov 2 14:37:49 nas kernel: [<ffffffff811cb90a>] ? generic_make_request+0x1fa/0x500 Nov 2 14:37:49 nas kernel: [<ffffffff810ec8ce>] ? isolate_pages_global+0xce/0x240 Nov 2 14:37:49 nas kernel: [<ffffffff811cbcc5>] ? submit_bio+0xb5/0x170 Nov 2 14:37:49 nas kernel: [<ffffffff810ee726>] ? shrink_list+0x316/0x710 Nov 2 14:37:49 nas kernel: [<ffffffff810eed9d>] ? shrink_zone+0x27d/0x3a0 Nov 2 14:37:49 nas kernel: [<ffffffff810efe61>] ? try_to_free_pages+0x271/0x410 Nov 2 14:37:49 nas kernel: [<ffffffff810ec800>] ? isolate_pages_global+0x0/0x240 Nov 2 14:37:49 nas kernel: [<ffffffff810e7359>] ? __alloc_pages_nodemask+0x429/0x640 Nov 2 14:37:49 nas kernel: [<ffffffff8138545c>] ? io_schedule+0x8c/0xd0 Nov 2 14:37:49 nas kernel: [<ffffffff810ea213>] ? __do_page_cache_readahead+0x123/0x2b0 Nov 2 14:37:49 nas kernel: [<ffffffff810ea3cc>] ? ra_submit+0x2c/0x50 Nov 2 14:37:49 nas kernel: [<ffffffff810e23e9>] ? generic_file_aio_read+0x369/0x640 Nov 2 14:37:49 nas kernel: [<ffffffff8111f502>] ? do_sync_read+0xf2/0x150 Nov 2 14:37:49 nas kernel: [<ffffffff8107a130>] ? autoremove_wake_function+0x0/0x60 Nov 2 14:37:49 nas kernel: [<ffffffff81120541>] ? vfs_read+0xe1/0x1d0 Nov 2 14:37:49 nas kernel: [<ffffffff8112074e>] ? sys_read+0x5e/0xb0 Nov 2 14:37:49 nas kernel: [<ffffffff8100c382>] ? system_call_fastpath+0x16/0x1b -- Linux-cachefs mailing list Linux-cachefs@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cachefs
