discard Issue discard/TRIM commands when a segment is cleaned. no_heap Disable heap-style segment allocation which finds free segments for data from the beginning of main area, while for node from the end of main area. nouser_xattr Disable Extended User Attributes. Note: xattr is enabled by ...
int type; /* type of discard */ unsigned int min_interval; /* used for candidates exist */ @@ -406,6 +412,7 @@ struct discard_cmd_control { unsigned int discard_urgent_util; /* utilization which issue discard proactively */ unsigned int discard_granularity; /* discard granularity */...
@@ -3106,7 +3104,7 @@ static unsigned int __issue_discard_cmd_range(struct f2fs_sb_info *sbi, blk_finish_plug(&plug); mutex_unlock(&dcc->cmd_lock); trimmed+=__wait_all_discard_cmd(sbi,NULL); congestion_wait(BLK_RW_ASYNC,DEFAULT_IO_TIMEOUT); ...
在某些情况下,直接运行可能会遇到段错误,因此运行负载之前,需要通过下面的命令关闭进程地址空间随机化ASLR,参考Filebench Issue#110。ASLR是一种安全机制,可以防止攻击者通过缓冲区溢出等方式来执行恶意代码,这个原因可能与Filebench内部实现中间接调用初始化函数时发生的地址偏移问题有关。 echo 0 | sudo tee /proc/sys...
(sbi)->fcc_info->issue_list); } if (SM_I(sbi)->dcc_info) { si->nr_discarded = atomic_read(&SM_I(sbi)->dcc_info->issued_discard); si->nr_discarding = atomic_read(&SM_I(sbi)->dcc_info->queued_discard); si->nr_discard_cmd = atomic_read(&SM_I(sbi)->dcc_info->discard...
Info: This device doesn't support BLKSECDISCARDInfo: Discarded 32766 MBInfo: Overprovision ratio = 0.810%Info: Overprovision segments = 132 (GC reserved = 130)Info: format successful Most other file system mkfs utilities
Controls the issue rate of segment discard commands. What: /sys/fs/f2fs/<disk>/ipu_policy Date: November 2013 Contact: "Jaegeuk Kim" <jaegeuk.kim@samsung.com> Description: Controls the in-place-update policy. What: /sys/fs/f2fs/<disk>/min_ipu_util Date: November 2013 Contact: "Jaeg...
Finally, RocksDB triggers ftruncate to discard space that is not used. Meanwhile, the F2FS file system handles the system calls issued from the RocksDB and allocates the location of the last block twice. (1) The first location of the last block is set by fdatasync with the contiguous ...